- #1

- 8

- 0

How do you calcuate at what energy do a photon and an electron have the same de broglie wavelength?

You are using an out of date browser. It may not display this or other websites correctly.

You should upgrade or use an alternative browser.

You should upgrade or use an alternative browser.

- Thread starter ariana13
- Start date

- #1

- 8

- 0

How do you calcuate at what energy do a photon and an electron have the same de broglie wavelength?

- #2

Hootenanny

Staff Emeritus

Science Advisor

Gold Member

- 9,621

- 7

HiHow do you calculate at what energy do a photon and an electron have the same de broglie wavelength?

I'm assuming that this is a homework question, in which case for future reference we have Homework & Coursework problems for such questions. Don't worry about it now, your thread will get moved there in due course.

Now for your question. What do you know about the de Broglie wavelength? How is it claculated?

- #3

- 8

- 0

- #4

Hootenanny

Staff Emeritus

Science Advisor

Gold Member

- 9,621

- 7

[tex]\lambda = \frac{hc}{pc} = \frac{hc}{\sqrt{T^2+2Tm_0c^2}}[/tex]

- #5

- 8

- 0

- #6

Hootenanny

Staff Emeritus

Science Advisor

Gold Member

- 9,621

- 7

There are no stupid questions

Anyway, it comes from the relativistic energy eqaution,

[tex]E^2 = \left(pc\right)^2 + \left(m_0c^2\right)^2[/tex]

Where

[tex]\lambda = \frac{hc}{pc} = \frac{hc}{\sqrt{E^2 - m_0^2c^4}}[/tex]

- #7

- 8

- 0

Thanks for clarifying that, i think i do it now. :)

Share: