Why do ghost hunters use infrared thermometers since they only measure surface temperatures, not air ?

Question

Why do ghost hunters use infrared thermometers since they only measure surface temperatures, not air ?

Answer 1

Yeah, that seems like an irrational way to "ghost hunt"...

Answer 2

They measure ambient temperature that is why they are used on moving parts. Your statement is inaccurate. A little research on your part would have shown that they do accurately indicate the air temperature up to 30 inches in front.

Below is the link for information.

Answer 3

IR thermometers are a lot cheaper than Doppler Radar.  Remember, the average annual salary of a psychic-twinkie is about 59 quid.