Transmission electron microscopes function in a manner similar to overhead projector, with a beam of electrons passing through a slice of material then being projected by lenses on a photographic slide or a charge-coupled device.

* Transparency ( projection ), a thin sheet of transparent material for use with an overhead projector

Some small ripple tanks fit onto the top of an overhead projector, i. e. they are illuminated from below.

The 755CV featured another design quirk: the screen could be separated from the lid, allowing it to be used to project the computer display using an overhead projector, before data projectors were commonplace.

An overhead projector is a variant of slide projector that is used to display images to an audience.

An overhead projector typically consists of a large box containing a very bright lamp and a fan to cool it.

Better-quality overhead projectors offer an adjustment wheel or screw on the body of the projector, to move the lamp towards or away from the fresnel lens.

The lamp technology of an overhead projector is typically very simple compared to a modern LCD or DLP video projector.

The most recent innovation for overhead projectors with integrated lamps / reflectors is the quick-swap dual-lamp control, allowing two lamps to be installed in the projector in movable sockets.

The first overhead projector was used for police identification work.

As the demand for projectors grew, Buhl Industries was founded in 1953, and became the leading US contributor for several optical refinements for the overhead projector and its projection lens.

The overhead projector facilitates an easy low-cost interactive environment for educators.

A liquid-crystal panel mounted in a plastic frame was placed on top of the overhead projector and connected to the video output of the computer, often splitting off the normal monitor output.

By removing the casing and backlight assembly of a common LCD monitor, one can use the exposed LCD screen in conjunction with the overhead projector to project the contents of the LCD screen to the wall at a much lower cost than with standard LCD projectors.

Due to the mirroring of the image in the head of the overhead projector, the image on the wall is " re-flipped " to where it would be if one was looking at the LCD screen normally.

The optical focus, linearity, brightness and clarity of an overhead generally cannot match that of a video projector primarily due to the plastic fresnel lens, which can only approximate what would normally be an extremely large and heavy glass lens.

Critics feel that there are some downsides as these technologies are more prone to failure and have a much steeper learning curve for the user than a standard overhead projector.

Furthermore, the overhead projector allows a more direct interaction through live writing on the transparency.

These are then placed on an overhead projector for display to an audience.

With the Apple Video Adapter you can connect to your TV, VCR, or overhead projector via S-Video or Composite cables.

It is a modern equivalent of the slide projector or overhead projector.

The materials given to teachers and studends include overhead transparency masters, student worksheets, and a teacher's guide.

A simple example is an overhead projector transparency.

SLMs are used extensively in holographic data storage setups to encode information into a laser beam in exactly the same way as a transparency does for an overhead projector.

In order to use an overhead projector, a transparency must be made of whatever is being projected onto the screen.

Sanders helped recruit retired Navy Rear Admiral Ronne Froman to be CEO, and oversaw the turnaround of the local chapter, which resulted in support for victims of the Cedar wildfire, praise from former critics for the transparency of fund raising efforts, and a staff re-organization that substantially reduced overhead costs.

In 2009, Intelligent Giving, an independent charity rating organization, indicated Smile Train's annual report lacked transparency, the organization's claim of " less than one per cent overhead " figure is inaccurate, and that the organization's claim that it is " hyper-efficient " cannot be verified.

Variable-width encodings allow a unified character encoding standard such as Unicode to use only the bytes necessary to represent a character, reducing the overhead that follows merging large character sets with smaller ones.

In the early days of silent film-making and up until the late 1910s, movie studios did not have the elaborate lights needed to illuminate indoor sets, so most interior scenes were sets built outdoors with large pieces of muslin hanging overhead to diffuse the lighting.

The mandatory requirement to fit under overhead wire for the traction engine electrical power supply sets the height limit for the railcars to allow for trailer transport.

In the 1980s, Zenith encountered increasing financial difficulty as their market share progressively went to Japanese companies who had lower overhead, and could sell their sets cheaper.

The version of Siemens metro train designed for Melbourne included several attributes similar to existing Melbourne suburban electric trains such as being single-deck and operating in M-T-M ( motor-trailer-motor ) sets of three carriages, where the motor cars each have an overhead pantograph, and two of these 3-car sets are generally coupled together to form a 6-carriage train when run in revenue service, though a single set may be run when demand does not merit a full train.

At this point, the telephone system will often provide an option for the person to make an announcement through a public address system ( often consisting of some or all of the telephone sets and or overhead paging speakers controlled by the telephone system ).

Paint continuous lane stripes and install overhead directional lights as on our bridges.

Our suspicions eventually centered, by the process of elimination, on a grocer's boy, a thoroughly bad hat, who delivered cartons to the people overhead.

He paused on the landing to steady his breathing and then bent to examine the single door by the light of the weak bulb overhead.

And the hours were six-thirty in the morning until eleven at night on Saturdays and during sales, and there were no chairs and you couldn't smoke and the cooling was overhead fans and there was no porter or janitor.

A United States postage stamp of 1945 shows the Arc de Triomphe in the background as victorious American troops march down the Champs-Élysées and U. S. airplanes fly overhead on 29 August 1944.

If Hōkūleʻa could be kept directly overhead, they landed on the southeastern shores of the Big Island of Hawaiʻi.

Lets may occur because of some unexpected disturbance such as a shuttlecock landing on court ( having been hit there by players on an adjacent court ) or in small halls the shuttle may touch an overhead rail which can be classed as a let.

In the forecourt and midcourt, most strokes can be played equally effectively on either the forehand or backhand side ; but in the rearcourt, players will attempt to play as many strokes as possible on their forehands, often preferring to play a round-the-head forehand overhead ( a forehand " on the backhand side ") rather than attempt a backhand overhead.

Powers Fasteners, the makers of the adhesive, revised their product specifications on May 15, 2007 to increase the safety factor from 4 to 10 for all of their epoxy products intended for use in overhead applications.

Depending on the definition, equatorial constellations can include those that lie entirely between declinations 45 ° north and 45 ° south, or those that pass overhead between the tropics of Cancer and Capricorn.

The sun's most southerly position, which is attained at the northern hemisphere's winter solstice, is now called the Tropic of Capricorn, a term which also applies to the line on the Earth at which the sun is directly overhead at noon on that solstice.

0 km-There are no railways in Cape Verde, although there was a short overhead conveyor system for salt from the open salt lake on Sal to the port at Pedro de Lume and a short stretch of rail track to the pier at Santa Maria used for a similar purpose.

For example, if the main shot is of a man walking down an alley, possible cutaways may include a shot of a cat on a nearby dumpster or a shot of a person watching from a window overhead.

Depending on local circumstances and tradition they may be powered either by diesel engines located below the passenger compartment ( diesel multiple units ) or by electricity picked up from third rails or overhead lines ( electric multiple units ).

* Turns: the follow can be turned with an overhead, a free, or an Apache turn on the slows or the quicks-quicks ( to do so on the quick-quick is considered more traditional )

The doors can slide in either direction along one axis on parallel overhead tracks, sliding past each other.