unitepy.py

Created on May 10, 2023
784 Bytes
Unité thermique :

C = candela
N = qte de matiere
rd = dose de radiation absorber
Sr = steradian

Pa = pascal
N.m^-2 = Newton metre carre 
k.m^-1.s^-2 = kilogramme metre par second au carre
atm = atmosphere (unite de pression)
bar = unite de pression
Psi = pound (livre) per square inch (pouce)
Torr = torricelli
mmHg = milimetre de mercure
mCE = metre de colonne d’eau


1 pa = 1N.m^-2=k.m^-1.s^-2
1atm= 101325 Pa
1 bar = 10^5

1atm=760torr=10,3mCE

rho_eau=1000kg.m^-3
rho_hg=13590kg.m^-3


1 psi = (453,6*10^-3*9,81ms^-2)/(2,54*10^-3)^2=6900 Pa

(1 pound=453,6*10^-3kg)
(1 inch=2,54*10^-3m)
(1g=9,81ms^-2)

Formule de conversion Celsius en Fahrenheit  (32F - 32) x 5/9 =0C
Formule de conversion Fahrenheit Celsius 0C x 9/5 + 32 = 32F

TK= TC+ 273,15
TC= TK- 273,15