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Emergency broadcasting, for one. You cannot beat radio as the cheapest way to communicate to the masses. A radio can be portable, entertaining, and working in most locations. The radio is a mature technology and the device is very inexpensive. A radio does not require a lot of energy to run -- a hand-crank one can work too.
What else can I help you with?
Are radio waves transverse waves or longitudinal waves?
Transverse. Radio waves are electromagnetic waves, which are transverse.
Which kinds of electromagnetic waves are used for communication?
Electromagnetic waves used for communication include radio waves, microwaves, and light waves (in the form of lasers). These waves are commonly used in technologies such as radio communication, satellite communication, Wi-Fi, and fiber optic communication.
Are electromagnetic waves that are felt as heat are called radio waves?
No, electromagnetic waves that are felt as heat are called infrared waves, not radio waves. Radio waves have lower frequencies and longer wavelengths than infrared waves.
What is is radio sound heard through the use of?
Radio sound is heard through the use of radio waves, which are electromagnetic waves that can carry information from one point to another. These waves are transmitted from a radio station and received by a radio receiver, such as a radio or smartphone, which then converts the waves into sound waves that we can hear.
Are radio waves harmful or helpful to human health?
Radio waves are generally considered to be harmless to human health at typical exposure levels. However, high levels of exposure, such as those from certain medical devices or industrial equipment, can potentially cause health risks.
What do people explore space with?
Radio Waves! (:
How bad the radio waves are for people?
Not very. As far as I know there's no real evidence that radio waves cause any measurable harm to people.
Does mechinal waves have radio waves?
no, mechanical waves are not radio waves
How are electromagnetic waves different to radio waves?
Radio waves ARE electromagnetic waves.
Are radio waves transverse waves or longitudinal waves?
Transverse. Radio waves are electromagnetic waves, which are transverse.
How radio waves harmful?
Radio waves are harmful to people because they give off radiation. Radiation is known to cause cancer in humans.
Are radar waves visible?
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.
How do you people use radio waves?
Radio waves have the longest wavelengths in the electromagnetic spectrum. These waves can be longer than a football field or as short as a football. Radio waves do more than just bring music to your radio. They also carry signals for your television and cellular phones
What is electromagnet spectrum waves?
Light and heat are very helpful to human beings, and radio has become pretty important too.
How are radio and television waves added to em radio waves?
by changing the amplitude or frequency of the radio waves.
What radio waves?
Radio waves are electromagnetic waves occurring on the radio frequency portion of the electromagnetic spectrum.
What is Different between radio wave and elcetromagnetic wave?
That's like asking "What is different between children and people ?".Radio waves are electromagnetic waves.
