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Quantum mechanics describes and predicts the behavior of the smallest particles, so long as they don’t travel near the speed of light.
Beware: Quantum Mechanics is Weird 🤯¶
Saying QM is “weird” is an understatement. Don’t just take my word for it, consider Richard Feynman:
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“There are no quantum mechanicians. Electrons don’t break down, but your car does!”
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Richard Feynman, awarded the 1965 Nobel Prize in Physics for his work on quantum electrodynamics.:::
“I think I can safely say that nobody understands quantum mechanics.” (Richard Feynman)
Be prepared to let go of the comforting notion that “things make sense.” In quantum land, they often don’t! But that doesn’t stop us from mastering the logic of quantum mechanics and applying it everywhere, from chemistry to computing.
Bottom line: if you feel you don’t fully understand QM, don’t worry, you’re in good company… with everyone else!
How Does Quantum Mechanics Compare to Other Theories?¶
Even though discovered by physicists, QM isn’t just “another” physical theory like electromagnetism or relativity.
In the usual hierarchy of sciences (biology → chemistry → physics → math), quantum mechanics occupies a unique position, like the operating system on which other theories run as “apps.” Translating a theory into this OS is what physicists call quantization.
Scott Aaronson, Quantum Computing Since Democritus (2013)
Where is Quantum Mechanics Applied?¶
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Applications in Quantum Chemistry
Chemical bonds, molecular structure, reactivity, color, material properties
Spectroscopy (NMR, UV–Vis, IR, lasers…)
Modern electronic structure calculations
Condensed matter physics
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Applications in Quantum Computing
Quantum algorithms and simulation
Cryptography and security
Materials and drug discovery
What Skills Will You Gain?¶
Studying quantum mechanics will arm you with tools beyond physics:
Probabilistic thinking and comfort with uncertainty
Linear algebra + differential equations at a deeper, applied level
Ability to decode electronic structure calculations in cutting-edge research (chemistry, biochemistry, materials, astrophysics)
Insight into chemical bonding, spectroscopy, and reactivity
A more nuanced appreciation of the complex world we live in
And One More Thing…¶
If none of the above convinces you, remember: studying quantum mechanics also upgrades your meme game.
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Have a quantum joke ready for any occasion.