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Physics is the natural science that involves the study of matter matter and energy and the way they act on each other in heat, light, electricity, and sound. Broadly, it is the general analysis of nature, conducted in order to understand how the universe behaves. Physics intersects with many interdisciplinary areas of research, such as biophysics and quantum chemistry, and the boundaries of physics are not rigidly defined.

Specialized topics in physics include: classical mechanics, quantum mechanics, thermodynamics and statistical mechanics, electromagnetism, and special relativity.

vCalc's Physics library contains equations concerned with the study of matter, motion, time and related concepts such as energy and force.

The featured Physics and Engineering Calculators:

**Simple Machine Calculator**: 10 functions on levers, pulley and gear systems.**Light and Matter Online Physics Textbook**: 36 chapters containing a complete introduction to physics textbook.**Ohm's Law Calculator**: 12 functions to compute power, potential (voltage), resistance and current.**Astronomy Calculator**: 31 functions covering Kepler's 3rd Law, the Small Angle Formula, Flux and Magnitude formulas, Telescope formulas, Mass formulas, Relative Size formulas, Wavelength formulas, Luminosity formulas and others.**Angles of Reflection and Refraction Calculator**: 6 functions reflection, refraction and critical angle.**Hess' Law Calculator**: computes the sum of enthalpy reactions in a series.