Callender and Barnes | Mechanical Equivalent of Heat | Experiment & Practical File
Рет қаралды 48,975
4 жыл бұрынThis video covers the all the experimental details about the Callender and Barne's method to calculate the mechanical equivalent of heat.
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Find Practical File (Lab Manual) Link at the Bottom
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Practical File Link -
Link to all Categories of Practical file (Mechanics, Optics, Thermal, & E&M, etc.)-
alllabexperiments.com/physics...
Link to Thermal Lab Practical Files
alllabexperiments.com/phy_pra...
@AllLabExperiments 4 жыл бұрын
Hello guys! Thank You very much for watching this video. Please give me suggestions about my future videos... :-) ==> You can also "Like" us on facebook ==> facebook.com/AllLabExperiments
@Parul-ch7du Жыл бұрын
Can u pls tell us how to find log error of it .I can't find it on whole internet.....🙏🙏
@albertkujur772 Жыл бұрын
Legends are watching one day before exam.
@palakagrahari2019 Жыл бұрын
Us bro😂
@madhumitapaul3583 Жыл бұрын
2 hours before exam🥲
@shubhankarbarman8047 Жыл бұрын
Bhai 2din bad hi exam hai 😅
@samikshajoshi6823 7 ай бұрын
1 hour before 😂😭
@alkamamd9750 7 ай бұрын
Yeah I am a legend
@premsaboloradheradhe1025 Жыл бұрын
Thank you. Very very very helpful vedio. 👍👍
@_towards_destination 4 жыл бұрын
Thank you.. It was helpful 👍🏻❣️
@premsaboloradheradhe1025 Жыл бұрын
Sir Apnar vedio gulo ta, khubi valo bujta pari practical gulo.👍👍👍
@jaspalrawat4625 2 жыл бұрын
Most helping 🙏❤️
@tribenisharma7602 2 жыл бұрын
Thank you so much...great help
@icecoldab1743 3 жыл бұрын
Well explained video👍🏻👍🏻
@rupamraj551 3 жыл бұрын
Thanks😊
@pradeepkumar5_ 2 жыл бұрын
🙏 Thanks a lot
@ritikpawar5893 3 жыл бұрын
Thanks 😊
@munish6957 3 жыл бұрын
Very nice explanation.
@AllLabExperiments 3 жыл бұрын
Thankyou very much sir
@Breezybu555 3 жыл бұрын
What are the sources of error in this experiment?? Please share
@AllLabExperiments 3 жыл бұрын
This is a slow experiment so you have to keep patience when the temperature changes because of change in flow. the flow of water should also be controlled with delicacy super slow like an adiabatic process. the temperature diff between two thermometers should be equal for this experiment which generally students don't care but it is the core concept of this experiment Other than this, No leakage and proper connections are just some basic instructions.
@Instagram.Status 3 жыл бұрын
Sir, this experiment can be performed with AC SOURCE??. If yes, what the needy to be done with the apparatus and procedure???
@Instagram.Status 3 жыл бұрын
Sir, please🙏 reply.
@AllLabExperiments 3 жыл бұрын
No DC source so that it is easy to calculate dissipated heat. You can perform this using AC as well but then the expression would bea little different
@ajeymeena_ 3 жыл бұрын
Can you please make video that How to calculate log error of these thermal Experiment which you taught us . It's a humble request
@AllLabExperiments 3 жыл бұрын
I have made a general video on errors in which log error has also been included... For specific cases, it is just a matter of the formula of log error.
@ajeymeena_ 3 жыл бұрын
@@AllLabExperiments may I get link please.. Actually I'm not able to found it .
@AllLabExperiments 3 жыл бұрын
@@ajeymeena_ here is the link. It is related to error, least count least square fit type general issues kzfaq.info/get/bejne/Z8xxbKejts-6ZGg.html&lc=Ugx7TiEi4yp3g0_FatV4AaABAg
@Parul-ch7du Жыл бұрын
How to find its log error ....?
@ritikpawar5893 3 жыл бұрын
What are the other methods for finding the value of j?
@AllLabExperiments 3 жыл бұрын
Famous joule,s experiment and there are many can be designed
@ritikpawar5893 3 жыл бұрын
How can we increase difference in temperature without changing tha current?
@AllLabExperiments 3 жыл бұрын
By increasing the flow of water
@sahilabhi1297 Жыл бұрын
Thermal phy experiment need too much patience, it took 2 days to complete Lee's disc practical. And this too take
@AllLabExperiments Жыл бұрын
Need patience but not two days. Lee,s is the simplest among other thermal phy experiments. Juat heat it to its max quickly and then note thw cooling curve. And some basic things thats it
@ritikpawar5893 3 жыл бұрын
Can this exp be used for other liquids?
