Infinity Chamber
2017
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Learn about transverse and longitudinal waves through the examples of a shaken rope and a sound wave. Finally learn about the difference between a single wave pulse and periodic waves. Created by Sal Khan .
- 13 min
- Sal Khan
- Andrew M's answer is definitely correct if you meant sound through an electrical speaker; however, if you are referring to a tin can telephone, the...
- To elaborate a bit, building materials are transparent to long wavelength waves because a wall will only absorb the energy of waves that have the r...
- It's actually quite hard to define energy, but I would say @Ethan Dlugie gives the best definition here.
- Light can exert pressure though not much. The pressure exerted by electromagnetic radiation is called *Radiation Pressure*. http://en.wikipedia.org...
- yes they make the tiniest amount of sound,according to the no of vibrations,called hertz,the sound is inaudible below 20hz
- In microwaves, electromagnetic waves are used to heat up your food. The waves in your microwave are the same sort of waves that make up visible light.
- Great question! Unfortunately, the answer is kind of complicated. In general, if you keep EVERYTHING ELSE the same, the speed of sound in a gas (li...
- Some molecules which are pushed forward collide with the particles which are already present in the space forward. Because of these collisions they...
- Transverse waves: Electromagnetic waves(light waves, Radio waves),wave in a string etc. Longitudinal waves: compression waves in a spring, sound wa...
- Yep! Even the most tiniest amount of sound is made by the vibration of atoms, just like any other.
In this video David shows how to determine the equation of a wave, how that equation works, and what the equation represents. Created by David SantoPietro.
- 15 min
- David SantoPietro
- @Hannah C. The heart of the wave equations as David described them are trigonometry functions, sine and cosine. Trig functions take angles as argum...
- If y(x)=cos(x-1) then at x=1 y=cos(0) so at x=1 you are seeing what would normally be at x=0 and in order to do that you have to move the point fro...
- Hello Xue, Nope. The speed at which the wave moves through a medium is constant. Actually, that is an oversimplification, the wave's velocity depen...
- The goal was to find an equation of the given wave in terms of distance "x" and time "t," so that if you insert any distance and time, the equation...
- You could look at the phase constant as if it *added* to the wave's shift towards the next peak according to our chosen default point of time. Such...
- It's not a mistake. The speed of the wave will not change depending on the values inputted into the wave function. Essentially, the only purpose of...
- Like the narrator says at 3:09, if the wave starts the cycle at a maximum, it is a cosine wave, and if it starts at its axis, then it is a sine wav...
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About. Transcript. Waves are disturbances that travel, transferring energy without moving matter. They have key characteristics like period, wavelength, and frequency. The speed of a wave can be affected by its type and the medium it travels through.
- 7 min
- Khan Academy
The Wave Equation Video Tutorial provides a logical derivation of the wave equation, demonstrates how to use it to solve physics word problems, and explains how changes in frequency effect the wavelength when the medium does not change. The video lesson answers the following questions:
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