sodium light

In a 2019 Nature Communications study, researchers used a low-pressure sodium light to cast a yellow tint on an entire room.

Retinas need different wavelengths to capture color information, and in the sodium light’s single wavelength, people struggled to differentiate colors.

Frank and Sheikh wondered if sodium light would be used by a civilization that developed differently — perhaps their eyes would function in different parts of the spectrum.

Its shiny skin glinted in the sodium light of the loading bay; its floor wasn’t sticky; the seats didn’t smell like fried chicken.

Pyrotechnics sputtered into life, their sodium light cutting through the fog.