Recent content by eyad-996

Oh, alright, I finally understand it. Thanks a lot for you all. These questions have been bugging me for a long time. Sorry if I've caused you any trouble.

Could you help me understand this better. Here's what I got from it. At 3000k the wavelength of the radiation being emitted from an object peaks in the infrared part of the spectrum. We see the red color because at 3000k it has its highest intensity inside the visible part where the red color...

This is another thing I've wondered about. The color temperature chart. If the color emitted by Thermal Radiation corresponds to the object's temperature, or in other words, it's energy, and the higher the frequency, the higher the energy, an thus the higher up the electromagnetic spectrum the...

Light hits an object and gets reflected back to our eyes and we see its color. But it also emits Thermal Radiation, so technically it should be 'emitting' both of those light waves at the same time. When iron gets heated up we only see the red color being emitted because it got heated up. What...

Well then where/when did this 'conversion' happen?

I keep picturing a star every time I talk about Black bodies, how wrong is that?

So let me get this straight, a Black body absorbs the radiation of a certain spectrum and then re-emits it in a different spectrum with a different peak wavelength?

To determine the peak of an emission spectrum (I think I phrased that right!) You use Wien's Displacement Law : Peak λ * T = b where T is the absolute temperature of the Black body, and b is around 2.9*10^-3

So the radiation they emit is not within the visible spectrum, correct? On whatis.techtarget.com They defined a Black body as " a theoretically ideal radiator and absorber ". Doesn't that contradict with what you said about black bodies not reflecting any radiation back? In other words, how...

I'm having the hardest time understanding Black bodies. I have a lot of questions about them so I can't write all of them, instead I'll just start with : Why are stars considered black bodies?

I feel so stupid. I should have mentioned that I'm a student in high school, I don't know much about physics, I just really really like it ! You shouldn't explain again, I'll do more research, if I had any questions Physics Forums will be the first thing I go to.

Oh, OK. So a non-photon object moving at the speed of light has no mass, but photons have infinite mass?

The two answers gave contradicting answers!? The second answer gave an interesting information about resistance building up until it reaches near infinity, if the first answer was the correct one how do you reply to the building-up-infinite-resistance answer.

An object moving at the speed of light will be mass-less or will it have infinite mass??

Thanks, great answer!