stem/Light.md
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STEM/AI/Classification/Classification.md
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STEM/AI/Classification/Random Forest.md
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STEM/AI/Neural Networks/Learning/Hebbian.md
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STEM/AI/Neural Networks/Properties+Capabilities.md
STEM/AI/Neural Networks/RNN/Autoencoder.md
STEM/AI/Neural Networks/RNN/Deep Image Prior.md
STEM/AI/Neural Networks/RNN/LSTM.md
STEM/AI/Neural Networks/RNN/MoCo.md
STEM/AI/Neural Networks/RNN/RNN.md
STEM/AI/Neural Networks/RNN/Representation Learning.md
STEM/AI/Neural Networks/RNN/SimCLR.md
STEM/AI/Neural Networks/RNN/VQA.md
STEM/AI/Neural Networks/SLP/Least Mean Square.md
STEM/AI/Neural Networks/SLP/Perceptron Convergence.md
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STEM/AI/Neural Networks/Training.md
STEM/AI/Neural Networks/Transformers/Attention.md
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STEM/CS/Quantum.md
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STEM/Quantum/Confinement.md
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STEM/Speech/Linguistics/Consonants.md
STEM/Speech/Linguistics/Language Structure.md
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STEM/Speech/Linguistics/Terms.md
STEM/Speech/Linguistics/Vowels.md
STEM/Speech/Literature.md
STEM/Speech/NLP/NLP.md
STEM/Speech/NLP/Recognition.md
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Work/Tech.md
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---
tags:
- quantum
---
$$E=hf$$
## Photoelectric Effect
- Emission of charged particles when exposed to UV light
- Electrons
- Einstein suggested light is quantised
1. The maximum KE of ejected electrons is independent of intensity, but dependent on frequency $n$
2. There is a minimum frequency n0below which there is no emission
3. No time delay (less than 1 ns) before the onset of emission but the rate of electrons depends on the intensity.
![photo-electric](img/photo-electric.png)
![fermi-vacuum-level](img/fermi-vacuum-level.png)
![em-spectrum](img/em-spectrum.png)
- Radio spectrum
- 30Hz 300 GHz