Draft Science #5 ::: frequency and wavelength

[tersse]

schrodingasdawg have you made any efort to make this consept clearer, than say me or inmendham has or have you just confused ppl more, i think you just confused ppl, were not looking for pure accuarcy, were looking i tink to explane a complicated idea in a way most ppl can under stand it.

[cydonianman]

hmm...connecting the dots, or photons in this case :D

cool vid

[tersse]

ph value try to stay on topic, ramblings like this vid you posted would be better served just posted on your site under phylosophy or religion.

[ColoradoTick]

Forgive my ignorance, but what exactly is phylosophy? Be more careful using wikipedia to look smart laughing boy!

[ColoradoTick]

Yeah cannot beat a bit of phylosophy, lol!

[schrodingasdawg]

Got it wrong.

Wavelength and frequency are meaningful concepts even if only one quantum of the electromagnetic field ("photon").

The electromagnetic field has electric field and magnetic field components, which can be described as a superposition of sinusoidal (sine/cosine) waves (see Fourier analysis). A wave of the electromagnetic field is one of oscillating electric and magnetic fields, each perpendicular to the other. The electric field is a force field which pushes a positive...

[schrodingasdawg]

...test charge in the direction that it's "pointing" (the concept of "pointing", of a vector field being constructed as to explain this phenomenon). So, in an electromagnetic wave, you have an electric field oscillating (in a sinusoidal fashion) from a maximum value to zero to a minimum to zero back to the maximum. (Or, you have a superposition of such waves.) You go from a field that pushes an electron in one direction with a certain force to a field that doesn't act on an electron to...

[schrodingasdawg]

...one that pushes the electron in the opposite direction. Maximum, zero, minimum. Or crest, node, valley. The amount of space between any two identical parts of the wave at a given time is the wavelength. The number of identical parts of the wave that pass a given position per unit time is the frequency.

As for photons: the electromagnetic field is quantized. This means that an electromagnetic wave of a specific frequency can only be carrying an amount of energy equal to an integer...

[schrodingasdawg]

...times a certain, smallest possible energy: a "quantum" of the electromagnetic field. These are the photons.

Photons don't have to have a specific frequency (and therefore a specific energy), though. An important principle in quantum mechanics is that any superposition of of realizable states is also a realizable state. A photon can be partly one frequency and partly another. Or a superposition of infinitely many different frequency photons, as happens to be the case.

[schrodingasdawg]

Of course, since you need to put infinitely many waves together to get something fairly localized in space, you don't have definite wavelength or frequency. (And also, neither momentum or energy.) You do have average frequency (thus average energy) and average wavelength (thus average momentum) though. And since signals are localized in space, what equipment tends to read is the average frequency/wavelength.

Anyway, the point: frequency and wavelength are still meaningful for photons.

[grinzella]

Can I buy this Gelmo toy somewhere, look at how many sentences it knows.

[makiavelli999]

Thanks man! An American with IQ and balls! hehe

[matrixcmitech]

i've been doing telecom for 20 years, frequency & wavelength are critical to interpreting information from communications. the 3rd most critical aspect is TIMING.

[seneca4295]

More draft science videos, please :)

[logicaust]

I'm thinking that access to calculus, higher level calculus and pure mathematics would be useful for this kind of science. Perhaps physics, too. This is all assuming that there isn't anything loosely related to what you're talking about already; have you tried trolling Google Scholar for cited works or anything like that?

Google have got a lot of textbooks available (some aren't complete), but they nonetheless should have a lot on quantum physics, etc.

Peace.

[oojamaflipper]

v interesting and useful.. more please..

[Tefer65i]

I think you might have confused nuber of photons (i.e. the intensity of the light) with the idea of wavelength. If you want to understand how wavelength and frequency theoretically fit with photons you would be reading up on wave packets..

[jedimasterbooboo]

Five stars for the hairdo.

[f417h]

Thank You

-Appreciate

[Trollschool]

You're the Monkey of our time ...

[ThePointlessPoint]

yeah right thanks

[firebark]

thats cool how you can draw on screen like that

[f417h]

ACE

[phvalue323]

This kind of stuff is what I love.

[pfarabee]

Think of a wave as a vibration. The wavelength is the distance between peaks of the vibration. Frequency is the rate at which peaks cross a stationary point. Each hertz is one cycle/second.

For radio, you have to define whether it's AM or FM. AM works by changing the signal strength (amplitude modulation) to represent audio. It is harder to get clear audio with AM

FM is encoded by modifying the frequency of the signal. The excess frequency over the base frequency is the content.

[RDJim]

minitons? Is that a real scienterrific term or are you just making this stuff up as you go along?

[mystimayhem]

thanks

[theracemixer]

The maximum information that can be transmitted in a (radio wave) is in the range of UHF

[geroldkid]

I heard Saturn's hexagonal feature had to do with wavelengths...

[DynaCatlovesme]

Go back to the textbook and start over, lol.

[Imacynicalfucker]

Next fiber optics?

[AimiriZ]

I miss the Ganooze

: (

[unforgivingreality]

Me too.

[Imacynicalfucker]

You hair is a different frequency today?

[maulcs]

It's huge.

[libanlibanliban]

ok. That made me laugh out loud.

[karausu]

The soul patch has to go brotha.