wrong equation?

[Kandyce Lance 3E]

I'm not sure if i have this written wrong but i was going through some notes and i noticed i have debroglies equation written as lambda = hc/p but im not sure where the speed of light comes in. does someone mind explaining that?

[sabrina ghalambor 2J]

i think you might've combined 2 equations or something like that because the speed of light shouldn't be involved as far as i know! it could also be you trying to convert lambda to frequency but put the c in the wrong place? i'm not sure why you have that written but just know that its wavelength= h/p :)

[Edwin Liang 1I]

I believe you mistook two separate equations for De Broglie's. Lambda = h/mv would be the equation.

[Kainalu Puu-Robinson]

As the other people said, I think you mistook the E = (h*c)/lambda and the c = lambda*v equations.

[Kushaal Madadi 2F]

Conceptually, you shouldn't include the speed of light in de Broglie equation because de Broglie deals with matter waves. It is literally impossible for matter to go anywhere close to the speed of light!

[205323697]

How would we combine the two equations?

[Nina Ellefsen 2D]

If the velocity was ever equal to c, then you would be able to substitute it in for v in the equation lambda=h/mv ------> you can also derive this by combining lambda=h/p with E=mc^2

E=hv=mc^2
E=h(c/lambda)=mc^2
h=mc(lambda)
lambda=h/mc