A medium
Medium
medium
No. It is radiation, not vibration. As electromagnetic energy, it can travel through a vacuum, and only through transparent or translucent material.
Mechanical waves need a medium substance to travel through. Electromagnetic do not.
Any substance!
Heat and light energy travel through space and matter
In any substance, all electromagnetic waves travel at the same speed that light travels through that substance.
Since sound is a mechanical wave (it needs a substance to travel through) it cannot travel through a vacuum.
All substances.
Radiation energy
electromagnetic energy
Yes they do need particles to travel through!
Through conductors.