radios use antennas, i went on a humanitarian trip to Africa and found TV's that use antenna instead of satellite/cable. so what is the difference between radio and TV waves, are they the same?
and then how are both different from internet, does wireless internet also use antenna if it is not provided by a cellphone company
and then how are both different from internet, does wireless internet also use antenna if it is not provided by a cellphone company
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All wireless transmissions use radio waves - of different frequencies and in different formats, but radio waves. Signals can be sent in digital format as short codes or as variable amplitudes or frequencies that are proportional (analog) to the content.
Cell phones use lots of towers and relatively short range so that more people can use cell phones in a given city, etc. If you have read about the old radio phones that preceded cell phones, which covered a whole city from one tower, only about 25-30 people could use such a phone at the same time due to limited frequencies and the equipment was so big they could only be carried in cars. With computers and transistors, each cell could use the same frequencies and switch from cell to cell while traveling.
Wireless in a house or building has a transmitter/receiver in the router to convert via a modem to the internet and there is an antenna in the cell phone or lap top or pad to complete the connection.
Cell phones use lots of towers and relatively short range so that more people can use cell phones in a given city, etc. If you have read about the old radio phones that preceded cell phones, which covered a whole city from one tower, only about 25-30 people could use such a phone at the same time due to limited frequencies and the equipment was so big they could only be carried in cars. With computers and transistors, each cell could use the same frequencies and switch from cell to cell while traveling.
Wireless in a house or building has a transmitter/receiver in the router to convert via a modem to the internet and there is an antenna in the cell phone or lap top or pad to complete the connection.
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Television regardless of whether its received via satellite or an antenna in transmitted via radio waves. So television transmissions are radio waves. Wireless internet I'm assuming (wifi) uses an antenna on the router to send and receive radio waves to and from your computer. The radio waves contain the internet signals. The radio waves used in each allocation are at different frequencies or cycles per second.
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I think the answer you're looking for is frequencies. They are all different.