Physics Waves

Physics Waves

Light Spectrum
1. Gamma Rays
2. X-Rays
3. Ultraviolet
  1. Johan Ritter, 1801
4. Visible Spectrum
5. Microwaves
6. Radio
7. Infrared
  1. Frederick Herschel, 1800
Properties
1. Waves carry information and energy
2. Waves do not need a medium to travel through
3. Transverse waves oscillate at right angle to the direction of travel
4. Longitudinal waves oscillate in a single direction
Amplitude, wavelengths and frequency
1. Amplitude: Height of wave
2. Wavelength: Length of wave
3. Frequency: Number of times the wave passes the same points (in Hz)
Wave speed = v = f × λ
1. v = Wave speed in metres per second
2. f = Frequency in hertz
3. λ = Wave length in meters
Refraction and defraction
1. Refraction:When waves pass across a boundary with materials with varying densities
  1. Change in direction
2. Diffraction
  1. When waves spread out when they "jump" a gap.
Seismic Waves
1. P-waves: Longitudinal, faster
2. S-waves: Transverse
3. Cause earthquakes
4. S-waves can only travel through solids, whereas P-waves can move through solids and liquids
5. Location of an earthquake can be calculated by calculating the difference between P and S-waves

Zusammenfassung der Ressource

	Erstellt von George Coote vor mehr als 9 Jahre