- #1
waterfire
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The de Broglie equations describing matter waves are $$\lambda = \frac{h}{p} , f = \frac{E}{h} .$$
When these are substituted into ##v = \lambda f## the result is $$v = \frac{E}{p} .$$
Now, when ##E = \frac{1}{2} m v^2## and ##p = m v## are substituted into this equation the result is $$v = \frac{1}{2} v .$$
What's going on here?
When these are substituted into ##v = \lambda f## the result is $$v = \frac{E}{p} .$$
Now, when ##E = \frac{1}{2} m v^2## and ##p = m v## are substituted into this equation the result is $$v = \frac{1}{2} v .$$
What's going on here?