PRINCIPALITY BLACK

Principality Black is energy conservation laws at transfer / conversion of energy conservation heat at transfer of heat is measured first time by scientist English which so called Joseph Black which then is recognized by the name of principality black.

Joseph Black measures specific heat an object by putting down an object in the situation terminal contact with other object which its(the specific heat.

Heat energy conservation laws

Joseph Black measures specific heat an object by putting down an object in the situation contact is mall with other object which its(the specific heat have been known. Takes example object which will be measured its(the specific heat having mass m1, and has initial temperature T1. a hydrogen having mass m2 which temperature initially T2 placed in a glass, and placed in a closed system, so-called calorimeter. Object m1 is plunged into hydrogen, and mixture temperature Tf both noted. Because calorimeter is system closed, there is no secretory heat or admission from dank e in this system. The many absorb heats by cool object ( in this case object m1) ê Q1 equal to the many free heats by hot object ( hydrogen) ê Q2. thereby is obtained that

This equation called as heat energy conservation laws, or of black is expressing that absorbed heat equal to heat discharged. If expressed in mass m, specific heat c, and temperature change ê tee, Equation ( 719) can be written as :

m2 c2 ê T2 = m1 c1 ê T1

m2 c2 ( T2 - Tf) = m1 c1 ( Tf - T1)

analogical this is specific heat an object is determined. Need to be noted that heat energy conservation laws valids for closed system.

Principality sound Black is :

And according to principality black that :

" Heat discharged to a system, equal to the system absorbed heat"

And according to principality black that :

" Number of absorbed heats by matter equal to number of free heats by the matter"

Mathematically principality black can be formulated with :

free Q = absorbent Q