Many of us have polarized sunglasses, but how does an optical polarizer actually block light? It has to do with the polarization of electromagnetic waves and the vibration of atoms in transparent solids.
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VIDEO ANNOTATIONS/CARDS

How Do We KNOW What Stars Are Made Of?
   • How Do We KNOW What Stars Are Made Of?  

What the HECK is Light?!
   • What the HECK is Light?!  

Why Are Some Things Transparent?
   • Why Are Some Things Transparent?  

What Does An Atom REALLY Look Like?
   • What Does An Atom REALLY Look Like?  

The First Step in Terraforming Mars:
   • The First Step in Terraforming Mars  
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RELATED YOUTUBE VIDEOS

SciShow on Polarized Sunglasses:
   • Video  
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LINKS TO COMMENTS

GussTheRabbit - Photons:
   • The First Step in Terraforming Mars  

Gayatri P - Photons:
   • What is Quantum Spin?