Helmholtz Free Energy in Thermodynamics | in HINDI
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- เผยแพร่เมื่อ 13 มิ.ย. 2017
- In this Physics video lecture in Hindi we explained and derived Helmholtz function or helmholtz free energy of a thermodynamic system. Helmholtz free energy and Gibbs free energy are two important thermodynamic potentials. By definition Helmholtz free energy is the internal energy of the system subtracted by the product of its temperature and entropy. F = U - TS. Its change gives us the maximum work done by a thermodynamic system. During the derivation of the equation for work done we found, the work done is maximum when the change is isothermal and reversible. W ≤ Fi - Ff. Further we will use Helmholtz function in Maxwell's thermodynamic relations.
फिजिक्स के इस वीडियो लेक्चर में हम बात करेंगे Helmholtz function पर |
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Arijit Daripa
EduPoint,
Dam Road,
Chandil,
Dist- Seraikela-Kharsawan,
Jharkhand,
India.
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First of all thank u and solut to your teaching method .The thermodynamics teacher should the topic like this in short I have no words for you ....
Sir as you derived two equation.. One for isochoric and one for Isothermal but actually in helmholtz function we had all ready assumed temperature to be constant.. Then in isochoric case temperature also will be constant
Thank u so much Sir for ur awesome thermodynamics series.
You are awesome sir.💐💐💐💐
Thank you sir ,very first thing i learnt from this video is pronunciation
Sir, you are considering isothermal system but still taking dU. Why? It should be zero right? And if not isothermal then how come integration of TdS be TS?
As always you make me smile with delight of your knowledge
Well explained.... thank you so much sir😊
Nice explanation Sir, thank you so much
Thanks sir 😊 I refered many books but still couldn't get physical significance but you gave a wide view.
Please tell me which Book you used . I'm using zeemansky but still not satisfied
Sir.... Clausis inequality is cyclic intergral of dq/dt
Sir, delQ=dU+delw to isothermal k liye nhi hta hay? Fir hum keu aysa likh rhe hay..ager isothermal nhi hay to hum integration k time T Ko cont keu mn rhe he fir..thori sir confusion hay..baki u r great sir
Very much helpful,
Thank you very much.
The very moment I am so thankful to my parents that they are fluent in Hindi. As a German kid with rudimental Hindi knowledge due to my parents, I did understand everything in that video, because of the combination of simple hindi+complicated English+maths+pictures.
sir plz answer
For a thermodynamic system, Helmholtz free energy is a function of :
@Edupoint
best demonstration
sir without temperature difference how heat flow is possible between surrounding and system?
Sir plz upload the video on flame and explosion temperature
Namste sir, please make a video on clausius inequality & gibb's free energy.
Nice explanation
Thank you sir for your teaching
Thanks a lot this helped.
I gotta say, you explained it well. Thumbs up.
excellent video sir! can you make a video on gibbs free energy?
sir, system aur surrounding dono ka temp same hayn to heat transfer kiu hoga?
Thank you for explaining sir
if the process is isothermal, we should have dU=0??
Thanks sir.
Thanks and sir what r the characteristics of thermidyanmic potential
Sir your video style content explanation everything great but your video link page is very unlikable that's why I entered your link after watching other videos, sir please make that link page little different and attractive, your video was great,
Awesome
Respected sir
In future if I want to prefer any chemistry or physics teacher I would like to prefer you so can I get any preference contact of yours
Thank you
Sir why du is not zero as temperatue is constant
Sir plz upload a video on kinetic theory of gases
sir g kam kon kare ga helmholtz function ya koi external agent
Thanku sir
Hi sir, which software do you use to make these videos, more specifically writing software.
Hello robodevil machinist !
For writing I use SmoothDraw 4.0.5.
For recording the screen I use CamStudio 2.7.
Both of them are free of any cost.
And as always .... thanks for following us.
@@edupoint.physics As always thanks for following us , inspired by Vsauce 😁
but sir in isothermal process the change in internal energy is zero
Could you please make the English version? I really need it ;(
Kya antropi reverse ho sakti hai
Thanks
Great help good video sir
Sir aap aisa batate hai ki lagata hi nahi physics complicate hogi.
Why we are not using dQ=dU-dW???
