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目錄
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開始
1
常數
切換目錄
加速器物理/常數
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外觀
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來自維基教科書,開放書籍,開放世界
<
加速器物理
常數
[
編輯
|
編輯原始碼
]
名稱
符號
值
光速
c
{\displaystyle c}
2.99792458
×
10
8
m
/
s
{\displaystyle 2.99792458\times 10^{8}\ \mathrm {m/s} }
電子電荷
e
{\displaystyle e}
1.60217733
×
10
−
19
C
{\displaystyle 1.60217733\times 10^{-19}\ \mathrm {C} }
電子質量
m
e
{\displaystyle m_{e}}
0.511
M
e
V
/
c
2
{\displaystyle 0.511\ \mathrm {MeV/c^{2}} }
μ子質量
m
μ
{\displaystyle m_{\mu }}
105.6583745
(
24
)
M
e
V
/
c
2
{\displaystyle 105.6583745(24)\ \mathrm {MeV/c^{2}} }
π介子質量
m
π
{\displaystyle m_{\pi }}
139.57018
(
35
)
M
e
V
/
c
2
{\displaystyle 139.57018(35)\ \mathrm {MeV/c^{2}} }
μ子平均壽命
τ
μ
{\displaystyle \tau _{\mu }}
2.1969811
(
22
)
μ
s
{\displaystyle 2.1969811(22)\ \mathrm {\mu s} }
π介子平均壽命
τ
π
{\displaystyle \tau _{\pi }}
26.033
±
0.005
n
s
{\displaystyle 26.033\pm 0.005\ \mathrm {ns} }
真空磁導率
μ
0
{\displaystyle \mu _{0}}
4
π
×
10
−
7
T
⋅
m
/
A
{\displaystyle 4\pi \times 10^{-7}\mathrm {T\cdot m/A} }
真空介電常數
ϵ
0
{\displaystyle \epsilon _{0}}
8.854187817
×
10
−
12
F
/
m
{\displaystyle 8.854187817\times 10^{-12}\ \mathrm {F/m} }
普朗克常数
h
{\displaystyle h}
4.1356675
×
10
−
15
e
V
⋅
s
{\displaystyle 4.1356675\times 10^{-15}\ \mathrm {eV\cdot s} }
狄拉克常数(约化普朗克常数)
ℏ
{\displaystyle \hbar }
6.5821195
×
10
−
16
e
V
⋅
s
{\displaystyle 6.5821195\times 10^{-16}\ \mathrm {eV\cdot s} }
康普顿波长
λ
C
{\displaystyle \lambda _{C}}
2.42631058
×
10
−
12
m
{\displaystyle 2.42631058\times 10^{-12}\ \mathrm {m} }
类别
:
书籍:加速器物理学
华夏公益教科书