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pixel01
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A young student asks me "why mr. Max Planck could find out the Planck constant. How come he could find such a small number (the Planck constant ~ 6.62 E-34). Anyone could help me to explain to the boy?
thanks
thanks
f95toli said:He fitted his experssion to experimental data, specifically data showing the frequency distribution of blackbody radiation from a source with a known temperature.
The fact that the constant is "small" doesn't matter when it comes to fitting data.
Edit: Keniwas was faster...
The Plank constant, denoted by the symbol h, is a fundamental constant in quantum mechanics that relates the energy of a photon to its frequency. It is named after German physicist Max Planck, who first introduced it in 1900.
The Plank constant is significant because it helps us understand the behavior of particles at the atomic and subatomic level. It is also used in various equations in quantum mechanics, such as the Schrödinger equation and the Heisenberg uncertainty principle.
The Plank constant is measured using various experimental techniques, such as the photoelectric effect and blackbody radiation. The most accurate measurement of h was achieved by the National Institute of Standards and Technology (NIST) using a device called the Kibble balance.
No, the value of the Plank constant has not changed over time. It is considered to be a fundamental constant of nature and its value is the same everywhere in the universe.
The Plank constant is a crucial component of quantum mechanics. It is used to describe the behavior of particles at the atomic and subatomic level and is necessary for understanding phenomena such as wave-particle duality and the quantization of energy levels.