Compare calculators
Both calculators run independently — change the inputs on either side to compare results.
Quantum
De Broglie Wavelength Calculator
Compute the de Broglie wavelength λ = h/(m·v) of a massive particle from its mass and velocity. Demonstrates wave-particle duality: every massive particle has an associated quantum wavelength.
Fill in the required fields to see your result.
Quantum
Photon Energy Calculator
Compute the energy of a single photon from its wavelength using E = hc/λ, the Planck-Einstein relation. Returns energy in joules; convert to electron-volts by dividing by 1.602 × 10⁻¹⁹.
Fill in the required fields to see your result.
Key differences
| De Broglie Wavelength Calculator | Photon Energy Calculator | |
|---|---|---|
| Category | Quantum | Quantum |
| Inputs required | 2 | 1 |
| Result | De Broglie Wavelength (m) | Photon Energy (J) |
| What it does | Compute the de Broglie wavelength λ = h/(m·v) of a massive particle from its mass and velocity. Demonstrates wave-particle duality: every massive particle has an associated quantum wavelength. | Compute the energy of a single photon from its wavelength using E = hc/λ, the Planck-Einstein relation. Returns energy in joules; convert to electron-volts by dividing by 1.602 × 10⁻¹⁹. |