photodetector

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Srinivasa Ramanujan, Indian mathematician and autodidact.

6 Interesting Facts about Srinivasa Ramanujan

Fish. Lionfish. Lion-fish. Turkey fish. Fire-fish. Red lionfish. Pterois volitans. Venomous fin spines. Coral reefs. Underwater. Ocean. Red lionfish swims by seaweed.

10 of the World’s Most Dangerous Fish

Hemp (Cannabis sativa).

9 Mind-Altering Plants

Stylish light blue jeans on wooden background, closeup of inset pocket

Why Do Jeans Have That Tiny Pocket?

Four year old boy with grandfather and father lighting Hanukkah menorah. Photo taken on: December 21st, 2009

Which Is Correct: Hanukkah or Chanukah?

Nativity Scene, Adoration of the Magi, Church of the Birth of the Virgin Mary, Montenegro

Why Is Christmas in December?

Scottish fold cat. A genetic mutation caused (in the original cat-1961) the ears to bend forward and down.

Shorthair Cat Breeds

photodetector

instrument

Also known as: photosensor

Learn about this topic in these articles:

facsimile transmission

In fax: Standard fax transmission
…solid-state scanner that has 1,728 photosensors in a single row. Each photosensor in turn generates a low or high variation in voltage, depending on whether the scanned spot is black or white. Since there normally are 4 scan lines per mm (100 scan lines per inch), the scanning of a…
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spectral diffraction

In spectroscopy: Diffraction
An electronic photodetector placed behind the slit can then be used to measure the amount of light in each part of the spectrum. The advantage of such an arrangement is that photodetectors are extremely sensitive, have a fast time response, and respond linearly to the energy of…
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