physical
By fuwenxiang
@fuwenxiang (18)
China
October 17, 2010 5:36am CST
At present,i have suffered in a big trouble that i had met in my experiment.The question is that i wonder to figure out the fundermental mechanism of the react between infrared light and inorganic materials.I faithfully wish some one who knows about it can help me out!Thanks!
2 responses
@owlwings (43910)
• Cambridge, England
17 Oct 10
Infrared light is what we call 'heat energy'. If you apply infrared light to something, it will absorb the energy and raise the temperature of the substance.
Heat, in the form of infrared energy is also given off by a heated substance. Just as with light, there are different frequencies of infrared. Glass (and other things, such as carbon dioxide) is transparent to higher frequencies of infrared but opaque to the lower frequencies. This is the main principle behind greenhouses and the 'greenhouse effect': the sun emits high frequency infrared which is absorbed by the earth and re-emitted as low frequency infrared which does not pass back through the glass (or the carbon-dioxide layer of the atmosphere), resulting in a net heat gain.
@fuwenxiang (18)
• China
18 Oct 10
firstly, i express my thanks to you honestly!Though you were not answer my question directly,l have learnt some a lot form it.What i greatfully wonder is the react between the particles(like the photon and guantum ),why the inorganic materials can absorb the infrared light and reflect,also transparent?the equal questions in ultraviolet light?
@academic2 (7000)
• Uganda
17 Oct 10
Dont even start on these subjects, because the reason fled out of my science class was stuff such as those the infarred and the like-they have no place in my brain-am sorry pal
