Planck's Constant Related to Velocity of Light?

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The discussion centers on the relationship between Planck's constant (h) and the velocity of light (c), with some formulas suggesting a connection through division by c. Participants debate whether this indicates an inverse relationship between h and c, but one contributor asserts they are independent fundamental constants. The calculations involving h and c are contextual, depending on whether wavelength or frequency is used in experiments. The argument emphasizes that constants remain unchanged unless unit systems are altered. Overall, the conversation highlights the complexity of their relationship in quantum mechanics and special relativity.
LarryS
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A few of the formulas that I have seen for calculating Planck's constant involve, amoung other things, dividing by the velocity of light. It appears as though the finiteness of the velocity of light and that Planck's constant is not zero are related. This would imply that QM and Special Relativity are related at a fundamental level. Comments? Thanks in advance.
 
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referframe said:
A few of the formulas that I have seen for calculating Planck's constant involve, amoung other things, dividing by the velocity of light.

Can you give an example or two?
 
Please see the attached PDF file describing how to measure and compute Planck's constant, h, from LED's. Does not this imply that h and c are inversely related?
 

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referframe said:
Please see the attached PDF file describing how to measure and compute Planck's constant, h, from LED's. Does not this imply that h and c are inversely related?

no, they are independent fundamental constants.
 
referframe said:
Please see the attached PDF file describing how to measure and compute Planck's constant, h, from LED's. Does not this imply that h and c are inversely related?

In the document, it is given that slope = hc/e.Then using slope,c and e we can find h.
My question is,for finding the slope itself we have to use h first.

Both h and c are just constants. we have so many equations in physics having constants in it. that doesn't mean constants are inter related or inter dependent? They don't change. That's why they are constants unless we change units.
 
The only reason c is in that equation is because in this experiment we use the wavelength of the light in the calculation, rather than its frequency. If we started out knowing or measuring the frequency of the light instead, c wouldn't appear in the calculation.
 

Thread 'Two equivalent statements of time reversal symmetric Hamiltonian'

Time reversal invariant Hamiltonians must satisfy ##[H,\Theta]=0## where ##\Theta## is time reversal operator. However, in some texts (for example see Many-body Quantum Theory in Condensed Matter Physics an introduction, HENRIK BRUUS and KARSTEN FLENSBERG, Corrected version: 14 January 2016, section 7.1.4) the time reversal invariant condition is introduced as ##H=H^*##. How these two conditions are identical?
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