The Spectroscopy of Human Knowledge
01/08/2014 12:00 Indexed under: 0_about-this-index
A spectrum (plural spectra or spectrums) is a condition that is not limited to a specific set of values but can vary, without steps, across a continuum. The word was first used scientifically in optics to describe the rainbow of colors in visible light after passing through a prism. As scientific understanding of light advanced, it came to apply to the entire electromagnetic spectrum. Source: Wikipedia.