Technology has develop into an integral a part of education inside the recent instances. Together with the advent of digital microscopes working on distinct varieties of laboratory experiments has turn into simpler than ever before. finest digital microscope had been earlier utilized only by scientists for investigation purposes. Even so, this engineering has successfully been implemented inside the education method too. Just before such technologies is usually introduced for the students, it is actually crucial that teachers also are aware of the advantages of utilizing digital microscopes. This would assure smooth flow of instruction enabling the teachers to move on from concept to actual application.
For instance, explaining cell multiplication or plant growth is of no use if students are not capable of visualize it. Even if the teacher draws a diagram to explain the idea inside a better manner, actually viewing a phenomenon has a a lot additional lasting effect. Students are very keen on figuring out new tips and aspects of a subject. Having said that, lectures will need not be lengthy and boring rhetoric of technical words. With instruments such as the digital microscope understanding has come to be additional interactive, where students can right away view the idea being taught. For example, even though teaching structures of rock or sand, the teacher can right away show the structures by displaying the image on the computer system monitor or by connecting by means of the projector. This enables the complete class to actually view what exactly is becoming taught, therefore enhancing the capability to comprehend the topic in total.
To insure the metallurgical microscope is as useful as you possibly can for classroom implementation, numerous factors really should be thought of:
Magnification: Level and flexibility of magnification is vital. The magnification ranging from 10x to 200x offers a clear view in the object becoming studied, be it a rock sample or structure of a cell.
Resolution: Resolution is a further significant aspect. When the photos might be viewed on a large computer system monitor or by means of a data projector, higher resolution is essential so the image good quality doesn't distract students. A resolution of 1280x1024 is recommended.
Flexibility: A digital microscope need to be tough and flexible. The hand held digital microscope is particularly valuable simply because it could be moved for the specimen rather than the specimen getting moved to it. It makes it possible for students to explore soil and rock specimens in an investigative manner. Additionally, it permits students to press the scope against their arm or hand to view sweat seeping via the pores. This will not very easily (if at all) be observed using a traditional microscope.
Price: Price effectiveness is critical in education. A high quality hand held digital microscope is usually obtained for below $200.
Software: Software package developed for education use is also a will have to. The software package must allow students to zoom in to determine higher detail, should let students to take time-lapse videos as well as nevertheless pictures and regular movies, and must let students to measure specimens. Captured pictures can then be printed and attached using the lab report or be used within a PowerPoint presentation.
Students are far more receptive to theory when it's taught alongside actual application. As an illustration, students could not be capable of definitely visualize the life cycle of an insect, just because they have by no means observed it in real. Some digital microscopes are packaged as part of an educational kit to create implementation much simpler. The SmartScope might be packaged using a Life Cycle specimen kit displaying the life cycle of a moth in four stages, eggs, caterpillar, pupae and moth. This can be a pretty good way of generating the students realize the basic stage, where the teacher can clarify how these are similar or unique from other insects.
The digital microscope has truly empowered teachers and students alike. Teachers are now doubly equipped to explain diverse ideas even though effortlessly relating it to the true planet. The implementation of such technologies at the school level, has offered education a a lot more analysis based tactic than only being instructional.Professional Service
Tuesday, January 22, 2013
Sunday, January 13, 2013
A Background of Photography - 1888-Present
The art of photography has undoubtedly come a lengthy way. The initial "camera" was basically nothing at all greater than a projector-and it displayed factors upside down at that. Nonetheless, just after several technological leaps throughout the 19th century, including daguerreotypes and ferrotypes, the first relatively modern camera was introduced in 1888. Due to the fact then, cameras have grown to be virtually omnipresent, and we get pleasure from taking and displaying our photographs as art all through our properties.
How has camera technologies come so far in such a brief time? Obviously, a single can argue that technology itself has quickly grown and expanded. Even so, in 1888, the predecessor to our contemporary Nikons and Canons was a Kodak camera that needed a twenty-foot roll of paper so as to take photographs. Also, these cameras took circular images instead of our rectangular ones now.
