The discoveries of the 19th century, both the successes and failures, set the stage for the emergence of quantum mechanics.
Beginning in 1670 and progressing over three decades, Isaac Newton developed and championed his … 展开

Quantum mechanics developed in two distinct phases. The first phase, known as the old quantum theory, began around 1900 with radically new approaches to explanations physical phenomena not understood by cl… 展开

The end of the first era of quantum mechanics was triggered by de Broglie's publication of his hypothesis of matter waves, leading to Schrödinger's discovery of wave mechanics for matter. Accurate predictions of th… 展开