## de broglie [ENDORSED]

$\lambda=\frac{h}{p}$

Hannah Lee 1B
Posts: 26
Joined: Fri Apr 06, 2018 11:03 am

### de broglie

In my notes, I have written:
Energy, E= p*v
For a photon: E = p*c and E = hv = hc/λ

How can E equal both p*v and p*c? Or did I write it down wrong

Chem_Mod
Posts: 18400
Joined: Thu Aug 04, 2011 1:53 pm
Has upvoted: 435 times

### Re: de broglie  [ENDORSED]

c in this case is the value of v. V represents the velocity, and c is the speed of light, so in cases of photons, they move at the speed of light! Your notes are correct. :)