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 in hertz (Hz).

2. How Does the Calculator Work?

The calculator uses the photon energy equation:

Where:

• \( E \) — Photon energy (Joules)
• \( h \) — Planck's constant (6.626 × 10⁻³⁴ J·s)
• \( f \) — Frequency (Hz)

Explanation: This equation demonstrates the direct proportionality between a photon's energy and its frequency, as described by quantum mechanics.

3. Importance of Photon Energy Calculation

Details: Calculating photon energy is essential in quantum physics, spectroscopy, photochemistry, and understanding electromagnetic radiation interactions with matter.

4. Using the Calculator

Tips: Enter frequency in hertz (Hz). The value must be positive and non-zero. The result will be displayed in joules (J).

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.

Q2: How is this different from E = hc/λ?
A: Both equations calculate photon energy. E = h×f uses frequency, while E = hc/λ uses wavelength (where c is the speed of light and λ is wavelength).

Q3: What are typical photon energy values?
A: Photon energies range from about 10⁻²⁵ J for radio waves to 10⁻¹⁵ J for gamma rays, with visible light around 10⁻¹⁹ J.

Q4: Can I calculate energy for multiple photons?
A: Yes, for n photons, the total energy would be E = n × h × f.

Q5: Why is photon energy important?
A: It helps determine if a photon has enough energy to excite electrons, break chemical bonds, or cause other quantum effects.