Air, boat or car.
From 1957 to 1963
yes
8
raw car, invented by me
people who have powers
Yes. An antenna is only used to receive or send a signal. A RF signal travels throughout any air medium independently of the existence or not of an antenna. Of course you will need an antenna if you want to receive the signal (which has to have, by the way, more or less the same lenght of the wavelength of the RF signal), but the propagation of a electromagnetic wave doesn't need a physical support. You can see an example with the radiotelescopes. They receive signals which come from the outer space without any physical support. Electromagnetic waves (and RF signal is one kind of them) doesn't need any physical media to travel (they travel in vacuum too!)
Microwave signals travel at the speed of light in air, which is approximately 299,792,458 meters per second. This high speed allows microwave signals to transmit data rapidly over long distances.
mid air!
Without different gases there will be no air, if there is air, how can oxygen travel?
No.
Sound waves are detected by the ear. Sound waves are longitudinal waves that require a medium, such as air, to travel through. These waves cause vibrations in the eardrum, which are then converted into electrical signals that are interpreted by the brain as sound.
Radar signals travel at the speed of light, which is approximately 186,282 miles per second (299,792 kilometers per second) in a vacuum. In different mediums like air or water, radar signals may travel slightly slower due to their refractive index.
No, sound cannot travel through a room with no air because sound waves need a medium, such as air, water, or a solid, to propagate. Without a medium, there is nothing for the sound waves to travel through.
sound can't travel through a vacuum. or a place without air.
Radio signals travel at (essentially) the speed of light, as they are electromagnetic waves like light. Sound waves travel at roughly 1200 km/h. Now you have enough information to answer your own question.
Smells travel through the air as invisible molecules released from objects or substances. When we breathe in, these molecules enter our nose and bind to receptors in our nasal cavity, sending signals to our brain that we interpret as different scents.