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/sci/ - Science & Math

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6960462 No.6960462 [Reply] [Original]

Researching the elctromagnetic spectrum. Shit's weird.
>this can go through solid materials but not this
>this will give you cancer but not this
>mfw realising we are soaked in EMR 24/7

But I can't figure out what determines the range of wi-fi routers and cellphones. In my world the more power you add the longer range but the higher power would also change the frequency?

>> No.6960476

Magnets.

>> No.6960482

>>6960462
Nope. Frequency and amplitude are separate. Both determine the power.

For instance, think of the form of EM we call light. The frequency determines the color - but you can have really bright blue light as well as dim blue light. Frequency is color, amplitude is brightness.

If you want to think of it as photons, the frequency determines the energy a single photon carries, but the power not just determined by the energy of the photons, but also by *how many* photons you are emitting each second.

>> No.6960487

The receiver determines the range.

>> No.6960492

>>6960482
Amplitude, cheers.