Planck's constant, denoted as , is a physical constant used to describe the quantum size. Playing an important role in quantum mechanics, Max Planck discovered in 1900 when studying the laws of thermal radiation of objects that it was only assumed that the emission and absorption of electromagnetic waves were not continuous. Planck's constant is a basic physical constant in quantum physics, usually represented by the symbol **h**. Its value is approximately **6.626 × 10⁻³⁴ j·s**, and this constant plays an important role in the mathematical formula of quantum mechanics [1] [2]. In response to World Quantum Day, the Quantum Open Academy editorial office translated the educational poster (an open educational resource) produced by the National Institute of Standards and Technology (nist) into Chinese.
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Planck’s constant, fundamental physical constant characteristic of the mathematical formulations of quantum mechanics, which describes the behavior of particles and waves on. Planck's constant, denoted as h, is a physical constant used to describe quantum size. Playing an important role in quantum mechanics, Max Planck discovered in 1900 when studying the laws of thermal radiation of objects that it was only assumed that the emission and absorption of electromagnetic waves were not connected.