After 1888, quite a few breakthroughs occurred in improving photography. Initially, in 1889, Kodak came out with film for their cameras in lieu of paper. This genuinely allowed for mass-produced cameras that had been extra usable. A year later, Kodak developed its Brownie box roll-film camera. Since the Brownie was a inexpensive, cardboard-body camera, it created picture-taking uncomplicated for everyone, not just the elite. Just after taking sufficient photos to fill a roll of film, a person would send within the camera using the film to become created.
At initial, all photographs had been in black and white, or some shades of gray. Of course, numerous people today chose to acquire their photographs tinted just after they had been taken, but this was not usually an accurate representation of the colors present when the image was essentially produced. Therefore, in 1907, the Lumiere brothers developed industrial color film, called Autochrome plates.
Of program, with all the advent of portable, more affordable cameras and improved film came the rise in photojournalism and taking photographs of diverse cultures. This documentation also extended towards the government hiring Lewis Hine to photograph kid labor mills in 1909. Maybe cameras and film opened up the door for politicians to view how harsh some lives basically had been, and they had been in a position to regulate child labor as well as other harmful practices.
In 1914, Oscar Barnack, underneath the use of German types of?microscopes company Leitz, created the initial modern-frame camera. He created a 24x36mm frame and 35mm film film. This camera was perfected until 1924, when Leitz marketed the device beneath the name Leica. This Leica was a very superior quality 35mm camera, and it was a far cry in the prior Brownies.
The mid 1900s led to a number of new practices in photography. In 1931, a man at MIT created strobe photography. In 1936 came Kodachrome, which was the first multi-layered color film. Also in the course of this time period came producers for example Nikon, Fuji, and Zeiss. In 1963, Polaroid made cameras out there with instant color film.
In the late 20th century, such items arrived as autofocus (Minolta in 1985), Photoshop (Adobe in 1990), and in 1991, the initial digital camera, from Kodak. Of course, you probably know the story from there. Now, we can put our photos on internet albums just like Snapfish and Facebook. We can take photos and put them straight into our computers. Digital cameras, which had been $6,000 for 2.74 megapixels in 1999, can now be found for $200-and at least 10 megapixels.
With the ease we now have in participating in photography, we should take advantage on the other benefits we have from modern technologies, just like turning our pictures into canvas works of art. For much more information, please feel free to visit our webiste www.microscopebiz.com.
Monday, January 7, 2013
Various Types of Microscopes
A microscope is an instrument made use of for seeing smaller objects that are as well tiny to see together with the naked eyes. The most common microscope we see may be the light microscope. We are able to see this variety nearly anywhere exactly where there's a laboratory. There are two kinds of this sort, the single lens or extra commonly referred to as the optical lens and the compound. The single lens uses a program of lenses to magnify objects and makes use of light. Compound microscope makes use of multiple lenses to collect light from the specimen as well as a diverse set of lens to direct light for the eye piece or camera. These two would be the most typical variety. The optical microscope may be the oldest design of all. There are actually also other kinds of microscopes.
An electron microscope magnifies an object electronically. It does by using a beam of electrons to light the object and concentrate it to kind an image. It features a higher magnifying energy than the optical 1 and may magnify objects up to two million occasions. It can be made use of in observing biological and inorganic specimens which includes microorganisms and metals. When used in industry, it can be used for quality control and analysis of semiconductors.
A scanning probe microscope?supplies and image by scanning the surface of your specimen making use of a scanning probe. The probe scans the specimen in a rectangular manner after which records the image. This sort can see and magnify objects as much as the atomic level. It can do this on account of its use of the piezoelectric actuators.
fluorescence microscope is used in life sciences. Within this type, the excitatory light is passed from above by way of the objective lens 1st then towards the object as an alternative to from the object initial. The specimen is first applied with fluorescent plus the emitted is then focused for the objective lens.
A microscope is an instrument utilized for seeing compact objects which are too compact to find out with all the naked eyes. low cost digital microscope we see will be the light microscope. We are able to see this form virtually anyplace exactly where there is a laboratory.
A Dissecting Microscope For School Use
Anyone who has taken higher school biology has encountered a dissecting microscope; it was normally accompanied by a frog. The trauma involved in obtaining to chloroform destroy a frog inside the name of education might, however, have rendered you oblivious towards the workings from the dissecting microscope, so right here is actually a refresher program on how it was constructed and how it worked.
