Loi de Stefan

T
ϕ=σT 4
σ= 5,675.10−8W.m−2.K−4

∧ ∨

Text
Φray
∆T=T−Text
Pe
K
C
K
dt
dt dt ∆T d (∆T)
Pe
∆T(t) = Pe
K1−e−Kt/C 
∆T(t= 0) = 0
K/C ∆T18 s

C
1/K
I(A) Φ (W)
−→
j(A/m2)−→ j(W/m2)
R=ρL/S R =e/ (λS)K/W
λ= 1/ρ Ω.m λ K.W −1.m
U V T K
−→
E V/m)−−→ ∇T K/m
C Coulomb.V olt−1C J/K
q C Q J
P=UI W att
Φ
α µV/(W/m2
α