Recent content by PytrTchaikovsky

It could be, where did you get that formula from? However, I think that the area of the object will matter, so I think that should be included.

Sorry for being unclear, thought I should make this as general as possible but I'll be more specific. I want to calculate the total amount of joules being emitted from an object with a non-constant temperature. If you have a stove for example, you can calculate the total amount of joules being...

Where M is thermal emittance? And c is specific heat? If M is thermal emittance, which thermal emittance? Since it is changing? Thank you

Dear forum I am working with thermal radiation. This is the specific formula: P = σ ⋅ A ⋅ T4 P = emitted effect (W, J/s) σ = Stefan-Boltzmann constant (5,67 ⋅ 10-8) A = area of object (m2) T = temperature of object (K) How can I get to know the...

Found this lecture from MIT, touched the subject a little, but went more to chemistry. http://ocw.mit.edu/courses/chemistry/5-60-thermodynamics-kinetics-spring-2008/video-lectures/lecture-1-state-of-a-system-0th-law-equation-of-state/ Also: I feel like air of a certain temperature higher than...

Thank you very much. Damn this is complex. Thought it would be like putting water on the stove and calculating when it will boil. Is it possble to calculate all of this theoretically, without experimenting? Are there any formulas out there? Tried looking all this up on Wikipedia, found this...

Let's say I have a cold bottle of water in a warm room (temperature is constant). Is it possible to calculate how long it will take for the water to reach a certain temperature? Do you guys know any formula for this? To be more general: What is the effect (W, J/s) that air in a certain...