Construction Of A Dissecting Microscope
The dissecting microscope, like all Biological Microscope , has a tube having a lens at its upper opening, by way of which you appear to view the specimen lying beneath the tube's decrease end. The upper end of the tube will even have some kind of nose piece to assist your head stay steady while you do your viewing.
The decrease finish of the dissecting microscope contains the second lens, identified as the "objective" lens. The kind of goal lens being applied will rely on how fine a concentrate you should examine your specimen. Your dissecting microscope will have two much more light-condensing lenses in its condenser; these lenses are responsible for the microscope's magnification capacity.
The dissecting microscope's condenser is centered above the middle of the microscope's stage, on which the slide bearing the specimen ifs placed for examination. The ideal dissecting microscopes have adjustable stages which may be manipulated devoid of the microscope's user obtaining to eliminate their eyes from the eyepiece.
The finest?digital microscope is positioned above its diaphragm, the function of that is to control the quantity of light being transmitted by means of the slide and specimen. The light itself can also be below the dissecting microscope's stage, and is either a halogen or fluorescent bulb. It can be the manipulation of the light's reflection on the specimen that causes the dissecting microscope to magnify what the user sees.
Caring To get a Dissecting Microscope
Dissecting microscopes, like all other individuals, call for specific care; their lenses ought to be kept dust and smudge free of charge with dry, soft cloths and they must be stored, when not in use, in dust covers. They ought to also be stored away from dampness.
Those handling a dissecting microscope should really generally carry it in each hands. That is certainly the simplest way to prevent either dropping it or bumping it against other objects; either of that will ruin the alignment of your lenses. The dissecting microscope is most safe when its user holds the microscope arm in one particular hand and supports its base inside the other.
For additional information, please feel no cost to go to our webiste www.microscopebiz.com.
Construction Of A Dissecting Microscope
The dissecting microscope, like all Biological Microscope , has a tube having a lens at its upper opening, by way of which you appear to view the specimen lying beneath the tube's decrease end. The upper end of the tube will even have some kind of nose piece to assist your head stay steady while you do your viewing.
The decrease finish of the dissecting microscope contains the second lens, identified as the "objective" lens. The kind of goal lens being applied will rely on how fine a concentrate you should examine your specimen. Your dissecting microscope will have two much more light-condensing lenses in its condenser; these lenses are responsible for the microscope's magnification capacity.
The dissecting microscope's condenser is centered above the middle of the microscope's stage, on which the slide bearing the specimen ifs placed for examination. The ideal dissecting microscopes have adjustable stages which may be manipulated devoid of the microscope's user obtaining to eliminate their eyes from the eyepiece.
The finest?digital microscope is positioned above its diaphragm, the function of that is to control the quantity of light being transmitted by means of the slide and specimen. The light itself can also be below the dissecting microscope's stage, and is either a halogen or fluorescent bulb. It can be the manipulation of the light's reflection on the specimen that causes the dissecting microscope to magnify what the user sees.
Caring To get a Dissecting Microscope
Dissecting microscopes, like all other individuals, call for specific care; their lenses ought to be kept dust and smudge free of charge with dry, soft cloths and they must be stored, when not in use, in dust covers. They ought to also be stored away from dampness.
Those handling a dissecting microscope should really generally carry it in each hands. That is certainly the simplest way to prevent either dropping it or bumping it against other objects; either of that will ruin the alignment of your lenses. The dissecting microscope is most safe when its user holds the microscope arm in one particular hand and supports its base inside the other.
For additional information, please feel no cost to go to our webiste www.microscopebiz.com.
Sunday, December 9, 2012
Different Kinds of Laboratory Equipment
Laboratory equipment refers towards the wide range of tools and devices which have been applied by the scientists even though working inside a laboratory. These gear are mostly utilized for carrying out scientific experiments, taking measurements and gathering data. A more sophisticated lab gear is identified as scientific instrument.
