Calculating the speed of electrons?

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To calculate the speed of an electron using its De Broglie wavelength, the equation is λ = h/(mv), where λ represents the wavelength, h is Planck's constant, m is the mass of the electron, and v is its velocity. The user seeks clarification on this equation and definitions of the symbols involved. The discussion highlights the importance of understanding these fundamental concepts in particle physics. Quick responses provide the necessary information for the user's studies. Mastery of these equations is essential for further exploration in the field.
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I'm now studying particle physics again after a long break, so as a refresher I've been going through my old syllabus again.

Trouble is, most of my notes suck/are lost and my memory isn't so great when it comes to the specific equations.

So basically, what's the equation for working out the speed of an electron when you're given it's De Broglie wavelength?

Definitions of the symbols won't go a miss too ;P

Please and thankyou.
 
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the De Broglie wavelength is given by

\lambda = \frac{h}{mv}

h = Planck's constant
m = mass
v = velocity.
 
Thankyou very much for the quick reply.
 
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