Laws of Photoelectric Effect
The laws governing the photoelectric effect are,
- This law, also known as the first law of photoeffect, establishes the direct proportionality between the intensity of electromagnetic radiation acting on a metallic surface and the photocurrent induced by this radiation. It was discovered by Aleksandr Stoletov in 1888.
- For any given material, there is a certain minimum (energy) frequency, called the threshold frequency, below which the emission of photoelectrons stops completely, no matter how high the intensity of the incident light. This law was introduced by Albert Einstein in 1905.
- For a light of any given frequency, the photoelectric current is directly proportional to the intensity of light as long as the light’s frequency is above the threshold frequency. This relationship was discovered by Henri Poincaré in 1905.
- Kinetic energy of the photoelectrons is directly proportional to the light frequency. This relationship was discovered by Albert Einstein in 1905.
Dual Nature of Matter
Dual Nature of Matter states that a matter exhibits both Particle Nature and Wave Nature. It means that when a matter is at rest it behaves like a particle and when it is moving it behaves like wave. Different Experiments have been performed to prove this by the science community.
In this article, we will look into this theory and understand the dual nature of matter. We will also learn the experiments that proved the dual nature of matter.
Table of Content
- What is Dual Nature of Matter
- Particle Nature of Light
- Compton Scattering
- Davisson and Germer Experiement
- Wave Nature of Matters
- De-Broglie Hypothesis
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