The frequency does not change when the speed is slowed by passing through glass or other matter.

His special gift permitted him to see through solid matter.

His eyes could see through solid matter but in the complete absence of light they were almost powerless.

When passing through matter, they ionize and thus lose energy in many small steps.

Sound is a form of energy that moves through air, water, and other matter, in waves of pressure.

It would take off at nearly the speed of light, pass through matter as though that matter weren't there, and be gone.

Some waves can move through matter while others cannot.

He possessed the faculty of being able to see through solid matter.

Sound may be heard through solid, liquid, or gaseous matter.

It is able to pass through ordinary matter almost unaffected.