Wilhelm Wien
= Wilhelm Wien
{c}
{title2=1864–1928}
= W. Wien
{c}
{synonym}
A <physicist>.https://www.uni-wuerzburg.de/uniarchiv/persoenlichkeiten/gelehrtentafeln/wilhelm-wien/[Independent biographical identity and professional specialization]{ref}
<Wien's displacement law> connects a thermal spectrum's peak position to <temperature>. Specifying whether the spectrum is expressed per unit <wavelength> or per unit <frequency> is essential to stating which peak is meant.