Recent content by carter7gindenv

This is something that has always been a bit badly explained to me but you broke it down very nicely thank you!

Thank you all for your participation it really helped me to weed out some of the bad starting hypothesis I had! I've read a bit your extended discussion and I'm really happy that my interrogation sparked other curiosity! Cheers!

ooOOOOooh So it means that the output flux is not dependent on the input flux? Doesn't that contradict Kirchhoff law of thermal radiation? I made another post days ago here where my problem resided in my confusion of emissivity/emission/emittence and Absorbptivity/absorption/absorbance. I think...

That was what I feared. I feel like online documentation often confuses those terms. And I believe it is also the source of my confusion in my other thread here. I will try to find more information about those 4 terms thank you very much!

I do. I'm visualizing it in a similar way as photon absorption by electron which rises their energy state until they release that photon at the same wavelength (except for when they do it with a step) I admit that it is hard to put in text what I have in my head. Maybe I can state it...

This bother me too much. A black body is said to absorb every incoming radiation. Looking at absorptance we have : A=Φabs/Φreceived So if a Black body absorbs everything we have A=1 Φ is a flux meaning object/time. This means that whatever the wavelength a black body will absorb the maximal...

Hello, I'd like some clarification with the exact wording of Kirchhoff's law of thermal radiation. The law states that at thermal equilibrium αλ=ελ. However sometimes I read that absorptivity= emissivity and sometimes I read that rate of A. = rate of E. Which one is correct? I'm not sure but I...

Thanks for the help. I tried it but it was a bit above my level. On another article i found that th is actually the time when the heating is turned off. t seems to be either the amount of time until heating is turned off ( because apparently writing things consistently is for kids... ) or just...

Thanks I think I got it.

Hello, I've searched a bit about about the thermal radiation behavior of non-black body and I'm confused. I've read that the color is dependent only on the temperature so every thing display the same color as a black body. But at the same time I've read that materials don't always follow the...

Hello, I'm working with a thermal property measurement tool (KD2 pro). The manual provide the equations used to measure temperature but I'm not sure that I understand them correctly. Temperature during heating (equation 1) T= m0 + m2t + m3 ln(t) Temperature during cooling (equation 2) T= m0 +...

Hi I'm going to use a light based source of heating for a science experiment at my university and I'm a bit confused. Sometimes the names infrared (IR) lamp and heat lamp are used as two different thing and sometimes not but I can't find clear info about it. Is there a difference? thanks in...

For what I've read it's thermal diffusivity which describe the time need for an object to reach thermal equilibrium?

Hello, I'm slowly getting crazy about this stuff. I'm trying to understand what are thermal inertia/effusivity and information have been incoherent so far. The best example of that is seen on wikipedia where the only mention of thermal inertia is in the article...