Efeito fotoelétrico
- Created by
- Renato Passos, Eng. de Software
- Reviewed by
- Renato Passos, Eng. de Software
Last updated: Apr 18, 2026
Formula
E = hν - Φ
About this calculator
The photoelectric effect calculator is a tool that allows calculating the kinetic energy of electrons emitted when light hits a metal surface. The photoelectric effect is a fundamental phenomenon in quantum physics, which demonstrates the corpuscular nature of light. The energy of the emitted electrons depends on the frequency of the incident light and the binding energy of the electrons to the metal surface.
The formula used is E = hν - Φ, where E is the kinetic energy of the electron, h is the Planck constant, ν is the frequency of the incident light, and Φ is the binding energy of the electron to the metal surface. This formula shows that the energy of the emitted electrons increases linearly with the frequency of the incident light. The calculator uses this formula to calculate the kinetic energy of the electrons.
The photoelectric effect is important in various fields, such as particle physics, electronics, and solar energy. It is used in devices such as solar cells, which convert sunlight into electrical energy. Additionally, the photoelectric effect is fundamental to understanding the behavior of electrons in materials.
When using the photoelectric effect calculator, it is essential to be careful with the units of measurement and input values. The frequency of the incident light must be expressed in hertz (Hz), and the binding energy must be expressed in joules (J). Additionally, it is essential to remember that the formula is a simplification and does not take into account other factors that may influence the photoelectric effect.
Frequently asked questions
What is the photoelectric effect?
The photoelectric effect is a physical phenomenon where electrons are emitted when light hits a metal surface.
What are the units of measurement used in the formula?
The frequency of the incident light is expressed in hertz (Hz) and the binding energy is expressed in joules (J).
How does the energy of the emitted electrons depend on the frequency of the incident light?
The energy of the emitted electrons increases linearly with the frequency of the incident light, according to the formula E = hν - Φ.
What are the applications of the photoelectric effect?
The photoelectric effect is used in devices such as solar cells, which convert sunlight into electrical energy.
What are the precautions when using the photoelectric effect calculator?
It is essential to be careful with the units of measurement and input values, and to remember that the formula is a simplification.