How Do You Spell ANGLE OF ABERRATION?

Pronunciation: [ˈaŋɡə͡l ɒv ˌabəɹˈe͡ɪʃən] (IPA)

The term "angle of aberration" refers to the angle between the true position of a celestial object and its apparent position as a result of the Earth's movement. It is important to note that the word "aberration" is pronounced /ˌæbəˈreɪʃən/ with stress on the second syllable, and not pronounced /æbərˈeɪʃən/ as one may expect. The IPA phonetic transcription can help indicate the correct pronunciation of words, which is especially important in scientific contexts where precise communication is necessary.

ANGLE OF ABERRATION Meaning and Definition

1. The angle of aberration is a term used in physics to describe the phenomenon of the apparent displacement of an object due to the combination of its own motion and the motion of the observer. Specifically, it refers to the angle between the true direction of an object and its perceived direction as seen by an observer moving relative to it.

   When an object is viewed from a moving platform or vehicle, the apparent position of the object is slightly shifted in the direction of the observer's motion. This effect is known as aberration of light and is a consequence of the finite speed of light combined with the relative motion between the object and the observer.

   The angle of aberration is a measure of this displacement and is typically given in units of arcseconds. It is calculated by taking into account the velocity of the observer, the speed of light, and the angles involved in the system.

   In astronomy, the angle of aberration is used to correct celestial coordinates for the motion of the observer on Earth. This correction is crucial to accurately determine the position of celestial objects, especially for telescopic observations. By accounting for the angle of aberration, astronomers can precisely calculate the true position of celestial bodies relative to the observer's location and time of observation.

2. A. of refraction.

   A practical medical dictionary. By Stedman, Thomas Lathrop. Published 1920.

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