What Is a CCD (Charge-Coupled Device)

question 104

Multiple Choice

What is a CCD (charge-coupled device) ?

• A) detector in which a small electric current is controlled by a bimetallic strip that expands and contracts in response to infrared radiation
• B) electronic filter to single out one wavelength or set of wavelengths for studying astronomical objects
• C) 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) array of small light-sensitive elements that can be used in place of photographic film to obtain and store a picture

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Definitions:

Z

Often referred to as the Z-score, which is a statistical measure that describes a value's relationship to the mean of a group of values.

Normal Probability Distribution

A statistical function that describes all the possible values and likelihoods that a random variable can take within a given range, characterized by its bell-shaped curve, symmetric about the mean.

Standard Deviation

A statistical metric that quantifies the dispersion or variability of a dataset relative to its mean.

Mean

The average of a set of numbers, calculated by dividing the sum of the values by the number of values.