Some from the normally used laboratory equipment are:
Bunsen burners: A Bunsen burner can be a broadly applied lab equipment that's named after Robert Bunsen. The burner generates a single open gas flame. It's primarily used for the goal of heating, sterilization and combustion. The device makes use of a liquefied petroleum gas, just like butane, propane or possibly a mixture of both or a flammable gas, just like normal gas (methane). The hose barb of a Bunsen burner is connected to a gas nozzle using a rubber tubing. The gas nozzle is kept on the laboratory bench. Laboratory benches usually are equipped with various gas nozzles, that are connected to a central gas supply, steam nozzles and vacuum nitrogen. The common methods for lighting the Bunsen burner are by utilizing a spark lighter or maybe a match stick.
polarized microscope : This laboratory equipment is mainly applied to see objects, which are also small and can't be seen with naked eyes. The science of studying little objects with aid of a microscope is known as microscopy. You will find several different microscopes offered inside the industry. Microscopes is usually classified into many classes. The classification is usually done determined by what results in the image generation, such light, electrons or possibly a probe. However, one of the most normally employed microscope is the types of?microscopes . It pictures the sample with the enable of light. Other microscopes which can be applied to carry out scientific experiments are electron microscopes and scanning probe microscope.
Operant conditioning chambers: The operant conditioning chamber is also named a Skinner box. This equipment was created by B.F. Skinner though he was studying at Harvard University. This type of laboratory equipment is primarily utilized for studying and analyzing the behavior on the animals. The device is used to study each classical conditioning and operant conditioning.
Laboratory glassware: It refers to a variety of laboratory equipment that are manufactured from glass, just like beakers, reagent bottles, funnels, conical flasks and burettes. These glass equipment are primarily applied in biology and chemistry laboratories. Some of these equipment may also be manufactured from plastic resulting from cost, comfort and ruggedness factors. Nonetheless, glass is still preferred more than plastic because it's reasonably extra inert, heat-resistant and transparent. Also, it's less complicated to customize. The laboratory glassware are mainly created of Pyrex or Borosilicate glasses. This type of glass is less prone to thermal anxiety.For a lot more facts, please feel free of charge to go to our webiste www.microscopebiz.com.
Some from the normally used laboratory equipment are:
Bunsen burners: A Bunsen burner can be a broadly applied lab equipment that's named after Robert Bunsen. The burner generates a single open gas flame. It's primarily used for the goal of heating, sterilization and combustion. The device makes use of a liquefied petroleum gas, just like butane, propane or possibly a mixture of both or a flammable gas, just like normal gas (methane). The hose barb of a Bunsen burner is connected to a gas nozzle using a rubber tubing. The gas nozzle is kept on the laboratory bench. Laboratory benches usually are equipped with various gas nozzles, that are connected to a central gas supply, steam nozzles and vacuum nitrogen. The common methods for lighting the Bunsen burner are by utilizing a spark lighter or maybe a match stick.
polarized microscope : This laboratory equipment is mainly applied to see objects, which are also small and can't be seen with naked eyes. The science of studying little objects with aid of a microscope is known as microscopy. You will find several different microscopes offered inside the industry. Microscopes is usually classified into many classes. The classification is usually done determined by what results in the image generation, such light, electrons or possibly a probe. However, one of the most normally employed microscope is the types of?microscopes . It pictures the sample with the enable of light. Other microscopes which can be applied to carry out scientific experiments are electron microscopes and scanning probe microscope.
Operant conditioning chambers: The operant conditioning chamber is also named a Skinner box. This equipment was created by B.F. Skinner though he was studying at Harvard University. This type of laboratory equipment is primarily utilized for studying and analyzing the behavior on the animals. The device is used to study each classical conditioning and operant conditioning.
Laboratory glassware: It refers to a variety of laboratory equipment that are manufactured from glass, just like beakers, reagent bottles, funnels, conical flasks and burettes. These glass equipment are primarily applied in biology and chemistry laboratories. Some of these equipment may also be manufactured from plastic resulting from cost, comfort and ruggedness factors. Nonetheless, glass is still preferred more than plastic because it's reasonably extra inert, heat-resistant and transparent. Also, it's less complicated to customize. The laboratory glassware are mainly created of Pyrex or Borosilicate glasses. This type of glass is less prone to thermal anxiety.For a lot more facts, please feel free of charge to go to our webiste www.microscopebiz.com.
