CHARGE-COUPLED DEVICE
\t͡ʃˈɑːd͡ʒkˈʌpə͡ld dɪvˈa͡ɪs], \tʃˈɑːdʒkˈʌpəld dɪvˈaɪs], \tʃ_ˈɑː_dʒ_k_ˈʌ_p_əl_d d_ɪ_v_ˈaɪ_s]\
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(CCD) A semiconductor technology used to buildlight-sensitive electronic devices such as cameras and imagescanners. CCDs can be made to detect either colour orblack-and-white. Each CCD chip consists of an array oflight-sensitive photocells. The photocell is sensitised bygiving it an electrical charge prior to exposure.
By Denis Howe
Word of the day
Dopamine Acetyltransferase
- An enzyme that catalyzes the of groups from acetyl-CoA to arylamines. They have wide specificity for aromatic amines, particularly serotonin, and can also catalyze acetyl transfer between arylamines without CoA. EC 2.3.1.5.