Colin James Physics - Physics data.

Physics icon (wtphys.jpg).

Last updated: 11th October 2013.

Collision - elastic - one dimension - calculations and formulae.
Collision - elastic - two dimensions - example with calculations.
Electromagnetism - Fleming's Rules.
Electromagnetism - Maxwell's Equations.
Physical constants - recommended values.
SI prefixes and units.

Physical constants - recommended values.

Parentheses.

Quantities in parentheses () in the value column contain the standard uncertainty of the value.

Space between numbers.

A space between numbers before a decimal point (or in integers) in the value column indicate firstly thousands then millions and so on.
For example, 1 836 indicates one thousand eight hundred and thirty six.

MeV.

MeV = 106 eV. eV = electronvolt = the change in kinetic energy of an electron in vacuum moving through a potential difference of one volt » 1.602 176 x 10-19 J.

Pure water.

Water icon (fzwater.jpg).
Pure water referred to in measurements on the proton means as measured in a spherical sample of pure water at 25°C with the diamagnetic shielding effect of (1-m'p/mp) of 25.689(15) x 10-6.

Quantity

Symbol

Value

speed of light in a vacuum

c, C0

299 792 458 m s-1

magnetic constant

m0

4pi x 10-7 =
12.566 370 614... x 10-7 N A-2

electric constant

e0

8.854 187 817... x 10-12 F m-1

elementary charge

e

1.602 176 487(40) x 10-19 C

Newtonian gravitational constant

G

6.674 28(67) x 10-11 m3 kg-1 s-2

unified atomic mass unit

u

1.660 538 782(83) x 10-27 kg

rest mass of electron

me

9.109 382 15(45) x 10-31 kg

rest mass of proton

mp

1.672 621 637(83) x 10-27 kg

rest mass of proton/rest mass of electron

mp/me = mp me-1

1 836.152 6675(39)

rest mass of neutron

mn

1.674 927 211(84) x 10-27 kg

energy equivalence of rest mass of electron

mec2

0.510 998 910(13) MeV

energy equivalence of rest mass of proton

mpc2

938.272 013(23) MeV

energy equivalence of rest mass of neutron

mnc2

939.565 346(23) MeV

Planck constant

h

6.626 068 96(33) x 10-34 Js

Planck constant/2p

h

1.054 571 628(53) x 10-34 Js

Rydberg constant

R¥

10 973 731.568 527(73) m-1

fine structure

a

7.297 352 537 6(50) x 10-3

fine structure - inverse

a-1

137.035 999 679(94)

Hartree energy

Eh

4.359 743 94(22) x 10-18 J

Bohr radius

a0

0.529 177 208 59(36) x 10-10 m

classical electron radius

re

2.817 940 289 4(58) x 10-15 m

Compton wavelength of electron

lC

2.426 310 217 5(33) x 10-12 m

Compton wavelength of proton

lC,p

1.321 409 844 6(19) x 10-15 m

Compton wavelength of neutron

lC,n

1.319 590 895 1(20) x 10-15 m

Avogadro constant

NA, L

6.022 141 79(30) x 1023 mol-1

Faraday constant

F

96 485.339 9(24) C mol-1

molar gas constant

R

8.314 472(15) J mol-1 K-1

Boltzmann constant

k

1.380 650 4(24) x 10-23 J K-1

Stefan-Boltzmann constant

s

5.670 400(40) x 10-8 W m-2 K-4

first radiation constant

c1

3.741 771 18(19) x 10-16 W m2

second radiation constant

c2

1.438 775 2(25) x 10-2 m K

Bohr magneton

mB

927.400 915(23) x 10-26 J T-1

nuclear magneton

mN

5.050 783 24(13) x 10-27 J T-1

gyromagnetic ratio of proton

gp

2.675 222 099(70) x 108 s-1 T-1

gyromagnetic ratio of proton/2p

gp/2p

42.577 482 1(11) MHz T-1

gyromagnetic ratio of proton in pure water

g'p

2.675 153 362(73) x 108 s-1 T-1

gyromagnetic ratio of proton in pure water/2p

g'p/2p

42.576 388 1(12) MHz T-1

magnetic flux

f0

2.067 833 667(52) x 10-15 Wb

magnetic moment of electron

me

-928.476 377(23) x 10-26 J T-1

magnetic moment of electron in terms of Bohr magneton

me/mB

-1.001 159 652 181 11(74)

magnetic moment of proton

mp

1.410 606 662(37) x 10-26 J T-1

magnetic moment of proton in terms of Bohr magneton

mp/mB

1.521 032 209(12) x 10-3

magnetic moment of proton in pure water in terms of Bohr magneton

m'p/mB

1.520 993 128(17) x 10-3

magnetic moment of proton in pure water in terms of nuclear magneton

m'p/mN

2.792 847 356(23)

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