Conversions and Constants - Air Pollution and Global Warming: History, Science, and Solutions - page 341

Appendix

Conversions and Constants

A.1.1. Pressure Conversions
1 bar Nm − 2

= 10 3 mb = 0.986923 atm = 10 5

=

10 5

=

10 5

=

10 5 kg m − 1 s − 2

hPa Pa

10 5 Jm − 3 10 6 gcm − 1 s − 2

= = = 750.06 torr

= =

10 6 dyn cm − 2 750.06 mm Hg

= = =

1atm 1,013.25 hPa 1.01325 bar 760 torr

= 760 mm Hg

A.1.2. Energy Conversions

= =

10 7

=

1J 1Nm erg 1Ws

=

10 4 hPa cm 3

=

10 7

=

dyn cm 0.239 cal

=

1kgm 2 s − 2 10 7 gcm 2 s − 2 10 − 5 bar m 3 = =

= ×

10 18

=

6.25 eV 1CV

A.1.3. Speed Conversions
1ms − 1 100 cm s − 1 3.6 km h − 1 = = = 1.9459 knots

2.2378 mi hr − 1

=

A.1.4. Constants
A

10 23 molec mol − 1 = Avogadro's number = 6.02213 ×

10 8 ms − 1 c = speed of light = 2.99792 ×

1365 W m − 2

F s = solar constant =

Boltzmann's constant ( R ∗ / 10 − 23 JK − 1

k B = A ) = 1.3807 ×

10 − 23 kg m 2 s − 2 K − 1 molec − 1 10 − 22 cm 3 atm K − 1

= 1.3807 × = 1.3625 ×

10 − 16 gcm 2 s − 2 K − 1 molec − 1 10 − 24 cal K − 1 = 1.3807 × = 3.299 ×

10 − 19 cm 3 hPa K − 1 molec − 1 10 − 25 LatmK − 1 molec − 1 = 1.3807 × = 1.3625 ×

10 − 22 cm 3 atm K − 1 molec − 1 10 − 25 m 3 hPa K − 1 molec − 1

= 1.3625 × = 1.3807 ×