What Is the Photon Energy, Wavelength & Optical Frequency Calculator?
The Planck-Einstein relation was formulated by Max Planck in 1900 and Albert Einstein in 1905, founding modern quantum physics.
How Does the Photon Energy, Wavelength & Optical Frequency Calculator Work?
Electromagnetic radiation propagates as localized discrete packets of energy called photons.
Photon Energy, Wavelength & Optical Frequency Calculator Formula & Variables
The core mathematical equation utilized by this calculator is expressed as:
E = h \cdot \nu = \frac{h \cdot c}{\lambda}, \quad E_{\text{eV}} = \frac{E}{1.602 \times 10^{-19}}
Photon energy E is Planck constant h times speed of light c over wavelength lambda.
How to Use the Photon Energy, Wavelength & Optical Frequency Calculator
- Input the radiation wavelength in nanometers (nm).
Step-by-Step Example Calculation
Green DPSS Laser 532 nm
Input Values:
wavelengthNm:532.0
Worked Steps: A 532 nm green photon has quantum energy of 2.33 eV (3.73 × 10⁻¹⁹ Joules) and oscillates at an optical frequency of 563.52 THz.
Understanding Your Result
Photon Energy (eV): Energy in electron-volts.
Energy (Joules): Energy in standard SI Joules.
Frequency (THz): Optical oscillations per second.
Spectrum Band: Classification (Gamma, X-Ray, UV, Visible, IR, Microwave).
Factors That Affect the Result
- Wavelength alone dictates individual photon quantum energy.
When Should You Use This Calculator?
- Laser spectroscopy, photovoltaic solar cell bandgap design, fluorescence microscopy, and radiochemistry.
Assumptions & Limitations
- Assumes propagation in vacuum (n = 1.0) with c = 299,792,458 m/s.
Frequently Asked Questions
Calculation Accuracy & Reference Note
Standard CODATA quantum physical constants.