"Spectrum" stands on a launchpad at Andoya Spaceport in Nordmela, on Andøya island, Norway, on March 21, 2025. BRADY KENNISTON / AP The first orbital rocket launched from continental Europe ...

ridvan_celik / Getty Images Companies must choose between absorption costing and variable costing in their accounting systems, and there are advantages and disadvantages to either choice.

The Atomic Spectroscopy Group at the National Institute of Standards and Technology (NIST) provides the definitive measurements of atomic spectra. Spectra are specific sets of colors emitted by ...

Details of their findings were published in Nature Physics. "By leveraging nitrogen K-edge transient absorption spectroscopy, we were able to directly capture oscillatory electronic population ...

This report shows that absorption in the solar spectrum near 4.2µ is due to collision-induced absorption by nitrogen, and presents a short discussion of the importance of the rotational collision ...

Laboratory of Environmental Technology, INET, Tsinghua University, Beijing 100084, P.R. China Beijing Key Laboratory for Radioactive Waste Treatment, Tsinghua ...