Term of the Day
The quantity of light absorbed or emitted from a sample containing atomsThe smallest particle of an element that can be involved in chemical combination with another element; an atom consists of protons and neutrons in a tiny, very dense nucleus, surrounded by electrons, which occupy most of its volume. measured as a function of wavelengthThe distance between the crests of adjacent waves (or between any adjacent corresponding points in waves); used in the context of electromagnetic radiation., frequencyThe rate at which a periodic event occurs; specifically, the rate at which the waves of electromagnetic radiation pass a point., or energyA system's capacity to do work.. An atomic spectrumThe quantity of light absorbed or emitted from a sample containing atoms measured as a function of wavelength, frequency, or energy. An atomic spectrum can be used to identify an element, even in a distant star. can be used to identify an elementA substance containing only one kind of atom and that therefore cannot be broken down into component substances by chemical means., even in a distant star.