The Charge-Coupled Device (CCD), Now Used Extensively for Astronomical Imaging

question 170

Multiple Choice

The charge-coupled device (CCD) , now used extensively for astronomical imaging, works on what principle?

• A) Light from the image modifies the plastic material on a disk, which can then be read on a standard video compact disk (CD) player.
• B) A single optical detector generates an electrical signal as it is scanned quickly across the astronomical image.
• C) Light generates electrical charge on a computer-readable multi-element array of detectors.
• D) Light from the image is detected by new, high-sensitivity, fine-grain, automatically processed film.

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Definitions:

Travertine

A form of limestone deposited by mineral springs, especially hot springs, known for its layered, textured appearance.

Limestone

A sedimentary rock composed mainly of calcium carbonate, typically formed under marine conditions.

Dissolution

The process of dissolving, where a solid becomes incorporated into a liquid to form a solution, often referring to geological processes.

Calcium Carbonate

A chemical compound, CaCO3, found in rocks (as the minerals calcite and aragonite) and is the main component of pearls, the shells of marine organisms, snails, and eggs.