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10.06.2015 15:24 - Constants
Автор: dimitarf Категория: Други   
Прочетен: 1411 Коментари: 0 Гласове:
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Последна промяна: 27.11.2017 22:55


 
natural unit of action 
image
image
 Value  1.054 571 726 x 10-34 J s
image
 Standard uncertainty  0.000 000 047 x 10-34 J s
image
  Relative standard uncertainty   4.4 x 10-8
image
 Concise form  1.054 571 726(47) x 10-34 J s    
 
image
Click here for correlation coefficient of this constant with other constants  
Source: 2010 CODATA     
recommended values
 
Definition of
uncertainty
 
     Correlation coefficient with
any other constant

 
 
atomic unit of action 
image
image
 Value  1.054 571 726 x 10-34 J s
image
 Standard uncertainty  0.000 000 047 x 10-34 J s
image
  Relative standard uncertainty   4.4 x 10-8
image
 Concise form  1.054 571 726(47) x 10-34 J s    
 
image
Click here for correlation coefficient of this constant with other constants  
Source: 2010 CODATA     
recommended values
 
Definition of
uncertainty
 
     Correlation coefficient with
any other constant

 
image

Table of universal constants[edit]

Quantity

Symbol

Value[7][8]

Relative Standard Uncertainty

speed of light in vacuum

image

299 792 458 m·s−1

defined

Newtonian constant of gravitation

image

6.67384(80)Ч10−11 m3·kg−1·s−2

1.2 Ч 10−4

Planck constant

image

6.626 069 57(29) Ч 10−34 J·s

4.4 Ч 10−8

reduced Planck constant

image

1.054 571 726(47) Ч 10−34 J·s

4.4 Ч 10−8

Table of electromagnetic constants[edit]

Quantity

Symbol

Value[7][8] (SI units)

Relative Standard Uncertainty

magnetic constant (vacuum permeability)

image

4π Ч 10−7 N·A−2 = 1.256 637 061... Ч 10−6 N·A−2

defined

electric constant (vacuum permittivity)

image

8.854 187 817... Ч 10−12 F·m−1

defined

characteristic impedance of vacuum

image

376.730 313 461... Ω

defined

Coulomb"s constant

image

8.987 551 787... Ч 109 N·m2·C−2

defined

elementary charge

image

1.602 176 565(35) Ч 10−19 C

2.2 Ч 10−8

Bohr magneton

image

9.274 009 68(20) Ч 10−24 J·T−1

2.2 Ч 10−8

conductance quantum

image

7.748 091 7346(25) Ч 10−5 S

3.2 Ч 10−10

inverse conductance quantum

image

12 906.403 7217(42) Ω

3.2 Ч 10−10

 




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Автор: dimitarf
Категория: Лични дневници
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