Examples for

# Physics

Physics studies features of the universe, ranging from natural to manmade phenomena. With Wolfram|Alpha, you can explore data about phenomena in the areas of quantum mechanics, nuclear and particle physics, thermodynamics and Newtonian mechanics. Wolfram|Alpha also knows a variety of physical formulas and constants. With all of this built-in data and interactive calculators, it is easy to get answers to your physics questions, either for homework or general curiosity.

Mechanics

Explore the physical laws that describe the behavior of one or more bodies under a system of forces.

#### Do a gravitation calculation:

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Statistical Physics

Explore the motion of fluids using statistical methods.

#### Compute entropy with the Sackur–Tetrode equation:

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Optics

Study the properties and behaviors of light.

#### Use the Rydberg formula to compute spectral lines:

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Quantum Physics

Explore quantum phenomena, such as scattering and quantum states.

#### Look up atomic spectra:

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Physical Constants

Explore details, values and definitions for various physical constants.

#### Do computations involving constants:

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Fluid Mechanics

Examine the behavior of fluid systems and objects moving through them.

#### Compute fluid flow around an object:

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Oscillations & Waves

Explore oscillatory motion, from pendulums to electromagnetic waves.

#### Compute a Doppler shift:

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Thermodynamics

Explore heat, energy and entropy and how they relate to thermodynamic systems.

#### Analyze an Atkinson cycle:

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Relativity

Explore Einstein's theories of special and general relativity and how they relate to gravity, time and space.

#### Determine gravitational time dilation near massive objects:

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Particle Physics

Get information about particles and their interactions.

#### Compare the values of a property for a class of particles:

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Physical Principles

Explore physical laws, principles and effects.

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Step-by-Step Solutions for Physics

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• Electricity & Magnetism

Explore the physics of the electromagnetic force.

#### Do a Coulomb's law computation:

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Nuclear Physics

Explore aspects of nuclear physics, including radiation and nuclear power.

#### Compute characteristics of Cerenkov radiation:

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Astrophysics

Explore the nature of celestial objects, including black holes, stars and planets.

#### Compute properties of a black hole:

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Physical Effects

Get information on physical effects and compare them.

#### Compare physical effects:

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