HIT 1403 Lecture Notes - Diffraction, Refraction, Planck Energy
Document Summary
2 : e l e c t r o n s i n a t o m s. Dispersion of different wavelength components of a light beam through the interference produced by re4lection from a grooved surface. Studying light- matter interactions allows energy changes to be detected. A disturbance that transmits energy through space or medium. Magnetic 2ield component lies in plane perpendicular to electric 2ield component. Produced by accelerating an electrically charged particle (maxwell) Amplitude: height of crest or trough. Wavelength: distance between crests or troughs (m) Frequency: number of crests or troughs that pass through a give point over time (cycles/second or hertz) Velocity = wavelength x frequency. C = 2. 99792458 x 10^8m/s (speed of light) In phase: constructive interference (crest meets crest or trough meets trough) Out of phase: destructive interference (crest meets trough) Speed of light varies in speed in different mediums. Therefore, it is refracted (bent) when passes from one to another.
