1.   If the windshield is dry, the beams bounce off the glass into a matching row of eight detectors on the module.

2.   In his prototype spectacles, a low-intensity infrared laser beam bounces off the back of the retina and into a sensor through a deformable mirrored membrane.

3.   Laser beams also bounce off glass surfaces.

4.   The beams can also bounce off walls to create an impression of the source of the sound.

5.   To read the cylinder, the helium-neon laser beam bounces off the hills and dales in the grooves of the cylinder, which alters the frequency.

6.   When the laser strikes a land, the beam bounces back to its source and is picked up by a detector.