Infra red Definition and 14 Threads

Hello everyone! does anybody know How can I calculate a distributed radiant flux of an IR source in a space? Is there any software or something?

Hi I want to make a infrared nonimaging concentrator, but since crystals needed for lenses are difficult to work with for an amateur, want to use liquids. I am interested in the 1-12 micron spectrum; what liquids could i use?

Glass allows visible light to pass through I would like to find a list of materials that allows lights of different EM spectrum to pass through, not just the above, Searched throughout google, couldn't find any!.

Sooooo... I have a Far infrared (FIR) sauna. It has large flat 'carbon' panel heaters. They get warm to the touch and won't burn you if you touch them. My non contact infrared thermometer zapper says that they get to about 70 degrees C. They are meant to be producing lots of FIR. A regular...

I heard that snakes can see infra red waves and e.g. bees can see ultra violet light. so... infra red = heat = snakes have heat vision? and do bees see ultra violet as a color? if yes, does it mix with other colors or is it like a filter?

Hi, I need circuits for an infrared transmitter and receiver. i need to use 38 kHz square pulse please guide me as early as possible...

the name says everything...but i want to know which metal is the besst to create infrared frequency and how far can it travel,bounce n come back with a detectable intensity? i know the 2nd question is stupid coz we r talking abt em wave they don't get absorbed in medium but they do get...

Do infra red rays spread out or do they work the same as lasers and fire in a single ray? Example if I have the emittor at different distances from the object it is scanning (e.g a ground surface say 10mm and 30mm distances) do the rays spread and further to cover a wider range, or do they...

Its common knowledge that infra red radiation heats up an absorbing solid surface. That is,the em radiation energy is converted into translational KE of the particles of the solid. What happens in the case of an isolated CO2 molecules absorption? Can the EM energy be converted into increased...

I've seen much mention in websites of matt black surfaces being better emitters of infra red than shiny silver ones so if a matt black and shiny silver surface are heated to about 100 deg C the black one will cool down more quickly as a result of this! Doesn't Wien's law state that the amount of...

So, I always thought that NIR was created by the motion of atom at they're everyday temperature, but light is an electrons which goes from one energy state to an other, so how does just "shaking" electrons make light?

Hi, Im investigating how infra red is affected in different areas e.g at home, out side, in the dark or in light. To do this i have made a circuit with a photodiode from the company rapid. The problem is that the photodiode is operating as just a switch, saying if the infrared is on or off so i...

Does anyone know how to make an infrared port for a board camera to transfer video to a pocket pc, the camera is analog with RCA output.

Hi there, I have a question about his experiment. Herschel discovered IR by placing the blacken thermometer next to the red light (out from the prism), since he noticed the TREND OF INCREASING TEMPERATURE proceeded from BLUE (lowest temperature) TO RED (highest temperature). So he wanted to...