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Infrared or IR is the name for light outside the human-visible color-light-spectrum just below red. It is often used as a means of wireless line-of-site communication such as a TV remote control.

Many electronic optical sensors such as CCDs found in web cameras, are very sensitive to IR light, but have a filter in place to filter it out, so it will look more like what the human eye sees.

Fortunately, this filter is often easily removed from inexpensive web cameras as in this example.

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NOTE: All information contained within this article is pure opinion. Although this article is intended to help people, it may contain faulty or misleading information. This article is not to be considered professional opinion or advice, and is in no way a replacement for reading all safety/instructional documentation. Always remember to protect yourself when handling/using hazardous materials, as well as test new techniques before using them on projects/work intended to be handed in or used.

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