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Physics
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Atomic and nuclear physics
Atomic and nuclear physics
6 formulas · Physics
Photon energy
E
=
h
f
=
h
c
λ
E=h f=\dfrac{hc}{\lambda}
E
=
h
f
=
λ
h
c
Einstein's equation (photoelectric effect)
h
f
=
W
+
E
k
hf=W+E_k
h
f
=
W
+
E
k
Mass–energy equivalence
E
=
m
c
2
E=mc^2
E
=
m
c
2
Law of radioactive decay
N
=
N
0
(
1
2
)
t
/
T
1
/
2
N=N_0\left(\tfrac12\right)^{t/T_{1/2}}
N
=
N
0
(
2
1
)
t
/
T
1/2
Nuclear binding energy
E
=
Δ
m
c
2
E=\Delta m\,c^2
E
=
Δ
m
c
2
de Broglie wavelength
λ
=
h
p
\lambda=\dfrac{h}{p}
λ
=
p
h
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