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(R-Y and B-Y) is stronger than that of green (G-Y). SECAM differs from
the other color systems by the way the R-Y and B-Y signals are carried.
First, SECAM uses frequency modulation to encode chrominance
information on the sub carrier. Second, instead of transmitting the red and
blue information together, it only sends one of them at a time, and uses the
information about the other color from the preceding line. It uses a delay,
an analog memory device, for storing one line of color information. This
justifies the "Sequential, With Memory" name. Because SECAM
transmits only one color at a time, it is free of the color artifacts present in
NTSC and PAL and resulting from the combined transmission of both
signals.
Vision Scope – Ken-A-Vision’s name for microscopes specifically designed for looking
at large (macro) objects such as coins, stamps, whole organisms, etc. It is an
analogous term to Dissecting Microscope or Stereo Microscope. Vision Scopes
differ from Compound Microscopes because within the head of the objective
there are two parallel lens systems, both viewing the specimen in parallel, giving
a three dimensional image to the viewer. All Vision Scopes have both transmitted
and Incident light.
Wall Plate - Provided with a Ceiling DocCam II, provides the connecting site for the
signal being transmitted from the ceiling camera, and allows output of a
composite or S-Video signal, which in turn may be connected to a projector, TV
VCR or DVR.
Warranty – refers to the standard amount of time in which Ken-A-Vision will replace a
product that is defective or fails to operate, as long as the failure is not due to
abuse or misuse of the product.
Weight – Quantity or amount of heaviness, how much does the Ken-A-Vision product
weigh for purposes of shipping.
White Balance – Is the need for a video chip in a camera to ‘know’ what white (the
combination of all color) is in a given lighting and color situation. By setting
while balance, one tells the camera which object in the room is white and
supposed to come out white in the picture. The camera can calculate the
difference between the current color temperature of that object and the correct
color temperature of a white object and then shift all colors by that difference.
Most advanced digital cameras provide the feature to manually set the white
balance. By pointing the camera at a white or gray card (angled so that it is
reflecting light from the room) as a neutral reference, filling the screen completely
with it, then pressing the White Balance button (or set it in the menu), the camera
does its White Balance calculation. (See also APPENDIX B for more
exhaustive detail).
Widefield eyepiece (see Eyepiece - Widefield)
x/y Floating Stage (see Floating Stage)
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