Recent content by douds

I try to make a formal system to appreciate the impact of additionnal energy Q' on a black body radiating Q. The real bodies have a mass, how would you articulate the two equations for the same body? deltaQ/Q=(1+(deltaT/T)^4)-1 Q'=m.c.deltaT' because I initially believed that it was...

Ok, if the system is at a temperature T, it radiates Q by stefan's law if we have T+deltaT, it will radiates Q+deltaQ where delta is 0.028XQ. if now, we had thermal energy Q' to the system, with Q' <Q, (but notQ'<<Q), only one part of Q' will be lost by radiation, an other one goes in stock...

thermo equation yes, "a" is a constant grouping sigma, the emissivity coefficient; A, the radiating area and k, the Boltzman's constant of the system. Now listen, let's assume we add Q' to our system where Q' is different of delta Q, but Q'= l+M+N+O+delta Q, where deltaQ appears in equation...

thermo equation thermo equation "“The theory, it is when all is known and that nothing functions. The practice, it is when all functions and that nobody knows why. Here, we joined together theory and practical: nothing functions… and nobody knows why! ”

ok, thank you for the mistake Now in other words: 0.028068 of Q is enough to drop temperature of 2°. Comment the physical interpretation of this equation? If the temperature of a black body is at the temperature T, the radiated energy is Q. If the temperature increases of 2K then the...

stefans'law ok for the response Stefan' law : Q=a.(T^4) (1) not nul for a system If Q is augmented of deltaQ, in the system, is it legitime to write that equation (1) becomes Q+deltaQ= a.(T+deltaT)^4 (2), deltaT being new equilibium's temperature? If yes, It follows then by...

Stefan' law : Q=a.(T^4) (1) not nul for a system If Q is augmented of dQ, in the system, is it legitime to write that equation (1) becomes Q+dQ= a.(T+dT)^4 (2), dT being new equilibium's temperature? If yes, It follows then by dividing (2) by (1) member to member, then ...

May somebody tell me something about this equation ? dQ/Q=((1+dT/T)^4)-1 What is it possible to do with? Signification-Integration-ploting Sorry for my english tank's