Radio portion of the electromagnetic spectrum Radio waves are divided up into bands by frequency (and corresponding wavelength) as shown in the radio frequency spectrum table below. {| ! ! ! ! ! | < 3 Hz
> 100,000 km Extremely low frequency ELF 1 3-30 Hz
100,000 km - 10,000 km Communication with submarines Super low frequency SLF 2 30-300 Hz
10,000 km - 1000 km Communication with submarines Ultra low frequency ULF 3 300-3000 Hz
1000 km - 100 km Communication within mines Very low frequency VLF 4 3-30 kHz
100 km - 10 km Submarine communication, avalanche beacons, wireless heart rate monitors, geophysics Low frequency LF 5 30-300 kHz
10 km - 1 km Navigation, time signals, AM longwave broadcasting Medium frequency MF 6 300-3000 kHz
1 km - 100 m AM (Medium-wave) broadcasts High frequency HF 7 3-30 MHz
100 m - 10 m Shortwave broadcasts, amateur radio and over-the-horizon aviation communications Very high frequency VHF 8 30-300 MHz
10 m - 1 m FM, television broadcasts and line-of-sight ground-to-aircraft and aircraft-to-aircraft communications Ultra high frequency UHF 9 300-3000 MHz
1 m - 100 mm television broadcasts, microwave ovens, mobile phones, wireless LAN, Bluetooth, GPS and Two-Way Radios such as FRS and GMRS Radios Super high frequency SHF 10 3-30 GHz
100 mm - 10 mm microwave devices, wireless LAN, most modern Radars Extremely high frequency EHF 11 30-300 GHz
10 mm - 1 mm Radio astronomy, high-speed microwave radio relay Above 300 GHz
< 1 mm |}
aids
no, mechanical waves are not radio waves
star like a sun big but not really starlike and xray gives off radio waves ......
Radio waves ARE electromagnetic waves.
Radio waves are electromagnetic waves that carry energy. When these waves are absorbed by the radio's antenna, they induce electrical currents in the circuitry of the radio. This process allows the radio to convert the energy from the radio waves into sound, enabling us to hear broadcasts. However, radio waves themselves do not heat; it is the conversion of that energy into electrical signals that allows the radio to function.
aids
no, mechanical waves are not radio waves
star like a sun big but not really starlike and xray gives off radio waves ......
Radio waves ARE electromagnetic waves.
Transverse. Radio waves are electromagnetic waves, which are transverse.
No. Radar waves are one category of radio waves. Think of all the radio waves that are all around you right now . . . AM radio, FM radio, police and fire radio, highway patrol radio, taxi radio, television picture and sound radio waves, cellphone radio waves, garage-door-opener radio waves, bluetooth radio waves, WiFi waves, microwaves ... and you can't see any of them ! Radar waves can easily be there in the group.
Radio waves are electromagnetic waves occurring on the radio frequency portion of the electromagnetic spectrum.
by changing the amplitude or frequency of the radio waves.
Both, actually. We create radio waves to transmit data. TV and radio, cell phones and GPS, radar and microwave ovens - all transmit radio waves. We've been doing this constantly for coming up on a century (starting with just the radio waves). But there is a lot of "radio frequency noise" created throughout the universe, mostly in stars. This noise comes in a range of frequencies, and is looked at by astronomers using radio telescopes like the "big dishes" we often see in films and on TV. It's always there, and the radio waves include what is called cosmic background radiation, which is the "echo" or "aftershock" of the Big Bang. It comes from basically "everywhere" in the sky.
Radio Waves - radio station - was created in 2010.
by changing the amplitude or frequency of the radio waves.
Radio and light waves are electromagnetic waves, sound waves are not.