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gas composition of air

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static and kinetic coefficients of friction for various materials

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from a heptillionth to antonplex: decimal multiples, prefixes, symbols and common names

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most commonly used constants in physics and engineering

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glossary of physics terms, dictionary of definitions.

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all greek alphabet letter symbols, their names and english equivalents

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information on the Humidex and Windchill factors and a conversion calculator.

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interactive periodic tables of elements, chemical data, etc.

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USNO atomic clock current time, worldwide time zones, etc.

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conversion of imperial and US units to SI, and physical quantities conversions

'Physics is mathematical not because we know so much about the physical world, but because we know so little; it is only its mathematical properties that we can discover.'**Bertrand Russell**

(*1872-1970*)

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