1.   Although infrared light cannot be seen by the human eye, it can be detected by sensors designed to measure the radiation frequencies below the visible range.

2.   And though Laraio touches nothing, he is actually manipulating infrared light to play his music.

3.   As the eyeball moves, the position of the curve of the cornea changes, so the angle of reflection changes for the infrared light.

4.   Because infrared light is heat, dielectric mirror windows would insulate a room from the heat of day without impeding the view.

5.   Behind it is a light-emitting diode that is about the diameter of a ballpoint pen and gives off infrared light.

6.   Because infrared light does not travel through walls as radio waves do, a wireless optical system in one room does not interfere with one in another room.

7.   A laser shines infrared light through the cables.

8.   A video camera installed below the table maps the shapes from the infrared light reflected off the hands.

9.   After a bill is selected from a supply hopper, it passes over a beam of infrared light.

10.   But in infrared light, a glowing ring of light shines through the dust.