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Fundamental Physical Constants / Chemical - Physical - Thermochemical Data Home > Chemical News & Interesting / Fundamental Physical Constants / Chemical - Physical - Thermochemical Data CHEMICAL NEWS & INTERESTING / FUNDAMENTAL PHYSICAL CONSTANTS / CHEMICAL - PHYSICAL & THERMOCHEMICAL DATA Fundamental Physical Constants Laboratory Reagents and Solutions Properties of Atoms and Bonds Properties of Molecules Chemistry and Mobile Phones     Hyaluronic Acid chemistry, properties, functions and benefits     Aqueous Equilibrium Constants St Te   The most common fundamental physical constants are presented in these posts. These constants can be categorized as general constants , electron constants , proton constants , neutron constants , atomic constants , matter constants . The SI

useful conversion factors between units of Fundamental Physical Constants Home > Fundamental Physical Constants / Chemical - Physical - Thermochemical Data > Fundamental Physical Constants > Useful Conversion Factors between Units of Fundamental Physical Constants Useful Conversion Factors between Units of Fundamental Physical Constants   Certain fundamental physical constants have special importance on account of their universality or place in fundamental theory. A lot of early scientific work was done using the CGS system that has as base units the centimetre, gram and second. The table below lists the more common conversion factors between SI and CGS units.   Table 1: Length CGS unit SI unit Reciprocal   1 inch (in) = 2.54 * 10 -2 m 39.370079   1 foot (ft) = 0.3048 m 3.280839   1 yard (yd)

Fundamental Physical Constants Home > Fundamental Physical Constants - Chemical - Physical - Thermochemical Data > Fundamental Physical Constants Fundamental Physical Constants   Certain physical constants have special importance on account of their universality or place in fundamental theory. These constants are given below in SI units. The figure in brackets is the estimated uncertainty in the last digit.   Table 1: Physical Constants - General Constants Quantity Symbol Value Unit Speed of light in vacuum c 2.997924590(8) * 10 8 m.s -1 Planck constant h 6.62620(5) * 10 -34 J.Hz -1 Electron charge e 1.602192(7) * 10 -19 C Gas constant R 8.31 J.K -1 .mol -1 Gravitational constant G N 6.673 * 10 -11 m 3 kg