differences between single beam and double beam spectrophotometer
Spectrophotometry There are two major classes of devices: single beam and double beam. A double beam spectrophotometer[13] compares the light intensity between two light paths, one path containing a reference sample and the other the test sample. A single-beam spectrophotometer measures the relative light intensity of the beam before and after a test sample is inserted. Although comparison measurements from double-beam instruments are easier and more stable, single-beam instruments can have a larger dynamic range and are optically simpler and more compact. Additionally, some specialized instruments, such as spectrophotometers built onto microscopes or telescopes, are single-beam instruments due to practicality.
Corona Spectroscopy measurements indicate strong ionization and plasma temperature in excess of 1,000,000 kelvins,[1] much hotter than the surface of the Sun.
Rate equation k is the first order rate constant, which has units of 1/s or sâˆ’1.
Alonso Álvarez de Pineda