Light travels very slowly in glass compared to water and vacuum
You'd have to say a vacuum. Sound doesn't propagate at all in vacuum .
I think that translates into zero speed, slower than which you can't get.
Light does travel through a vacuum.
No. Only light waves can travel through a vacuum.
Sound cannot travel through a vacuum.
The sound not travel through vacuum because sound need a medium to travel.
Light waves can travel can travel in different ways depending on the object. It can travel through a vacuum which is a complete airless place, mirror, but sound has to travel through a solid or gas.
i think voice cannot travel through vacuum.
how electron move in vacuum and not move in air
No, sounds cannot travel through a vacuum. This is because sound requires a medium to travel through because it requires the vibration of particles to travel and there need to be particles to vibrate for it to travel through.
Vacuum
Yes, any electromagnetic wave can travel through a vacuum.
sound can't travel through a vacuum. or a place without air.
The vacuum becomes no longer a vacuum.