1. What is Planck's Equation?

Planck's equation describes the energy of a photon based on its frequency. The equation is fundamental in quantum mechanics and explains the particle-like properties of electromagnetic waves.

2. How Does the Calculator Work?

The calculator uses Planck's 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: The energy of a photon is directly proportional to its frequency, with Planck's constant as the proportionality factor.

3. Importance of Photon Energy Calculation

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

4. Using the Calculator

Tips: Enter the photon frequency in Hertz (Hz). The frequency must be a positive value.

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 (6.626 × 10⁻³⁴ J·s).

Q2: How does wavelength relate to photon energy?
A: Energy can also be calculated using wavelength: \( E = \frac{h \times c}{\lambda} \), where c is speed of light and λ is wavelength.

Q3: What are typical photon energy values?
A: Visible light photons have energies around 10⁻¹⁹ J, while X-ray photons have energies around 10⁻¹⁵ J.

Q4: Why is photon energy quantized?
A: According to quantum theory, electromagnetic energy is quantized and comes in discrete packets called photons.

Q5: How is this used in practical applications?
A: Applications include LED technology, solar cells, medical imaging, and understanding atomic spectra.