4 Vital Factors in Obtaining Digital Cameras For Microscopes
A digital microscopes
camera is really a necessity for those who want or must be involved with micro photography. For example, some hobbyists take pleasure in capturing photos of microscopic objects. Others could possibly need to do so mainly because they're students inside a biology or chemistry class. Still others could possibly be professional scientists who take pictures from the specimens they study. But regardless, just before you acquire your camera, you are going to really need to think about 4 critical factors.
POINT #1: A definition. You'll want to realize that micro photography refers to the hobby or science of taking photographs using the assistance of a microscope. Consequently, we're talking about pictures with the tiniest of specimens. Clearly then, the two primary points you are going to should do that really are a microscope and the camera which attaches towards the scope. For by far the most aspect, digital cameras for microscopes resemble any other digital cameras. However, they normally have some sort of digital camera microscope adapter along with a greatest?digital microscope camera eyepiece.
POINT #2: Your spending budget. There's a wide variety of rates within this field, so you'll need to decide what your price range will allow. When top quality is of best importance, you don't desire to go broke getting your microscope and / or camera.
POINT #3: The individual / persons using the microscope / camera. No matter if this may be kids and / or students working with it or additional expert scientists matters a great deal. The good quality, along with costs, varies substantially. The more affordable setups are these which are totally integrated. That may be, the camera is in fact portion of the microscope, collectively with its many optic parts. These units are transportable, sturdy and very affordable. Nevertheless, additionally they generally have low magnification levels. Their typical use is for students inside the classroom or for youngsters as type of a entertaining hobby.
For the older hobbyist or much more professional mind, there's the self-contained microscope camera. This can be a microscope with digital camera which sits atop the all-purpose microscope. This can be not that high priced, but has more flexibility with all the camera zoom. At the high end is the digital camera which is separate however, thanks to a particular adapter, attaches to a separate microscope. The specialist will generally use this configuration, simply because it gives the optimum zooming capability and lets you use particular viewing possibilities.
POINT #4: The particular accessories you are going to need to have. You'll find separate accessories which might be typically necessary to connect your camera to your microscope--and ultimately for your camera or monitor for viewing the images. 1 accessory is usually a specific stand which holds your camera and holds the specimen that you happen to be studying. Other conditions will possess the camera mounted to the microscope, either by putting an eyepiece on the camera or through a camera adapter.
Then, when you have taken images in the specimen, these photos must be viewed someplace. At times this may be on a video or laptop or computer monitor. This signifies you will have to have the cable to connect the camera towards the monitor and possibly a video system to record the pictures. Extra generally, though, you will connect your camera to a computer via an USB port and cable. In the event you intend to complete this, ensure that, prior to you acquire your digital microscope camera, that you have a spare USB port.
If you use a stand-alone digital camera / adapter setup, you could ought to settle for viewing the image on the camera's LCD screen though you capture the full-resolution image onto your memory card. Provided that you clearly understand these 4 points, you are going to be capable of be certain you select the ideal digital microscope camera for the purposes.
For much more information, please feel cost-free to stop by our webiste www.microscopebiz.com.
POINT #1: A definition. You'll want to realize that micro photography refers to the hobby or science of taking photographs using the assistance of a microscope. Consequently, we're talking about pictures with the tiniest of specimens. Clearly then, the two primary points you are going to should do that really are a microscope and the camera which attaches towards the scope. For by far the most aspect, digital cameras for microscopes resemble any other digital cameras. However, they normally have some sort of digital camera microscope adapter along with a greatest?digital microscope camera eyepiece.
POINT #2: Your spending budget. There's a wide variety of rates within this field, so you'll need to decide what your price range will allow. When top quality is of best importance, you don't desire to go broke getting your microscope and / or camera.
POINT #3: The individual / persons using the microscope / camera. No matter if this may be kids and / or students working with it or additional expert scientists matters a great deal. The good quality, along with costs, varies substantially. The more affordable setups are these which are totally integrated. That may be, the camera is in fact portion of the microscope, collectively with its many optic parts. These units are transportable, sturdy and very affordable. Nevertheless, additionally they generally have low magnification levels. Their typical use is for students inside the classroom or for youngsters as type of a entertaining hobby.
