Astronomer Cecilia Payne-Gaposchkin spent nearly a year in “utter bewilderment” after arriving at the Harvard College Observatory in the early 1920s. She often worked into the late evening and felt ...

DURING 1932, work has been carried on in this laboratory on the measurement of the relative intensity of spectral lines in the above elements. The amount of material available was very limited ...

Studying the line spectra produced by hot gases and absorbed by cooler gases allows us to identify the elements in stars. When a gas is very hot, it doesn’t emit all wavelengths of light.

The Atomic Spectroscopy Group provides standardized measurements used across wide swaths of science and industry. The Trump ...

claimed to use highly accurate X-ray measurements and that this enabled him to record several spectral lines with precisely the frequencies expected of element 87, which he promptly named moldavium.

As a result each produces photons with different energy and so the line spectra for different elements will be different. This means that line spectra can be used to identify elements. Continuous ...

Spectra are specific sets of colors emitted by different atomic elements. Those sets of colors act as atomic fingerprints that are used to characterize a wide variety of things — from the gases ...