WHAT IS THE FIRST LAW OF THERMODYNAMICS ?

FIRST LAW OF THERMODYNAMIC ENCOURAGED BY -

"the law of conservation of energy".

which have its own importance but when we go deep further in thermodynamics we confronts the prodigious truth that work and heat are not energy .

"they are the media by which you can transfer The Energy ".

FOR COMPLETE PROCESS OR FOR CYCLE -

heat as input for a system completely transfer's into work or vice-versa.

- this abbreviated as

SYSTEM-A

J (ΣQ)cycle = (ΣW)cycle

where J is the mechanical equivalent of work , and this work and heat remains conserved in thermodynamics system .

"algebraic sum of WORK (W) and HEAT (Q) will be zero " .

FOR INCOMPLETE PROCESS OR FOR CHANGE OF STATE -

when input heat or work is not fully converted into its corresponding form .

than the input conserved into the system in the form of energy represented by ΔE .

SYSTEM-B

its your will to take sign convention's as per your choice throughout the process but make sure you are using them correctly during mathematical operation's .

Here we are taking input as +ve & output as -ve ,

So the mathematical expression will be ,

" Q - W = ΔE "

"This is the first law of thermodynamic" .

Comments

SUM OF INFINITE SERIES BY RAMANUJAN

I n this blog i am going to discuss about something very strange important but strange a master piece from a Indian mathematician Srinivasa Ramanujan , who who discovered something mind blowing . So if i ask you what is the sum of all natural number more likely you will answer "infinity" and like always genius personalities has something different opinion just like srinivasa Ramanujan . Lets see how 1+2+3+4+5+6+7+8+9 . . . . . . Became -1/12 Let's take a infinite series S1 - S 1 = 1-1+1-1+1-1+1-1+1-1+1 . . . . . . lets do little maneuver with it like we always do in mathematics - S1 = (1-1)+(1-1)+(1-1)+(1-1)+(1-1)+(1-1). . . . . . we are just taking brackets at first on "plus one" and than closing it after...

DIFFRENCE BETWEEN HEAT AND WORK !

H EAT and WORK plays vital role in thermodynamics. Its very common misunderstanding between peoples that they are ENERGY but they are not energy they are medium by which we transfer energy . although they d on't seem to be identical because heat is thermal property and work is mechanical property but they are same , at microscopic level they both are same phenomenon . HEAT They are just moving of molecules , having difference is only , heat is moving of molecules disorderly in any direction OR in other words heat is microscopic collision of molecules . WORK Work is moving of molecules in only single direction OR in other words work is m acroscopic push and pulls ( given by product of force and displacement ) . both shares same SI unit as JOULE . We termed work as high grade energy and heat as low grade energy Because in reversible or irreversible process we can convert work 100 % in heat ...

WHAT IS LIGHT EMMITING DIODE ?

LED is a very commonly used device nowadays we use it in various application because of its small size and,cheap prize its very popular among peoples . we use it even in special television set for screen as LED pixels which is useful for clarity for distance audience . basically it is a diode which is set to be in forward condition . Full form of LED is LIGHT EMITTING DIODE . As evident from name it is diode who produce photon when voltage is given to it . this type of diode is not made by generally used semiconductor's like silicon and germanium it manufactured by arsenic phosphorus and gallium . various types of color can can be produced by changing quantities of material it made up of . WORKING - Basically it is like a normal diode just difference with it produces light when a forward voltage applied to it . as we know electron needs energy to jump from lower orbit to higher orbit , the working of LED is typically reverse of this process electr...

Elixir vault

Search This Blog