we see in EM spectrum, microwaves on one side and x rays on the other side of visible light. Both x rays and micro waves are harmful for humans why visible light is not harmful for us.
2007-11-15 04:56:49 · 2 answers · asked by Kasprov 1 in Science & Mathematics ➔ Physics
Well, to be a bit more precise, the frequencies that border the visible spectrum are infared and ultraviolet. Microwave is beyond the infared, and x rays are beyond the ultraviolet. UV, x-rays, and gamma rays all carry quite a bit of energy per photon and are in fact harmful (UV is what gives you a sunburn). IR, microwave, and radio carry less energy per photon than visible light and are not harmful unless the intensity is very high, as in a laser or a microwave oven.
2007-11-15 05:07:02 · answer #1 · answered by jgoulden 7 · 0⤊ 0⤋
Q: A radiostation broadcasts on a frequency of 93.7mHz. If the wavelength is 3.202m, what is the velocity (in m/sec) of the electromagnetic waves in space?
2016-05-23 06:58:38 · answer #2 · answered by ? 3 · 0⤊ 0⤋