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At the point of focus, with a good focusing tool, the infrared beam is strong enough to set paper on fire.

The rock glittered in the infrared beam her helmet lights gave off.

Other embedded sensors project two infrared beams over the road that are used to time traffic and determine its speed.

These three cameras, I should point out, all have active (infrared beam) automatic focusing.

This breaks the infrared beam and reflects light back to the projector.

Participants had to aim the cellphone at the reader in a certain way for the infrared beam to be picked up.

In response came the glare of the pinkish light, sent out by the infrared beam.

On the other hand, don't "ask" the Genesis to focus through a window, since its infrared beam will merely bounce off the glass.

Wave an arm anywhere in the path of its infrared beam, and it shuts up for eight minutes.

At the low level of energy needed for networking, researchers say, infrared beams cannot hurt the eyes or anything else.