Pierre J. Proudhon was strip-searched in Waverly, AL for writing in part:

The results are different if you spent any time using IR film. All
Infrared film is sensitive to both some Infrared and visible light.

Digital IR photography typically relies on reflected NIR from sources
like the sun and incandescent lamps. Digital camera sensors based on
silicon are not sensitive to the far (thermal) IR wavelengths (typically
3.0µ and longer) emitted by objects at room to body temperatures.

Many of us are already well aware that:

1) a silicon detector needs refrigeration to effectively image IR beyond
near-IR.

2) near-IR photography relies heavily upon primary illumination from a
strong source such as the Sun.

3) an 89B-ish filter with any digital camera, converted or not, is
unlikely to be used in thermography.

....

I can go on but you bore me.

MISSION ACCOMPLISHED.

--
It Came From Corry Lee Smith's Unclaimed Mysteries.
http://www.unclaimedmysteries.net