Here is some Vids of thermo/infrared and what you see/ how they work...
https://www.youtube.com/watch?v=fpx7hsoYEt4https://www.youtube.com/watch?v=unZJR02bPIU&list=PLQJW3WMsx1q3VRcPYRONDLBaAcMn3YNu3&index=49https://www.youtube.com/watch?v=eF6jqS7h1pA&list=PLQJW3WMsx1q3VRcPYRONDLBaAcMn3YNu3&index=46https://www.youtube.com/watch?v=BZPZfrgbkUQ&list=PLQJW3WMsx1q3VRcPYRONDLBaAcMn3YNu3&index=47and a more entertaining, longer view of a thermo camera and the human body..
https://www.youtube.com/watch?v=zj3hJSlK3Nk&list=PLQJW3WMsx1q3VRcPYRONDLBaAcMn3YNu3&index=48Remember, all that gear does is improve your chances to use a skill successfully, you still have to use your skill, and can fail for just the simple, mundane reason of "they rolled better then you"... -Now, the gm might add some fluff in there about
why you failed, and that may not make sense to you... So its important to know what exactly happened...
After all, if you only rolled, say 2 successes, and the NPC rolled 3... "I see you..." (or smell you, or feel you, or sense you)
@SSDR
So first of all, the difference between heat and "visible light" is merely a minor variation in wavelength. They're both Electromagnetic energy. At a certain wavelength range (700 to 400nm), EM energy is perceptible to the human eye and we call this range of wavelengths "visible light". Just offscale-high is Infrared, aka heat. When the EM energy gets slightly higher frequency than what we perceive as Red, it's what we call Infrared. Real live and in-universe unaugmented humans can't see IR, but all it is, afterall, only a color adjacent to Red that we simply cannot visually perceive. Visually perceiving IR is literally no different than perceiving EM energy in the ROYGBIV spectrum. IR is just another letter to the left of "R" in ROYGBIV.
All true. But an important detail here is that Thermal radiation (basic heat generation, either through metabolism, kinetic release, EM transmission) all still obey the laws of thermo dynamics. (Important later). And it is this Thermal radiation that is the source of the EM wavelength. So while you eye and the normal visible spectrum is only visible due to the reflection and refraction of light off a surface; It is the thermal source that the is the source the transmission. Basically, when looking at the body, you are looking at the sun, instead of the reflected rays from the sun bouncing off and object and refracting into your eye.
For the
Sleeping Tiger Chameleon suit to do as you are suggesting, it would have to due either 1 or both of 2 things.
1: it would either have to COMPLETELY seal the human body in a thermo reflecting material, as to not allow the thermal signature to bleed through the outfit, and allow thermal image presented by the now infrared spectrum casting cameras to "paint" the suit. And... the person inside the suit roasts to death from heat exhaustion in about 1 hour because he now has no way to dump his body heat (as it is now contained in the suit)
2: Super cool the body to the exact point of room temperature to allow the cameras to then "paint" the suit in the correct thermo pattern to match the area.... which implies there is A LOT more to the suit then the write suggests. What is this cooling material? how is this cooling achieved? (Laws of thermodynamics again)... The 2 basic ways this could work would be to increase the surface area by a factor of 1000, or through the use of a Peltier device. There are problems with both of these. If you increase the surface area, that means you need a LOT of extra material... think a 4 week old baby in Fat Albert's cloths. If you go with Peltier style, then you need both power (a lot of it!) and you end up with
very bright spots where the Peltiers are... (and considering the level of heat to dissipate, these would be akin to spotlights on the Thermal graphics)
This would also lead to hypothermia very quickly as you are dropping the surface temperature of the human body by 20 degrees for an average office area (98 to 72). Or even frostbite for colder areas (say, a refrigerated Server Vault, or fall/winter outdoor use)
I just don't see the
Sleeping Tiger Chameleon suit, as it is written up, to be a hindrance to Thermographical sensors. Now, that is not to say that thermographic beats the good ol' sneak test.... just that I don't see
Sleeping Tiger Chameleon suit as a benefit here.
edited for spelling and Chameleon suit.