One of these closed the article with the following: "Because, above and under water metal objects reflect waves, this invention might have significance for future warfare."

An antenna reflector is a device that reflects electromagnetic waves.

On ultrasound, fat is more echogenic (capable of reflecting sound waves).

The movement of the blood reflects sound waves to a transducer.

All of Milch's endeavors reflect waves in one form or another, and are deepened by the expansive, complicated life that created them.

The structure will reflect waves entering its opening directly back to the source.

Another use is to produce pictures of an unborn baby by reflecting ultrasonic waves off its body.

In other words, Echogenicity is higher when the surface bouncing the sound echo reflects increased sound waves.

When a standing wave vibrates its physical components, the incident and reflected waves, interfere with each other.

Ultrasound uses reflected sound waves to create a picture of organs and other structures inside your body.