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Hace 16 horas · Following up on de Broglie's ideas, physicist Peter Debye made an offhand comment that if particles behaved as waves, they should satisfy some sort of wave equation. Inspired by Debye's remark, Erwin Schrödinger decided to find a proper three-dimensional wave equation for the
Hace 16 horas · Etymology and terminology The term zero-point energy (ZPE) is a translation from the German Nullpunktsenergie. Sometimes used interchangeably with it are the terms zero-point radiation and ground state energy. The term zero-point field (ZPF) can be used when referring to a specific vacuum field, for instance the QED vacuum which specifically deals with quantum electrodynamics (e.g ...
Hace 16 horas · 1916 - Peter Debye and Paul Scherrer discovered powder (polycrystalline) diffraction. 1916 - Paul Peter Ewald predicted the Pendellösung effect, which is a foundational aspect of the dynamical diffraction theory of X rays. 1917 - Albert W. Hull independently discovered powder diffraction in researching the crystal structure of metals.
Hace 6 horas · The probability that two satellites overlap in space at a specified instant of time is called their instantaneous collision probability. Assuming Gaussian uncertainties and spherical satellites, this probability is the integral of a Gaussian distribution over a sphere.
