Frequently Asked Questions
What is the relationship between wavelength and frequency?
Wavelength (λ) and frequency (f) are inversely proportional, related by c = λ × f, where c is the wave speed. For electromagnetic waves, c is the speed of light (~3×10⁸ m/s).
What units are used for wavelength?
Wavelength is measured in meters (m) as the base unit, but can also be expressed in nanometers (nm), micrometers (μm), or millimeters (mm) depending on the application.
What is the wavelength range of visible light?
Visible light spans approximately 380 nm (violet) to 750 nm (red). Wavelengths shorter than 380 nm are ultraviolet (UV), and longer than 750 nm are infrared (IR).
2026 physical constants