SPECSTROSCOPY
Spectroscopy is the study of the absorption and emission of light and other radiation by matter, have to do with the dependence of these procedures on the wavelength of the radiation. The definition has been increased to include the study of the interactions between particles such as electrons, protons and ions, as well as their interaction with other particles as a function of their collision energy. Spectroscopy is used in astronomy and remote sensing. Most large telescopes have spectrometers, which are used either to measure the chemical composition and physical properties of astronomical objects or to measure velocities from the Doppler shift of their spectral lines. Spectroscopy applied to pharmacy is used as a solution to various specific problems that include of drug identity, test purity, interactions between active medicaments and excipients, patient of antibiotics and more. In this area spectroscopy is important in the field of pharmacy because it was proved by its recent successful applications. It is also used in physical and analytical chemistry for the identification of substances through the spectrum emitted from or absorbed. Spectroscopy is used to study stars. Using an optical light with a ground based telescope, astronomers are able to determine stars and its composition, also the temperature. The colour spectrum consists of the following in the particular order Red, orange, yellow green, blue, indigo and violet. It also better known as ROY G BIV, it helps people remember the order of the colours.