Please, science wonks, help me out. I'm VERY into this and it's hard to get all the info together. What are the colors associated with computer enhanced (infrared or whatever) NASA photos? So, I'm finding this..... http://www.nasa.gov/mission_pages/chandra/multimedia/casa2012.html I'm trying to get a clear view of what the color designations are per element. I'd really appreciate any help I can get. Cites would be greatly appreciated too. Like this: Colors = red= (elements) green= blue= Please help.....
spectral elements: http://astro.u-strasbg.fr/~koppen/discharge/ protiens/molecules: For most proteins, the observations from numerous laboratories have shown that for trp residues in proteins (1) the mean decay times increase with increasing observation wavelength; (2) decay associated spectra generally show longer decay times for the longer wavelength components; and (3) collisional quenching of proteins usually results in emission spectral shifts to shorter wavelengths. Additional evidence for spectral relaxation comes from the time-resolved emission spectra that usually shows time-dependent shifts to longer wavelengths. These overall observations are consistent with spectral relaxation in proteins occurring on a subnanosecond timescale. These results suggest that spectral relaxation is a significant if not dominant source of nonexponential decay in STP, and should be considered in any interpretation of nonexponential decay of intrinsic protein fluorescence. http://cfs.umbi.umd.edu/cfs/reprints/On Spectral Relaxation in Proteins.pdf keep in mind that no 2 atoms can combine without a photon (per se) of light upon that mass, in one wavelength or another (all cases) see bohr analogy for assistance on that
Images taken by telescopes that observe at the "invisible" wavelengths are sometimes called "false color images." That is because the colors used to make them are not "real" but are chosen to bring out important details. The color choice is usually a matter of personal taste, and is used as a type of code in which the colors can be associated with the intensity or brightness of the radiation from different regions of the image, or with the energy of the emission. Chandra X-ray images of Cassiopeia A CASSIOPEIA A (BW Neg) CASSIOPEIA A (RED-ORANGE) CASSIOPEIA A (Multi-color) For example, in the black and white Chandra X-ray image of the supernova remnant Cassiopeia A (Cas A) shown on the left, the darker shades represent the most intense X-ray emissions, the lighter shades of gray represent the areas of less intense emission, and the white areas represent the areas of little to no emission. In the yellow and orange version in the middle, a different "color code" was shown. There, the white and yellow colors represent the areas of highest X-ray intensity, the orange to red areas represent the areas of lower intensity, and the black represents little or no emission. Variations in intensity in an X-ray image are usually associated with variations in the density, or concentration, of hot gas. In this image, the bright regions are associated with shock waves produced by an expanding shell of hot gas. The version of Cas A on the right shows an image constructed by selecting different X-ray energy bands from the data, and using a color code to represent these. This representation can highlight temperature variations in the gas, with higher temperatures associated with higher energy X-rays, etc. The choices of energy bands and colors are arbitrary, but X-ray astronomers generally follow the convention that the low, medium, and higher X-ray energy bands of the Chandra data are shown as red, green, and blue respectively. In this particular image, red, green and blue represents X-ray energy bands of 0.3 to 1.55 kilovolts, 1.55 to 3.34 kilovolts, and 3.34 to 10 kilovolts, respectively. http://chandra.harvard.edu/photo/false_color.html
Flame tests Flame tests are useful because gas excitations produce a signature line emission spectrum for an element. In comparison, incandescence produces a continuous band of light with a peak dependent on the temperature of the hot object. When the atoms of a gas or vapor are excited, for instance by heating or by applying an electrical field, their electrons are able to move from their ground state to higher energy levels. As they return to their ground state, following clearly defined paths according to quantum probabilities, they emit photons of very specific energy. This energy corresponds to particular wavelengths of light, and so produces particular colors of light. Each element has a "fingerprint" in terms of its line emission spectrum, as illustrated by the examples below http://www.webexhibits.org/causesofcolor/3BA.html Because each element has an exactly defined line emission spectrum, scientists are able to identify them by the color of flame they produce. For example, copper produces a blue flame, lithium and strontium a red flame, calcium an orange flame, sodium a yellow flame, and barium a green flame just food for thought I like the OP
