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E=mc² γ λ
Modern and Microscopic Physics Calculators
19 free online tools for quantum mechanics, relativity, photon energy, atomic physics, nuclear processes, radiation, and microscopic-scale calculations.
Quantum Mechanics
Relativity
General Relativity Calculator
Explore basic general relativity relationships involving gravity and spacetime.
CalculateLorentz Factor Calculator
Calculate the Lorentz factor from velocity relative to the speed of light.
CalculateRelativistic Kinetic Energy Calculator
Calculate kinetic energy for objects moving at relativistic speeds.
CalculateMass Energy Equivalence Calculator
Convert mass into equivalent energy using Einstein’s mass-energy relation.
CalculateE MC2 Calculator
Calculate energy from mass using Einstein’s famous E = mc² equation.
CalculateSchwarzschild Radius Calculator
Calculate the event-horizon radius associated with a given mass.
CalculatePhotons & Matter Waves
Wavelength to Energy Calculator
Convert electromagnetic wavelength into photon energy.
CalculateEnergy of Photon Calculator
Calculate photon energy from frequency or wavelength.
CalculateWavelength Energy Converter
Convert between photon wavelength and electromagnetic energy.
CalculateDe Broglie Wavelength Calculator
Calculate matter-wave wavelength from particle momentum or velocity.
CalculateAtomic Physics
Ionization Energy Calculator
Calculate or compare energy required to remove electrons from atoms.
CalculateAtomic Mass Calculator
Calculate atomic mass from isotopic abundance and isotope masses.
CalculateIsotope Calculator
Analyze isotope composition, abundance, and related atomic properties.
CalculateNuclear & Radiation Physics
Radioactive Decay Calculator
Calculate remaining radioactive material from half-life and elapsed time.
CalculateNuclear Decay Calculator
Calculate decay constant, activity, half-life, and nuclear decay behavior.
CalculateNuclear Binding Energy Calculator
Calculate nuclear binding energy from mass defect and nucleon data.
CalculateRadiation Dose Calculator
Estimate radiation dose using absorbed energy and exposed mass.
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FAQ
Frequently Asked Questions
Common questions about quantum mechanics, relativity, photons, atomic physics, and nuclear calculations.
Modern physics includes theories and phenomena that go beyond classical mechanics, especially quantum mechanics, relativity, atomic physics, nuclear physics, and the behavior of matter and radiation at microscopic scales.
The Lorentz factor describes how time, length, momentum, and energy change for objects moving at speeds that are a significant fraction of the speed of light.
Photon energy is inversely proportional to wavelength. Shorter wavelengths correspond to higher photon energies, while longer wavelengths correspond to lower energies.
Half-life is the time required for half of the radioactive nuclei in a sample to decay. It is a characteristic property of each radioactive isotope.
Yes. The tools on this page are free online calculators for educational work, quick checks, and common modern physics calculations.