Everything except visible light (cosmic, X-rays, radio, infra-red, ultra-violet, etc.).
Consider a blind person, he cannot see sun but he can tell if he is standing in sun or shade, how? Because he can feel infrared waves heating up his/her skin. Similarly there are certain substances that are sensitive to certain kind of waves, there can be an arrangement to detect these like a circuit to detect radio waves and so on.
"Visible" light is the only kind of electromagneticenergy waves you can see. But it's notthe only kind of energy wave you can see.You can certainly see ocean waves in the water, seismic waves in the land, standing waveson a guitar string, and traveling waves running up and down a long guy-wire.
Ears detect sound waves, which are mechanical vibrations that travel through a medium such as air, water, or solid materials. These waves cause the eardrum to vibrate, which is then translated into electrical signals by the inner ear and sent to the brain for processing and interpretation as sound.
They are transverse waves.
They are tranverse waves.
visible waves visible waves
Radio waves.
Transverse wave
transverse
compressional waves they swerve up and down
The spectrum contains all possible hues. It's kind of silly to ask what color it is.
Sound waves are created by mechanical vibrations that travel through a medium, such as air or water. When an object vibrates, it causes nearby air molecules to also vibrate, creating areas of compression and rarefaction. Our ears can detect these vibrations and perceive them as sound.