X-Rays
All wavelengths shorter than the low part of the ultra-violet spectrum are shielded from us by the atmosphere.
Sound is a mechanical wave that requires a medium, such as air or water, to propagate. Electromagnetic waves, on the other hand, do not require a medium and can travel through a vacuum. This fundamental difference in how they travel means that sound is not considered part of the electromagnetic spectrum.
Yes, radio waves can penetrate Earth's atmosphere. They are part of the electromagnetic spectrum and are able to pass through the atmosphere with minimal interference, which allows them to be used for various forms of communication, such as radio and television broadcasts.
Most of the light emitted by humans is in the infrared part of the electromagnetic spectrum.
Radio waves have the lowest energy in the electromagnetic spectrum.
Sound.
Gamma rays have the shortest wavelength in the electromagnetic spectrum.
The part of the electromagnetic spectrum that we can see is called visible light. It is the range of electromagnetic radiation that the human eye is sensitive to, with wavelengths between approximately 400 to 700 nanometers.
Yes, infrared waves can travel through a vacuum because they do not require a medium for propagation. This is because infrared radiation is part of the electromagnetic spectrum, and all electromagnetic waves can travel through a vacuum.
If you mean "on air" as with radio and television, mobile telephones etc., then no they do not. They are part of the electromagnetic spectrum and are transmitted through this. I suppose you could say they pollute the electromagnetic spectrum.
We call that the visible or optical spectrum.
Sound waves are not part of the electromagnetic spectrum. Sound waves are mechanical waves that require a medium, such as air or water, to propagate, unlike electromagnetic waves which can travel through a vacuum.