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antiquark
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How can you make radio waves? Explain it scientifically
antiquark said:How can you make radio waves? Explain it scientifically
rbj said:how 'bout a sort of folk explanation?
radio waves is electromagnetic radiation, which is also what visible light (and many other frequencies) are. the fundamental physics is that charges of like polarity repel each other and charges of different polarity attract each other.
so imagine you are i are holding charges of opposite polarity (that attract each other) and i perturb my charge (essentially a transmitting antenna) and that causes your charge to be perturbed (which is essentially a receiving antenna). if i do this a million times a second, it can be tuned in with an AM radio; 100 million times a second, in your FM radio; or 500 trillion times a second, you would see it as a blur of orange light. or, i can send you Morse code by perturbing my charge and letting your charge react.
if a third party who is equal distant from both you and me, when this observer sees me perturb my charge and sees your charge react, it will be delayed by an interval of time equal to the distance between us divided by c. that's essentially what electromagnetic radiation is.
antiquark said:Okay thanks. But I'm still curious about how you perturb your charge. What are the ways to perturb your charge?
rbj said:how 'bout a sort of folk explanation?
radio waves is electromagnetic radiation, which is also what visible light (and many other frequencies) are. the fundamental physics is that charges of like polarity repel each other and charges of different polarity attract each other.
Lucho bacacho said:If radio waves and light are both electromagnetic radiation with the only difference being their wavelength and possibly amplitude, then does that mean that radio waves just like visible light are made up of photons?
Does this mean you can create a laser of radio waves or microwaves just like you would for a visible light laser?
Lucho bacacho said:If radio waves and light are both electromagnetic radiation with the only difference being their wavelength and possibly amplitude, then does that mean that radio waves just like visible light are made up of photons?
Does this mean you can create a laser of radio waves or microwaves just like you would for a visible light laser?
Radio waves are a type of electromagnetic radiation that has a wavelength longer than infrared light. They are used to transmit signals for communication, such as radio and television broadcasts.
Radio waves are created when an electric current oscillates back and forth in an antenna. This causes the electrons in the antenna to move back and forth, creating electromagnetic waves that travel through the air.
The frequency of a radio wave is inversely proportional to its wavelength. This means that as the frequency increases, the wavelength decreases, and vice versa.
Radio waves have a longer wavelength and lower frequency than other types of electromagnetic radiation, such as visible light and X-rays. They also have the ability to travel through obstacles, such as buildings and trees.
Radio waves have a wide range of applications in everyday life, including radio and television broadcasting, wireless communication, radar systems, and GPS technology. They are also used in medical imaging and remote sensing for weather forecasting and monitoring Earth's climate.