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Physics In History

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22 tweets 12 reads Dec 23, 2024
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The Fascinating World of Quantum Physics : 20 key Phenomena ✍️
A Thread πŸ‘‡
1. Wave-Particle Duality: Particles like electrons and photons exhibit both wave-like and particle-like behavior, as demonstrated in experiments like the double-slit experiment.
1. Wave-Particle Duality: Particles like electrons and photons exhibit both wave-like and particle-l...
2. Quantum Entanglement: Two or more particles can become entangled, meaning the state of one particle is instantly connected to the state of the other, no matter the distance. Einstein famously called this "spooky action at a distance."
Credit: Augusto / Adobe Stock
3. Heisenberg’s Uncertainty Principle: It's impossible to simultaneously know the exact position and momentum of a particle. This fundamental uncertainty is a cornerstone of quantum mechanics.
3. Heisenberg’s Uncertainty Principle: It's impossible to simultaneously know the exact position and...
4. Quantum Superposition: Particles can exist in multiple states or locations at the same time until measured, as famously illustrated by SchrΓΆdinger’s cat thought experiment.
4. Quantum Superposition: Particles can exist in multiple states or locations at the same time until...
5. Quantum Tunneling: Particles can pass through energy barriers they seemingly shouldn't be able to cross, a phenomenon critical in technologies like semiconductors and nuclear fusion in stars.
5. Quantum Tunneling: Particles can pass through energy barriers they seemingly shouldn't be able to...
6. Planck’s Constant: Quantum physics is governed by discrete units of energy called quanta, with the size of these units defined by Planck’s constant, h.
6. Planck’s Constant: Quantum physics is governed by discrete units of energy called quanta, with th...
7. Zero-Point Energy: Even at absolute zero temperature, particles still possess quantum fluctuations, meaning they never completely stop moving.
7. Zero-Point Energy: Even at absolute zero temperature, particles still possess quantum fluctuation...
8. Quantum Computers: Unlike classical computers, which use bits (0s and 1s), quantum computers use qubits that can represent 0, 1, or both simultaneously, enabling immense computational power.
8. Quantum Computers: Unlike classical computers, which use bits (0s and 1s), quantum computers use...
9. Photons Are Massless: Photons, the fundamental particles of light, have no mass but still carry energy and momentum, as shown in Einstein’s equation E = hf.
9. Photons Are Massless: Photons, the fundamental particles of light, have no mass but still carry e...
10. Vacuum Fluctuations: Even empty space isn’t truly empty. Virtual particles constantly pop in and out of existence due to quantum fluctuations.
10. Vacuum Fluctuations: Even empty space isn’t truly empty. Virtual particles constantly pop in and...
11. Quantum Decoherence: The transition from quantum to classical behavior happens due to decoherence, where quantum superpositions collapse because of interactions with the environment.
11. Quantum Decoherence: The transition from quantum to classical behavior happens due to decoherenc...
12. Higgs Boson: The discovery of the Higgs boson in 2012 confirmed how particles acquire mass through interactions with the Higgs field, a quantum field that permeates the universe.
12. Higgs Boson: The discovery of the Higgs boson in 2012 confirmed how particles acquire mass throu...
13. Quantum Field Theory (QFT): QFT combines quantum mechanics with special relativity, describing particles as excitations in underlying fields, such as the electromagnetic field.
Image address : https://universe-review.ca/I15-38-Qfields.png
14. Bell’s Theorem: John Bell’s work showed that no local hidden variable theory can fully explain quantum mechanics, validating the strange predictions of entanglement.
14. Bell’s Theorem: John Bell’s work showed that no local hidden variable theory can fully explain q...
15. Black Hole Thermodynamics: Quantum mechanics predicts that black holes emit radiation (Hawking radiation), causing them to slowly lose mass and evaporate over time.
15. Black Hole Thermodynamics: Quantum mechanics predicts that black holes emit radiation (Hawking r...
16. Observer Effect: The act of observing a quantum system affects its behavior, famously demonstrated in the quantum measurement problem.
16. Observer Effect: The act of observing a quantum system affects its behavior, famously demonstrat...
17. Quantum Energy Levels: Electrons in atoms occupy discrete energy levels, and quantum jumps between these levels explain phenomena like spectral lines and fluorescence.
17. Quantum Energy Levels: Electrons in atoms occupy discrete energy levels, and quantum jumps betwe...
18. Quantum Teleportation: Using entanglement, quantum states (not particles) can be "teleported" from one location to another, a key idea for quantum communication.
Diagram for quantum teleportation of a photon Image address : https://upload.wikimedia.org/wikipedia/commons/8/80/Quantum_teleportation_diagram.PNG?20110212123722
19. Casimir Effect: Quantum fluctuations create a force between two close, uncharged, parallel metal plates in a vacuum, showcasing the energy of empty space.
19. Casimir Effect: Quantum fluctuations create a force between two close, uncharged, parallel metal...
20. The Quantum Vacuum: Space-time at the smallest scales is not smooth but behaves like a frothy, unpredictable quantum vacuum filled with constant fluctuations.
20. The Quantum Vacuum: Space-time at the smallest scales is not smooth but behaves like a frothy, u...
Thank you for reading !

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