- #1
Christophe.V
- 5
- 0
I wanted to calculate the frequency of an electron. The problem is that I just don't get a realistic value.
E=hf
In which:
h=4.135 667 33×10 −15 eV s
E=mc2+30keV (-> e.g. the energy of a tv)
Masselectron=9.10938215×10 −31 kg
c=299 792 458 m s-1
So:
(9.10938215×10 −31 kg * (299 792 458 m s-1)2) + 30keV= hf
8.1871*10-14J +30 keV=hf
541000 eV=hf
(541000 eV)/(h)=f
(541000 eV)/(4.135 667 33×10 −15 eV s)=f
f=1.308*1020 s-1
Isn't this a non-realistic number? How can they accelerate electrons in an accelerator if the frequency is so big? Or (which is probably more realistic) where am I wrong? Thanks!
E=hf
In which:
h=4.135 667 33×10 −15 eV s
E=mc2+30keV (-> e.g. the energy of a tv)
Masselectron=9.10938215×10 −31 kg
c=299 792 458 m s-1
So:
(9.10938215×10 −31 kg * (299 792 458 m s-1)2) + 30keV= hf
8.1871*10-14J +30 keV=hf
541000 eV=hf
(541000 eV)/(h)=f
(541000 eV)/(4.135 667 33×10 −15 eV s)=f
f=1.308*1020 s-1
Isn't this a non-realistic number? How can they accelerate electrons in an accelerator if the frequency is so big? Or (which is probably more realistic) where am I wrong? Thanks!