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Looking for sites in Science, Reference ? ActiPages covers a large variety of annotated web sites related to Science, Reference. This category lists wide range of carefully selected web sites in Science, Reference.

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Physics and Science Reference by PhysLINK.com - Includes physical constants, online unit conversions, periodic table of elements, exact time, fundamental physical formulae and equations.
Beta-Theta - Gives general definitions, background and examples from the science fields of biology, physics, chemistry, math, and history. Includes forum boards.
CalcTool - Directory of simply-presented javascript calculators and equations for making common calculations. Provides quick, simple online calculation and unit conversion tools.
Eformulae.com - Online resource providing engineering, science, math, physics and chemistry formulae for reference.
Knovel - Online reference collection used by applied scientists and practicing engineers to quickly locate technical information.
RefScout - A weekly, scientific reference mailing service.
Science and Engineering Encyclopedia - Descriptions, equations, calculators, conversions and material data for engineering, mathematics, physics and chemistry.
The Constants and Equations Pages - Expands reference resources for science, maths, and astronomy.

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