Flashcards
Waves
Cards in this deck (15)
- 1Phase is...A point long a wave in a wavelength
- 2Transverse Wave -All EM waves are transverse
Vibrations are at 90 degrees from direction of movement - 3Longitudinal Wave -All sound waves are longitudinal
Vibrations are in the same direction as movement. The consist of rarefactions and compressions. - 4Intensity -The measure of the energy a wave has.
Intensity = Power / Area - 5Polarisation -Polarised light only travels in one plane.
Reflected light is partially polarised. - 6Ultrasound Imaging -Waves are reflected and transmitted at interferences. Shorter pulses and wavelengths produce clearer images since they diffract less.
- 7Superposition -Occurs when two or more waves are on top of one another. Meaning their amplitudes add together.
- 8Coherent -When two sources have the sam wavelength and frequency, with an even phase difference.
- 9Stationary Waves -When a progressive wave is reflected.
No energy is transmitted.
Stationary waves create loops in string.
Tension = mass x gravity - 10Converging Lens -Brings light rays together
f - is positive - 11Diverging Lens -Spread rays outwards
f - is negative - 12Power -is by how much a lens will bend light.
- 13A spectra -it all the colours in white light
- 14Light...Was thought as a wave for while since it created interference and diffraction patterns.
- 15Photoelectric Effect...If you give a metal energy it can emit an electron. Certain frequencies have more energy. Waves wouldn't show this property but a photon would.
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- Physics Physics (Waves) Flashcards on Waves, created by Ross Dillon on 08/06/2017.
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- Ross Dillon
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