<center>http://orig14.deviantart.net/8ed7/f/2007/284/8/a/8a6262cb8303cf73.jpg</center>
<center>[△](http://orig14.deviantart.net/8ed7/f/2007/284/8/a/8a6262cb8303cf73.jpg)</center>

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# Between 1900 and 1930, physics underwent a major revolution with the rise of quantum mechanics, the strange new physics of atoms and particles. 

<center>https://upload.wikimedia.org/wikipedia/commons/thumb/e/e7/Hydrogen_Density_Plots.png/429px-Hydrogen_Density_Plots.png</center>
<center>wikipedia</center>

Quantum mechanics changed the accepted boundary between the possible and the impossible in unexpected ways. This is the story of the origin of quantum mechanics and a few of its seemingly paradoxical ideas. 

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# Quantum physics is the physics of the microscopic world, the physics of atoms and photons and the elementary constituents of matter. 

<center>https://upload.wikimedia.org/wikipedia/commons/a/a0/Mach-Zehnder_photons_animation.gif</center>
<center>wikipedia</center>

Quantum physics determines the sizes of atoms and the fundamental units of energy, which sets the fundamental scale of nature. 

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# In the entire history of modern science, quantum physics is the most wholesale revision of our ideas and mankinds web of beliefs. 

<center>http://izquotes.com/quotes-pictures/quote-there-is-no-quantum-world-there-is-only-an-abstract-physical-description-it-is-wrong-to-think-niels-bohr-211933.jpg</center>


Quantum theory was devised by physicists struggling to explain experimental facts that seemed on the basis of classical physics to be almost impossible. 

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# During the 19th century, physicists built up a very successful picture of the world based on Newton’s laws of motion, thermodynamics, and electromagnetism.

<center>https://d1o50x50snmhul.cloudfront.net/wp-content/uploads/2016/09/07110034/gettyimages-135731592-800x533.jpg</center>
<center>[atoms](https://d1o50x50snmhul.cloudfront.net/wp-content/uploads/2016/09/07110034/gettyimages-135731592-800x533.jpg)</center>

They knew that matter is composed of tiny atoms, although they could not yet measure their size. They considered light a wave a moving, oscillating disturbance of an electromagnetic field. Matter had been quantized but light and energy had not. 

Around 1900, this picture began to fall apart...

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END PART 1