For the older hobbyist or much more professional mind, there's the self-contained microscope camera. This can be a microscope with digital camera which sits atop the all-purpose microscope. This can be not that high priced, but has more flexibility with all the camera zoom. At the high end is the digital camera which is separate however, thanks to a particular adapter, attaches to a separate microscope. The specialist will generally use this configuration, simply because it gives the optimum zooming capability and lets you use particular viewing possibilities.
POINT #4: The particular accessories you are going to need to have. You'll find separate accessories which might be typically necessary to connect your camera to your microscope--and ultimately for your camera or monitor for viewing the images. 1 accessory is usually a specific stand which holds your camera and holds the specimen that you happen to be studying. Other conditions will possess the camera mounted to the microscope, either by putting an eyepiece on the camera or through a camera adapter.
Then, when you have taken images in the specimen, these photos must be viewed someplace. At times this may be on a video or laptop or computer monitor. This signifies you will have to have the cable to connect the camera towards the monitor and possibly a video system to record the pictures. Extra generally, though, you will connect your camera to a computer via an USB port and cable. In the event you intend to complete this, ensure that, prior to you acquire your digital microscope camera, that you have a spare USB port.
If you use a stand-alone digital camera / adapter setup, you could ought to settle for viewing the image on the camera's LCD screen though you capture the full-resolution image onto your memory card. Provided that you clearly understand these 4 points, you are going to be capable of be certain you select the ideal digital microscope camera for the purposes.
For much more information, please feel cost-free to stop by our webiste www.microscopebiz.com.
Friday, October 26, 2012
Buying the Right Television - Part 2 - Options
Television technologies
Several types of television receivers are available, each with upchecks and downchecks:
CRT
Cathode Ray Tube is the standard the older generations grew up watching. It's like a large light bulb, the screen end coated with phosphorescent pixels, the other with an 'electron gun' which, when charged with electricity, emits electrons; the electrons hit the pixels, the pixels glow. Older CRTs have a curved screen, but newer models are 'flat screen TV'--not to be confused with 'flat panel TV,' meaning the whole TV is thin. Upchecks: Being well established technology, it is least expensive to buy and repair. CRTs project a really dark black. Downchecks: Bigger and heavier than others. If you put something nearby with a big magnet (like a large speaker) you can affect the picture.
DLP TV
Digital Light Processing are projection TVs; they shine light through a color wheel onto a semi-conductor chip with microscopic mirrors. The light is reflected through a projection lens on to a big screen. Upchecks: Clear images with seamless clarity at any size; stunning, bright picture with rich, dark shades; light in weigh, fairly sturdy and not affected by heat, humidity or vibration. Downchecks: Only available in big-screen. A DLP television is flat panel, but needs about as much space as CRTs because they require good ventilation and must sit away from the wall. For a DLP TV, wall mount isn't an option and they don't produce sharp text. They have a very hot light source lamp that needs to cool down properly or it won't last as long as it should. Viewing angles are not as wide as other types.
LCD TV
Liquid Crystal Displays, or LCD TVs, were first used as computer monitors. They have tiny crystals embedded in the screen which glow red, green or blue when hit by an electrical charge. Varying the charge varies the color intensity; varying which crystals get charged varies the color. Upchecks: Images can be very sharp and very bright. If the set is near a window, LDC televisions are less affected by glare. LCD TVs are great for TV wall mounts. Downchecks: LCDs don't do really dark black, and if you want a really big screen, you won't find it on an LCD flat screen TV.
Plasma TVs
Plasma televisions are like a neon sign controlled by a computer. Two plates of glass have microscopic bubbles of neon & xenon gas and pixels between them. When this gas is excited by electrical charges, it becomes plasma, giving off photons which make the phosphor pixels glow. Upchecks: High resolution; a smooth, even image across the whole screen; plasma televisions can display billions of colors for a truly realistic picture; a distortion-free wide viewing angle; a plasma TV is also light enough for a TV wall mount. Downchecks: Black levels are only okay; if left on the same image too long, screen-burn can occur, meaning a permanent 'ghost' image is visible (bigger problem with video games than movies or TV); plasma TVs are heavier and more delicate than LCD televisions of comparable size.
