- #1
americast
- 27
- 0
Hi all,
De Broglie had proposed the theory of wave particle duality. But I don't understand how the relation λ=h/(mu) holds true. I will tell you why:
De Broglie's derivation:
E=mc2 and E=hv
So mc2=hv
Thus, λ=h/(mc) and for particles its h/(mu).
I have a problem in the last line. All of us know that according to the theory of relativity, speed of light c is a constant and is independent of the frame of reference. It remains c from all reference frames i.e. if you are to travel at 2*108 m/s, you will still find light travel at c (unlike other particles which would otherwise travel at 1*108 m/s for you.) This means that the velocity of light relative to everyone is c. So h/(mc) does not need a defined reference frame.
In the above equation, when I am replacing c with u (for particles) the expression lacks a defined frame of reference. u is not an independent velocity but it is a velocity with respect to some observer. Who is this observer?
Gramercy...
De Broglie had proposed the theory of wave particle duality. But I don't understand how the relation λ=h/(mu) holds true. I will tell you why:
De Broglie's derivation:
E=mc2 and E=hv
So mc2=hv
Thus, λ=h/(mc) and for particles its h/(mu).
I have a problem in the last line. All of us know that according to the theory of relativity, speed of light c is a constant and is independent of the frame of reference. It remains c from all reference frames i.e. if you are to travel at 2*108 m/s, you will still find light travel at c (unlike other particles which would otherwise travel at 1*108 m/s for you.) This means that the velocity of light relative to everyone is c. So h/(mc) does not need a defined reference frame.
In the above equation, when I am replacing c with u (for particles) the expression lacks a defined frame of reference. u is not an independent velocity but it is a velocity with respect to some observer. Who is this observer?
Gramercy...