What is megahertz in radio/tv transmission?

Question

What is megahertz in radio/tv transmission? Is it always positive; any probable or possible consequences, and scientific effects? Is there any effort to explore the negative and to unlimit the extent?

Answer 1

Megahertz refers to frequency. 1 megahertz equals 1 million cycles per second. With most radio transmissions, the carrier wave changes amplitude across a zero voltage reference, and is therefore positive and negative with respect to ground. Megahertz frequencies have little or no effect on living tissue.

I have no clue what your last question is, and I suspect, neither do you.

Answer 2

Hertz is the number of vibrations per second(frequency) of the wave being transmitted. Megahertz would be millions of vibrations per second. There is some study going on, on the affect of these waves on the body. Workmen are wearing special badges that register hertz. and their health is being followed. Remember that the velocity of the waves is frequency times wavelength and radio and TV waves are rather large wavelength. Electrical appliances also give off these waves which can be seen as interference on TV or radio.

Answer 3

the megahertz number is the frequenzy of the transmission, the number of waves sent in a second. The rest of your question is just nonsense

Answer 4

Hi. One Hertz equals one wave cycle per second. This just means that a wave - whether water, air, or photons - that completes one rise and fall cycle in one second has a "frequency" of one Hertz (Hz). You hear sound from about 20 Hz to about 20,000 Hz. 20,000 Hz is abbrieviated to 20 kHz (kilo Hz). 20 million Hz is abbriviated to 20 MHz (million or mega Hz). FM radio goes from about 88 MHz to 108 Mhz. Frequencies are usually thought of as only positive, although the way commertial FM works the frequency varies positive and negative from the station's assigned value. It gets kind of complicated but I hope this starts you thinking.