Television features
Aspect ratio
Two numbers describing how screen width relates to screen height. Standard screen is 4:3, meaning a 480i resolution screen is 640x480 pixels. Wide screen is 16:9, meaning a 1080i screen is 1920x1080 pixels. Go wide screen if you can -- you will thank us later.
Cable or Dish TV
If you subscribe to satellite television or cable, your service provider will give you a satellite dish or cable box to decode their signals.
Closed captioning
Text appears across the bottom of the screen to aid the hearing impaired -- also useful for those learning a language -- it's a built-in feature of most televisions and DVDs.
Contrast ratio
The difference between the brightest and dimmest colors the set can show; the higher the ratio, the better the image -- 5,000:1 is good; 10,000:1 is fabulous; 15,000:1 is, well, really expensive!
HDTV versus HD-ready TV
An HD-ready or HD monitor cannot display high definition pictures unless the signal is processed through an external HD tuner before it goes into the set. A true HD television has a factory-installed HD receiver.
Picture-in-picture
A small second picture appears in a corner of the TV screen so viewers can watch two programs at one time. The wife can watch her reality show, and the husband can watch his game, or vice versa.
Response time
The amount of time it takes for a pixel to go from black to white and back again. It's like a camera's shutter speed; the lower the number, the faster the speed, the better the picture.
Screen size
Because one number is more convenient, screen sizes are measured diagonally--a 32-inch LCD TV screen is a little under 28 inches wide x 16 inches high. Difficult as it is to believe, there is such a thing as a too-big television (well, that's what they tell us). Movie and sports fans, especially, want the biggest TV screen they can get, but they also want to see the whole image clearly. Choose a screen that fits your room. If you will sit 5-7 feet away, go up to 41-inches; 8-9 feet, up to 44 inches; 10-11 feet, up to 50 inches; 11-13 feet, up to 60 inches; 13-14 feet, up to 70 inches; over 15 feet, over 70 inches. Of course, you really haven't seen the opening of the first Star Wars
movie until you've watched it sitting 5 inches from a 50-inch TV!
Mounts
TV wall mounts can hang your set on the wall like a picture--great for uncluttered decor schemes. A few sets include a TV wall mount, but most must be purchased separately. If you go this way, get a TV set with a wide viewing angle so you can see it from the side as well as straight on. Be sure you attach the TV mount securely and directly to the studs -- a flat panel TV is still not all that light. A TV shelf is another great wall option.
Final thought: Buy a combo meal instead of a sandwich.
If you have a television, most likely you also have a DVD or VCR or both. You can save money and space by getting a TV/DVD/VCR combo. Choices include TV-VCR, TV-DVD, DVR-VCR, etc. Whatever your platter of choice, these are especially good for dorm rooms, apartments and other small spaces.
Several types of television receivers are available, each with upchecks and downchecks:
CRT
Cathode Ray Tube is the standard the older generations grew up watching. It's like a large light bulb, the screen end coated with phosphorescent pixels, the other with an 'electron gun' which, when charged with electricity, emits electrons; the electrons hit the pixels, the pixels glow. Older CRTs have a curved screen, but newer models are 'flat screen TV'--not to be confused with 'flat panel TV,' meaning the whole TV is thin. Upchecks: Being well established technology, it is least expensive to buy and repair. CRTs project a really dark black. Downchecks: Bigger and heavier than others. If you put something nearby with a big magnet (like a large speaker) you can affect the picture.
DLP TV
Digital Light Processing are projection TVs; they shine light through a color wheel onto a semi-conductor chip with microscopic mirrors. The light is reflected through a projection lens on to a big screen. Upchecks: Clear images with seamless clarity at any size; stunning, bright picture with rich, dark shades; light in weigh, fairly sturdy and not affected by heat, humidity or vibration. Downchecks: Only available in big-screen. A DLP television is flat panel, but needs about as much space as CRTs because they require good ventilation and must sit away from the wall. For a DLP TV, wall mount isn't an option and they don't produce sharp text. They have a very hot light source lamp that needs to cool down properly or it won't last as long as it should. Viewing angles are not as wide as other types.
