{c}
{tag=Physicist}
{title2=1852–1931}
{wiki}

= Albert Abraham Michelson
{c}
{synonym}

= A. A. Michelson
{c}
{synonym}

A <physicist>.https://www.nasonline.org/wp-content/uploads/2024/06/michelson-a-a.pdf[Independent biographical identity and professional specialization]{ref}

The <Michelson interferometer> turns a change in an optical path into a shift of <interference fringes>. Controlling the returning beams and counting the shifts can connect very small distances to a <wavelength>.

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{title=Portrait of <Albert A. Michelson>}
{description=Moffett Studio; The World's Work 41 (1921), p. 420. https://commons.wikimedia.org/wiki/File:Portrait_of_Albert_Abraham_Michelson.jpg[Commons PD-US claim based on expired protection / pre-1931 publication; status outside the US may differ.], via Wikimedia Commons.}
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 Albert A. Michelson (source code)