1. What is the Energy Equation?

The 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 energy equation:

Where:

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

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

3. Importance of Energy Calculation

Details: Accurate energy calculation is crucial for understanding photon energy in quantum mechanics, spectroscopy, and various applications in physics and chemistry.

4. Using the Calculator

Tips: Enter frequency in hertz (Hz). The value must be valid (frequency > 0).

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: What are typical frequency values?
A: Frequency values can range from radio waves (kHz-MHz) to visible light (THz) to gamma rays (EHz and higher).

Q3: Can this equation be used for all electromagnetic radiation?
A: Yes, the equation E = h × f applies to all photons across the electromagnetic spectrum.

Q4: What are the units of the result?
A: The result is in joules (J), the SI unit of energy.

Q5: How is this related to wavelength?
A: Using the relationship c = λ × f (where c is speed of light), the equation can also be written as E = h × c / λ.