Speed of light derived from Planck constant?

In summary, the conversation discusses the relationship between the fundamental constants of Planck's constant (h) and the speed of light (c), and whether one can be derived from the other. It is mentioned that they are connected in some way and that there may be a hypothetical proof in the future. The conversation also discusses the fine structure constant and its importance in the standard model, with some mentioning that it may hold significance in the future. Overall, the conversation highlights the importance and interconnectedness of these fundamental constants in physics.
  • #1
zeusgm
1
0
I was wondering if the speed of light (c) can be derived from Planck's constant (h) or the opposite way.

I know that they are both fundamental constants, but I'm sure they are connected somehow.

Saying it on a different way: if Planck's constant would be different, would the speed of light change?

Which would be the way on how to proceed for a hypothetical proof?
 
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  • #2
The name ‘fundamental constants’ is misleading; G, h and c are not constants at all: in the Fundamental Planks units G=h=c=1. But you can vary parameters of the standard model instead.
 
  • #3
It can be "derived" if one day in the future we will understand why the fine structure constant is dimensionless and why its value is close to 1/137. But asking such questions is being strongly discouraged by what is known as "mainstream physics". Once upon a time Princeton physicists (Dyson) were interested in these questions, but they are not for an ordinary folk to ask.
 
  • #4
fine structure constant is part of parameters of dimensionless parameters of the Standard model. It is not very special - there are many other dimensionless constants.
 
  • #5
Dmitry67 said:
fine structure constant is part of parameters of dimensionless parameters of the Standard model. It is not very special - there are many other dimensionless constants.

Perhaps for you, and for others that are happy with the standard model, it is not very special. For Pauli it was, for Feynman it was, for Dyson it was. Perhaps it will be such for someone in the future - why not to keep such a possibility in mind as a working hypothesis that is waiting for a verification?
 

1. What is the significance of the speed of light derived from Planck constant?

The speed of light derived from Planck constant is a fundamental constant in physics that relates the speed of light to the other fundamental constants of the universe. It is used in a variety of calculations and equations, including the famous E=mc^2 equation from Einstein's theory of relativity.

2. How was the speed of light derived from Planck constant?

The speed of light was derived from Planck constant through a series of experiments and calculations by scientists such as Max Planck, Albert Einstein, and Arthur Compton. These experiments and calculations involved measuring the frequency and wavelength of light, and using the relationship between energy and frequency to determine the speed of light.

3. Why is the speed of light derived from Planck constant considered a universal constant?

The speed of light derived from Planck constant is considered a universal constant because it is the same for all observers, regardless of their relative motion or position in the universe. This is a fundamental principle in Einstein's theory of relativity and has been confirmed by numerous experiments.

4. Can the speed of light derived from Planck constant ever change?

No, the speed of light derived from Planck constant is considered a constant and is not expected to change. It is a fundamental property of the universe and has been consistently measured to be the same over time and across different locations in the universe.

5. What are some practical applications of the speed of light derived from Planck constant?

The speed of light derived from Planck constant has many practical applications in fields such as physics, astronomy, and engineering. It is used in the development of technologies such as lasers, fiber optics, and GPS systems. It also plays a crucial role in our understanding of the universe and the laws of physics that govern it.

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