ab initio

[yluo]

We call quantum mechanics an ab initio model because modelling physical properties using its laws will result in a recreation of the observed properties in real life, without a need for experimental data or empirical parameters. Similarly, classical mechanics can be fully modelled from Newton’s laws, making it ab-initio just as I described. Classical electromagnetism can also be considered ab-initio, as its phenomena can be modelled from first principles like Coulomb’s, Lorentz’s, and Gauss’s laws.

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