1. What is the Photon Energy Equation?

The photon energy equation E = h × f calculates the energy of a photon based on its frequency, where h is Planck's constant (6.626 × 10⁻³⁴ J·s) and f is the frequency of the photon in hertz (Hz).

2. How Does the Calculator Work?

The calculator uses the photon energy equation:

Where:

• \( E \) — Energy of the photon (Joules)
• \( h \) — Planck's constant (6.626 × 10⁻³⁴ J·s)
• \( f \) — Frequency of the photon (Hz)

Explanation: This fundamental equation in quantum mechanics relates the energy of a photon directly to its frequency through Planck's constant.

3. Importance of Photon Energy Calculation

Details: Calculating photon energy is essential in various fields including quantum physics, spectroscopy, photochemistry, and optical engineering. It helps determine the energy carried by electromagnetic radiation at different frequencies.

4. Using the Calculator

Tips: Enter the frequency of the photon in hertz (Hz). The value must be positive and greater than zero.

5. Frequently Asked Questions (FAQ)

Q1: What is Planck's constant?
A: Planck's constant (6.626 × 10⁻³⁴ J·s) is a fundamental physical constant that relates the energy of a photon to its frequency in quantum mechanics.

Q2: Can I calculate energy using wavelength instead of frequency?
A: Yes, using the equation E = h × c / λ, where c is the speed of light and λ is the wavelength.

Q3: What are typical energy values for photons?
A: Photon energies range from very small values (radio waves) to very large values (gamma rays), typically from 10⁻²⁴ to 10⁻¹⁵ joules.

Q4: Why is photon energy important in chemistry?
A: Photon energy determines whether electromagnetic radiation can cause electronic transitions, break chemical bonds, or initiate photochemical reactions.

Q5: How is this equation used in modern technology?
A: This equation is fundamental in designing lasers, LED lighting, solar cells, and various optical and spectroscopic instruments.