What is meant by am and FM radio waves?

The acronym “am” refers to amplitude modulation which is a form of amplitude modulation on a carrier wave. The frequency of the carrier wave stays the same, but the amplitude is periodically changed to represent the sound of your voice or a musical instrument. AM is not the only form of amplitude modulation. There are also frequency modulation and pulse modulation.

What is am and FM radio waves?

The two types of radio wave are amplitude modulation (AM) and frequency modulation (FM). Frequency modulation is the type of modulation used in most broadcast radio. You’ve probably heard radio stations in the past. Its carrier wave is a sine wave, which is a wave that looks like a wave on the ocean.

What is it mean when you say am and FM radio waves?

Both types of radio waves are electromagnetic waves. The frequency of an electromagnetic wave determines how much energy it contains. At lower frequencies, the energy is less; thus, the waves are less powerful than those at higher frequencies. Because the energy of radio waves is related to their frequency, radio waves at lower frequencies are easier to generate.

What's the difference between am and FM radio waves?

The key difference between the two is the frequency. AM radio waves are around 15kHz, which is very low. FM radio waves are around 300MHz, which is a high frequency. That means that a small “signal strength” can be picked up from an FM radio but not from an AM radio.

What is am and FM radio?

Another form of radio waves is amplitude modulation (AM), which is used for transmitting voice. AM is a very low-frequency (a few kHz is plenty) radio wave that is easily blocked by buildings, trees, etc. It’s also used for the emergency alert system known as the Emergency Weather Advisory, which is the last warning to get out if you are in danger from severe thunderstorms or tornadoes.