Aberration of light

1729 Aberration of light

The book of science

Tom Sharp

James Bradley electromagnetism

Aberration of light

It’s not where it seems

Hans discovered that the light rain that slanted toward him
when he moved with the light wind slanted away from him
when he stood still.

Aberration of sight

Aberration is not parallax, which Friedrich Bessel used in 1838 to calculate the distance to a star. Parallax is the apparent movement of an object relative to a more distant object, and depends on the movement of the observer and the distance of the object from the observer. Aberration of light is the apparent displacement of an object and depends only on the speed of light and the movement of the observer. Both aberration and parallax, however, support the Copernican theory that the earth revolves around the sun.

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