Physics
Tables, constants, databases
Periodic Table
Dynamic Periodic Table
Periodic Table
(http://periodictable.com/)
Physical Constants
Inorganic materials dataset
Chemical Database
Phase Diagrams
Unit converter
(For All Type of Online Calculator & Metric Conversions)
Digital Dutch
(Atmosphere Calculator, Unit Converter)
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Physics
Physics - Sparvigna
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lanl.arXiv.org
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Science Daily
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Chemguide
Physics in Action