Flashcards
Waves
Cards in this deck (13)
- 1what is a wave?A wave transports energy from one place to another.
- 2what is the difference between a mechanical wave and an electromagnetic wave?A mechanical wave needs a medium to travel through but an electromagnetic wave can travel in a vacuum.
- 3what is a crest and a trough?A crest is the highest point of a wave where as the trough is the lowest point.
- 4What is the period and frequency?The period time it takes for an entire wave to pass and the frequency is the number of waves that pass in a single second.
- 5what is the formula for the speed of a wave?A waves velocity is it's wavelength times it's frequency.
- 6What is phase difference?It is the distance between two identical points on different waves measured in radians or degrees.
- 7Phase difference formula in radians?2Pi times distance over wavelength.
- 8What is the difference between a longitudinal and a transverse wave?Longitudinal waves oscillate in the direction of travel where as transverse waves oscillate perpendicular to the direction of travel.
- 9What is refraction?Refraction occurs when a waves travels through different medium.
- 10What is the refractive index?It is the ratio of the speed of light in a vacuum over the speed of light in another medium.
- 11What is Snell's law and show the formula?Snell's law uses angles to calculate the refractive index.
n1sin(theta1) = n2sin(theta2) - 12What is the critical angle, show Snell's law simplified form?It is the angle incidence at which all the light is totally internally reflected.
sin(c) = 1/n - 13—
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- Physics Flashcards on Waves, created by Emile Schonborn on 09/11/2019.
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- Emile Schonborn
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