What Is a CCD (Charge-Coupled Device)

question 377

Multiple Choice

What is a CCD (charge-coupled device) ?

• A) a detector in which a small electric current is controlled by a bimetallic strip that expands and contracts in response to infrared radiation
• B) an electronic filter to single out one wavelength or set of wavelengths for studying astronomical objects
• C) a device in which an image from a photographic plate or film is transferred to a computer by moving static-electric charges directly into the computer memory in a manner similar to modern copying machines
• D) an array of small, light-sensitive elements that can be used in place of photographic film to obtain and store a picture