The Birth of Quantum Physics
In the early 1900s, scientists such as Max Planck, Albert Einstein, and Niels Bohr began to notice that the laws of classical physics could not explain some of the behavior of light and matter.
For example:
Why do objects emit only certain colors when heated?
Do electrons behave as both particles and waves?
Why did some experiments show that particles "knew" that they were being observed?
These strange observations led to the development of quantum theory - a radical new way of understanding nature at its smallest scales.
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