@AllLabExperiments 3 жыл бұрын
Yes it can be but we have to change the value of specific heat. In this formula we have used this for water as 4.2 Joule per K per gram. Just you need to change this value.
@ritikpawar5893 3 жыл бұрын
@@AllLabExperiments thank you
@mariasumeet2970 3 жыл бұрын
can you the readings of this experiment
@AllLabExperiments 3 жыл бұрын
Checkout the experimental file link in the description...
@ritikpawar5893 3 жыл бұрын
How do we apply a correction for the law of heat due to radiation?
@AllLabExperiments 3 жыл бұрын
generally we believe that the radiated heat is much less than the heat taken by the water coz from outside it is insulated to cause minimum error. 2nd we perform this experiment 2 times for different flow rates but same temp differences and then equate them. This over all ensures that the dissipation part cancels out from both sides of the equation.
@ritikpawar5893 3 жыл бұрын
Why the heating coil in the form of helix?
@AllLabExperiments 3 жыл бұрын
so that it can heat up the water tube most efficiently
@dipankarchetri3974 3 жыл бұрын
Can we use mercury instead of water??
@AllLabExperiments 3 жыл бұрын
Yes but that would be expansive and heavy...
@220sauravkumar4 Жыл бұрын
Sir you are like doobte ko tinke ka sahara
@ritikpawar5893 3 жыл бұрын
Why do we prefer constant flow method?
@ritikpawar5893 3 жыл бұрын
Reply plz
@AllLabExperiments 3 жыл бұрын
Coz we wanna assure equal heat taken all the time and only then the temp in thermometer 2 will be a constant
@theimmortal6447 2 жыл бұрын
Why should the flow rate be less than 1 cc/sec written in step 1??
@AllLabExperiments 2 жыл бұрын
Because it should get ample time to absorb the heat at very first place otherwise the results are not gonna be accurate.
@theimmortal6447 2 жыл бұрын
Thank you sir for you reply...I have one more question...what would have happen if we use AC source instead of DC source
@AllLabExperiments 2 жыл бұрын
@@theimmortal6447 then you have to take rms value of the current which is responsible for heating by definition...
@ritikpawar5893 3 жыл бұрын
How do we maintain constant pressure?
@AllLabExperiments 3 жыл бұрын
Your outlet is free and open so you need not to maintain pressure. It will remain constant by default. and the minute variation will not change anything because the used liquid is not that much compressible. If this experiment would have done with the gases then you this would have been a considerable issue.
@ritikpawar5893 3 жыл бұрын
@@AllLabExperiments thank you☺️
@yogeshsingh-fw6fv 2 жыл бұрын
Practical file link not working
@AllLabExperiments 2 жыл бұрын
Might be some issue with the link. Use this link and get all thermal practical files alllabexperiments.com/phy_pract_files/thermal/
@ritikpawar5893 3 жыл бұрын
Why temperature different should not more than 10C?
@AllLabExperiments 3 жыл бұрын
If temp diff is more than 10 degrees it means the wire inside is heated too much or the flow of water is quite low. In both cases, the dissipation of heat in its surrounding increases and which as a result increases the chances of error.
@AllLabExperiments 3 жыл бұрын
@UCsVapi_Iu6vx81_OnCzgoqQ My pleasure :-)
@ritikpawar5893 3 жыл бұрын
@@AllLabExperiments how the flow of water become low?
@AllLabExperiments 3 жыл бұрын
@@ritikpawar5893 You set the flow of water in this experiment using a screw based pinch. If you make it tight very less water flows and as a result water gets more time to get heat from the heated wire and hence its temperature increases more at the outlet.
@ritikpawar5893 3 жыл бұрын
Is the resistance of coil is same when heat ?if not,why not?
@AllLabExperiments 3 жыл бұрын
Resistance of the coil increases when current passes from it because of heat. This is because it is made up of metal. A common behaviour...
@Instagram.Status 3 жыл бұрын
Sir, please🙏 add subtitles(English) it will be highly helpful.
@AllLabExperiments 3 жыл бұрын
Press that cc button on the right top of the video. You will get english subtitles...
@Instagram.Status 3 жыл бұрын
@@AllLabExperiments no subtitles found.. It shows.
@AllLabExperiments 3 жыл бұрын
I am trying but not getting the right optn. In many videos it is showing closed caption but in some it is not showing. Trying to fix this
@Instagram.Status 3 жыл бұрын
@@AllLabExperiments thanku sir.
@dipankarchetri3974 3 жыл бұрын
Can we use mercury instead of water in this experiment please explain
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