Hello sir,
I have a question.please explain .
in derivation of F we use TdS =dU +dw
And in the derivation of F isothermal change has considered. And for istohermal process dU=0
Then why using dU in the equation?
exactly, I have the same doubt, dU should be 0
I have the same doubt
for isothermal process dT=0 not the internal energy
joule Thomson cooling ek video banaaye,sir
How can heat flow at constant temperature? ...and please also give the physical significane of last two relations
all heat is converted into work
Bahut he accha samjhte haa sr jii
+Sharma Sushant
Thanks for your encouraging words.
Your good wishes do everything.
For isothermal process the change in internal energy is zero. So why can 't we avoid the du??
That is for ideal gases only
Entropy is also a func of V
Thank you sir , please upload more videos of B.sc physics
Hello Set Tech,
You are welcome.
Aap sab ki duao se hi ye channel hai.
Sir, If both the system and the surrounding is at temparature T then how some heat dQ can flow into the system
It should be different temps in system and surrounding but not changing like in the concept of hear engines and refrigetors/air cons.
Sir tharmal physics ka achha book batati sir bsc ke liye
sir how heat Q enter into the system as system and surrounding has same temperature?
Isothermal process... Heat added but temp remain constant while increasing volume
Bcoz for isothermal condition,the rate of heat transfer must be infinite
sir ek video polarization of light per bhi banaaye
+Shrikant Awasthi
Coming soon....
Which Softwere you use sir...
Hello Anwar Sajjad !
For writing I use SmoothDraw 4.0.5. It is like MSPaint, but better than that.
For recording the screen I use CamStudio 2.7.
Both of them are free of any cost.
And as always .... thanks for following us.
Thankyou sir for your time
I used your video to teach my daughters.... They are really understandable.
Sir Gibbs free energy bi bujhei diontu plz sir
sir class 12th ke lenz ka rule batiye aur uska video banaiye
iseme khas kar current flow of direction bataiyega
+Jacks sparrow Raushan
Zaroor !
Coming soon.
sir bsc 2nd year ke liye geometrical optics pr vedio banaye
+nishika Gupta
I shall try.
It is as similar as Gibbs free energy
What is the significance of TS
TS has dimension similiar to Energy/Work done like PV or Pdv.
Sir thermodynamics me hemholtz free energy ki jarurat q padi
May be to remove umcertianity.
Plz ans mevariation of helmholtz function /work function with temp &volum plz ans me fast plz plz ans me
azra firdos
Need a video to explain.
Coming.
Sir Gibbs energy yhi hai kya
Manoj Jangde no
But what actually helmotz function is?
F=U-TS
U- Internal energy
TS- unavailable energy due to entropy
So, (U-TS), that is F is the effective internal energy or effective free energy or simply free energy that takes a special name "helmholtz free energy".
When a gas (or a system) does work itself on its surroundings ; it uses this energy so it is reduced.
I.e W= - (Fi - Ff) = - delta(F).
Have a nice day😃
***Correction .
W= - (Ff - Fi) = - delta(F)
@@nasiruddinsk3462 what exactly do you mean by unavailable energy. If a gaseous system has temperature T and entropy S then why does TS represent unavailable energy? We can put a piston on the gas beaker and can ideally extract all of its internal energy via expansion.
@@nikhilnegi9446
It has been 2 years still i got a notification! Quite surprising.
Ok, come to the topic.
According to 2nd law of thermodynamics, "You can't make a heat engine which is 100% efficient i.e you can't convert heat into work done with 100% efficiency even by a reversible heat engine/ process. This rule has been set by Nature . According to nature, every natural process will choose a "direction" which must increases the entropy of the universe hence decreases 'available energy' to perform more natural process.
One day, there will be no free energy available to perform any natural process i.e universe will be dead (since nothing is occurring due to unavailability of Energy).
This is called "Heat death" of Universe.
Okay, good evening my friend.
Where is the Gibb's Free energy????
Usko chor gai?...O wala concept nahi ata???
Ĥĥ
sir ap bahut deeeeeeeeeeeeeeeep chale jateho
Hello chhetarpal singh !
Your support is very encouraging.
Thank you.
God bless you.
is this English? i doubt!!! why have you posted it under English language? this is frustrating with indian people....
Dude..there is already mentioned that the video is in hindi..angrez kahin ke..
@@botanyplants9661😂
I have doubt can I get whatsapp no.