If we have the entire electromagnetic spectrum at our disposal, yes, we can determine the elemental composition of any substance based on the emission spectrum of the elements. But we would need ...

1. Schematic of magnetically tunable emission and absorption of GMR structure coupled to n-InAs and comparison of zero-field absorptivity and emissivity: Schematic of the GMR structure on InAs ...

This paper reviews techniques for determining B concentration and isotopie ratio and their application to soil and plant samples. Boron concentration has been determined utilising spectrophotometry, ...

Robert Williams, Edward B. Jenkins, Jack A. Baldwin, Brian Sharpee, Comparative Absorption and Emission Abundance Analyses of Nebulae: Ion Emission Densities for IC 418, Publications of the ...

Also shown are examples of small absorption signals caused by cold hydrogen gas structures in the Milky Way. The combination of emission and absorption signals enables the exploration of gas ...

That 2014 observation showed radiation emanating with 3.5 kiloelectron volts (keV) of energy, and a new analysis detected an absorption of X-rays — also at 3.5 keV — surrounding a supermassive ...