NATS 1870 Lecture Notes - Lecture 9: Chromosphere, Neutral-Density Filter, Earth Ii
16 Oct 2014
School
Department
Course
Professor
Document Summary
Glass rigid liquid (solid, with internal structure of a liquid): melting temperature for sand (silicon dioxide ) is 1700 degrees c, mixed with calcium oxide and sodium oxides( lowers the melting( ) temperature to 600 degrees. Particles scatter the only long red " s is short " s via go through glass. Greenish oxygen( )emission: 501nm example of collisionally excited emission": oxygen ions are present in the nebula (twice ionized uv photons from nearby stars have removed two e from oxygen, free e within the nebula collide with the oxygen ions and transfer some of their kinetic energy to the oxygen ion, an e within the oxygen ion jumps to a higher energy level, when the e drops to a lower level, it emits the 501nm (green) photon dust. Solar wind particles get captured by earth"s magnetic field ( )
