Tomanbeg
Posts: 4385
Joined: 7/14/2000 From: Memphis, Tn, CSA Status: offline
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Originally posted by tohoku [B] It was infrared, not UV. It could not see through smoke, and certainly not through vehicle-generated smoke (as the Russians did with sprayed oil/fuel over the exhausts). Even modern systems have almost no ability to see through vehicle-generated smoke. tohoku YMMV [/B] Maybe yours can't, but the Abrams can. so can the FLir's mounted on AH's. I think it is called "Raliegh scaterring" http://explorepdx.com/ir.html For those to lasy to click, It's all part of the electromagnetic spectrum. What your eyes can detect is called visible light. What your skin detects is infrared. For your eyes to 'see' something, radiation in the visible range has to bounce off it. The difference in frequency between what bounces and what is asorbed is what provides color(sort of, it will do for now. If you want precision, look it up). IR depends on something different. One of the Laws of thermodynamics is that the universe is trying to get to an even temperature(I forget which one, it's been almost 30 years). So warmer objects transfer heat to colder objects(think of why the old lady puts her ice cold feet in warm spots on your body). That transfer is by electromagnetic radiation in the infared range. Modern equipment is sensitive enough to detect the difference in air temperature over a human hiding behind something. The Advantage of IR is that all living thing put out heat. Some dead things do also. While modern smoke generators include heat producing elements, they burn at a different temperature(put out IR radation on a different frequency) from the targets that they want to obscure. This means that they can be filtered out(Like radio stations, All the stations are filling the air at the same time, but your radio is set to just pick up one at a time). Plus the burning elements in the smoke don't stay in the air as long as the smoke. So the new smoke screens will only work against old gear. In the Gulf war the IR gear was good enough to pick out hot gun barrels at 3 km's. Some smart Iraqi knew his night fighting and was laying doggo without engines running and the hatches closed. He had land lines laid to control his platoon w/o broadcasting and was group firing at the muzzle blasts of the Abrams. He's dead now. His hot tube gave him away. T.
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"The 15th May, 1948, arrived ... On that day the mufti of Jerusalem appealed to the Arabs of Palestine to leave the country, because the Arab armies were about to enter and fight in their stead." – The Cairo daily Akhbar el Yom, Oct. 12, 1963. [IMG]http
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