1. What Is Planck's Equation?

Planck's equation describes the relationship between the energy of a photon and its frequency. It is a fundamental equation in quantum mechanics that shows energy is quantized rather than continuous.

2. How Does The Calculator Work?

The calculator uses Planck's equation:

Where:

• \( E \) — Energy in joules (J)
• \( h \) — Planck's constant (6.626×10⁻³⁴ J·s)
• \( f \) — Frequency in hertz (Hz)

Explanation: The equation shows that the energy of a photon is directly proportional to its frequency, with Planck's constant as the proportionality factor.

3. Importance Of Energy Calculation

Details: Calculating photon energy is essential in various fields including quantum physics, spectroscopy, photochemistry, and understanding light-matter interactions.

4. Using The Calculator

Tips: Enter frequency in hertz (Hz) and wavelength in meters (m). Both values must be positive numbers greater than zero.

5. Frequently Asked Questions (FAQ)

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

Q2: How are frequency and wavelength related?
A: Frequency and wavelength are inversely related through the equation c = fλ, where c is the speed of light (3×10⁸ m/s).

Q3: What is the typical energy range of photons?
A: Photon energies range from about 10⁻²⁵ J for radio waves to 10⁻¹⁵ J for gamma rays, covering many orders of magnitude.

Q4: Can I calculate energy from wavelength only?
A: Yes, using the relationship E = hc/λ, where c is the speed of light and λ is the wavelength.

Q5: Why is energy quantized?
A: Energy is quantized because it can only be transferred in discrete amounts called quanta, which was a revolutionary concept introduced by Max Planck.