Electromagnetic wave HD

The propagation of a linearly polarized electromagnetic wave: the vectors of the electric field E and the magnetic field H are perpendicular to each other and to the direction of the wave propagation. Another principle of electro-magnetic wave propagation is that the vectors E and H oscillate in phase, i.e. they achieve the maximum value in the same points of the space.

http://physics-animations.com/

Category:

Education

Tags:

• physics
• electricity
• electromagnetic
• wave
• education
• animation

[jethomas5]

This is the traditional way to show the wave but it is too simple. It graphs the electric field and the magnetic field along points on a line. But electric fields are scalar. They don't have a direction, except for the gradient. For the picture to make sense you would need to show enough of the surrounding radiation to see the gradient. That would be a lot more complicated.

[jethomas5]

This is not the only way it can go. This is linearly polarized light. Circularly polarized light looks very different. Circularly polarized light is the sum of two different linearly polarized waves that are out of phase. Some people say that this means that linearly polarized light is fundamental and everything else is combinations of that. But I think linearly polarized light is the sum of two different circularly polarized waves that are out of phase too. So which is more basic?

[jethomas5]

This is a traditional visualization of one way an EM wave could go while fitting Maxwell's equations. There might not be any such thing as EM radiation, maybe it's all some kind of weird particles, but Maxwell's equations do fit the data at least as well as Newton's equations fit relativity.

[LOLipopz28]

This is so cool! I am a kinesthetic learner, but I visualizing stuff like this really helps, also. Thanks a lot! I am going to take my physics final tomorrow... EEEEEEEKKK! Thank you for making this vid, though. This will really help. :0)

[sinachiniforoosh]

@IQ20000Berta I didn't say that I know what matter is, you're right about the mysteriousness of everything, I just say that according to what I know from physics right now, it's not very accurate to say I'm an EM wave, hm?

[IQ20000Berta]

@sinachiniforoosh if you know what matter is, you are the new canditade for the next 10 physic nobelprices in a row. Nobody knows what matter really is. What is an electron proton quark and so on. Your EM Wave Information is a dancing cloud through the space till it is eaten up by the dark matter.

Everything is a mystery, but good to have the maxwell and einsteins equations, they explain our world a little bit.

[sinachiniforoosh]

@IQ20000Berta I'm not saying that EM waves are not interesting, I'm talking about the video, besides, I'm not an EM wave, I emit them.Now maybe you can say that I'm a wave whose wavelength is inversely proportional to my momentum by a factor h, but that's not an EM wave, that's a matter wave.

[IQ20000Berta]

@sinachiniforoosh that's you, you are a EM Wave

[MohammedHammady]

روعة



[sinachiniforoosh]

not very interesting...