APPENDIX 4

APPENDIX Appendix- Appendix- - - - - Appendix SOME IMPORTANT CONSTANTS IN PHYSICS Name Symbols Value Speed of light in vacuum c . × m s - Gravitational constant G . × - N m kg - Acceleration due to gravity (sea level, at ° latitude) g . m s - Planck constant h . × - J s Boltzmann constant k . × - J K - Avogadro number N A . × mol - Universal gas constant . J mol - K - Stefan – Boltmann constant σ . × - W m - K - Wien’s constant b . × - m K Permeability of free space μ π × - H m - Standard atmospheric pressure atm . × Pa Appendix- Appendix- - - - - :