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
basidiomycota
- comprises fungi bearing the spores on basidium: Gasteromycetes (puffballs); Tiliomycetes (comprising orders Ustilaginales (smuts) and Uredinales (rusts)); Hymenomycetes (mushrooms; toadstools; agarics; bracket fungi); in some classification systems considered a division of kingdom comprises fungi bearing spores on a basidium; includes Gasteromycetes (puffballs) Tiliomycetes comprising the orders Ustilaginales (smuts) and Uredinales (rusts) Hymenomycetes (mushrooms, toadstools, agarics bracket fungi).