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    Einstein's explanation of the photoelectric effect provided crucial evidence for the quantization of light and earned him the Nobel Prize in Physics in 1921. ([phys.libretexts.org](https://phys.libretexts.org/Bookshelves/University_Physics/University_Physics_%28OpenStax%29/University_Physics_III_-_Optics_and_Modern_Physics_%28OpenStax%29/06%3A_Photons_and_Matter_Waves/6.03%3A_Photoelectric_Effect?utm_source=chatgpt.com)). 
 
 
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+8. **Niels Bohr (1913)**  
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