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25 Jul 2008 08:03:44 IST

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How the value of Planck's constant was found

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How the value of Planck's constant was found

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Protyush Sahu

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27 Jul 2008 12:27:07 IST

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Is there no one to answer ?????????????

Abhilash Sahoo sahoo

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3 Aug 2008 11:56:24 IST

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MY DEAR THERE IS NONE

®µD®A

Blazing goIITian

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3 Aug 2008 12:47:10 IST

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From the experiment.........................

Protyush Sahu

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3 Aug 2008 14:17:58 IST

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right..... but how

Chris21

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4 Aug 2008 14:51:15 IST

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work function of certain materials are known.

By bombarding these materials with a certain fixed frequency more than the threshold freq, we observe emission of photoelectrons. and by measuring their velocity, their Kinetic energy is calculated. Now using Einsteins formula

hv=Wo+KE... we can get h

One can also use the Schrodinger's equation

Antony Ajay

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4 Aug 2008 16:02:16 IST

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No dude,it is not possible since Einstein proposed this equation after Planck gave the value of his constant..........

Protyush Sahu

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9 Aug 2008 08:26:06 IST

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i do agree with antonyajay

Chris21

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9 Aug 2008 18:31:33 IST

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im sorry i misunderstood the question to how is it calculated...instead of how was it calculated,

Protyush Sahu

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9 Aug 2008 18:35:07 IST

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no problem try again !!!!!!!

Soumik

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26 Aug 2008 16:38:34 IST

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Plank's constant refers to the smallest area, possible in the six dimensional 'hyper'-space! It is calculated taking the three unit vectors, and their conjugates viz. x,p_x y,p_y and z,p_z. Thus 6 diamensions are possible, and hence Planck's constant is calculated with help of VECTOR-CALCULUS, assigning to it a unit of action.

U can also consult 'Vector Algebra' by Frank-Ayers. there the solution is given!

PLZ RATE IF U CAN UNDERSTAND!!!

Chris21

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30 Apr 2009 15:55:47 IST

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@Antony Ajay quote=No dude,it is not possible since Einstein proposed this equation after Planck gave the value of his constant..........

planck never gave the valu of his constant...Millikan calculated the value from einstein's eqn..

it came to my attention quite recently, that einsteins miracle papers of 1906 are attributed not onnly for proof of planks theory but also planks constants value...

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