LCD TV
Liquid Crystal Displays, or LCD TVs, were first used as computer monitors. They have tiny crystals embedded in the screen which glow red, green or blue when hit by an electrical charge. Varying the charge varies the color intensity; varying which crystals get charged varies the color. Upchecks: Images can be very sharp and very bright. If the set is near a window, LDC televisions are less affected by glare. LCD TVs are great for TV wall mounts. Downchecks: LCDs don't do really dark black, and if you want a really big screen, you won't find it on an LCD flat screen TV.
Plasma TVs
Plasma televisions are like a neon sign controlled by a computer. Two plates of glass have microscopic bubbles of neon & xenon gas and pixels between them. When this gas is excited by electrical charges, it becomes plasma, giving off photons which make the phosphor pixels glow. Upchecks: High resolution; a smooth, even image across the whole screen; plasma televisions can display billions of colors for a truly realistic picture; a distortion-free wide viewing angle; a plasma TV is also light enough for a TV wall mount. Downchecks: Black levels are only okay; if left on the same image too long, screen-burn can occur, meaning a permanent 'ghost' image is visible (bigger problem with video games than movies or TV); plasma TVs are heavier and more delicate than LCD televisions of comparable size.
Television features
Aspect ratio
Two numbers describing how screen width relates to screen height. Standard screen is 4:3, meaning a 480i resolution screen is 640x480 pixels. Wide screen is 16:9, meaning a 1080i screen is 1920x1080 pixels. Go wide screen if you can -- you will thank us later.
Cable or Dish TV
If you subscribe to satellite television or cable, your service provider will give you a satellite dish or cable box to decode their signals.
Closed captioning
Text appears across the bottom of the screen to aid the hearing impaired -- also useful for those learning a language -- it's a built-in feature of most televisions and DVDs.
Contrast ratio
The difference between the brightest and dimmest colors the set can show; the higher the ratio, the better the image -- 5,000:1 is good; 10,000:1 is fabulous; 15,000:1 is, well, really expensive!
HDTV versus HD-ready TV
An HD-ready or HD monitor cannot display high definition pictures unless the signal is processed through an external HD tuner before it goes into the set. A true HD television has a factory-installed HD receiver.
Picture-in-picture
A small second picture appears in a corner of the TV screen so viewers can watch two programs at one time. The wife can watch her reality show, and the husband can watch his game, or vice versa.
Response time
The amount of time it takes for a pixel to go from black to white and back again. It's like a camera's shutter speed; the lower the number, the faster the speed, the better the picture.
Screen size
Because one number is more convenient, screen sizes are measured diagonally--a 32-inch LCD TV screen is a little under 28 inches wide x 16 inches high. Difficult as it is to believe, there is such a thing as a too-big television (well, that's what they tell us). Movie and sports fans, especially, want the biggest TV screen they can get, but they also want to see the whole image clearly. Choose a screen that fits your room. If you will sit 5-7 feet away, go up to 41-inches; 8-9 feet, up to 44 inches; 10-11 feet, up to 50 inches; 11-13 feet, up to 60 inches; 13-14 feet, up to 70 inches; over 15 feet, over 70 inches. Of course, you really haven't seen the opening of the first Star Wars
movie until you've watched it sitting 5 inches from a 50-inch TV!
Mounts
TV wall mounts can hang your set on the wall like a picture--great for uncluttered decor schemes. A few sets include a TV wall mount, but most must be purchased separately. If you go this way, get a TV set with a wide viewing angle so you can see it from the side as well as straight on. Be sure you attach the TV mount securely and directly to the studs -- a flat panel TV is still not all that light. A TV shelf is another great wall option.
Final thought: Buy a combo meal instead of a sandwich.
If you have a television, most likely you also have a DVD or VCR or both. You can save money and space by getting a TV/DVD/VCR combo. Choices include TV-VCR, TV-DVD, DVR-VCR, etc. Whatever your platter of choice, these are especially good for dorm rooms, apartments and other small spaces.
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