Atoms in a thin, hot gas (such as a neon advertising sign), according to Kirchhoff's laws, emit light at
A) specific wavelengths or colors in a pattern that depends on the element.
B) only visible wavelengths.
C) all wavelengths, the shape of the continuum spectrum depending on the temperature of the gas.
D) only one specific wavelength or color.

Question

Quizplus · Accepted Answer

Kirchhoff's laws of spectroscopy explain that atoms in a thin, hot gas emit light at specific wavelengths or colors that are characteristic of the element, forming an emission spectrum. This is why, for example, neon signs have distinct colors depending on the gas used.

Atoms in a Thin, Hot Gas (Such as a Neon