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Topic, Blue = classical physics Red = Quantum physics Yellow = Mathematics…

- - - - vertical polarizing filters absorb all horizontal energy, allowing only vertically polarized light to pass (horizontal ones do the same for horizontally polarized light)
        
        a horizontal filter in front of a vertical one lets no light through (making it black)
        
        Step 2
        
        The Three-Polarizer Paradox
        
        When a 45 degree filter is placed in between a vertical and a horizontal filter, it allows some light to go through (why?)
        
        When unpolarized light goes through the vertical filter, only vertically polarized light passes. When this light goes through a 45 degree filter, the filter allows half of the vertical light, making it have horizontal half vertical. When this light goes through the horizontal filter, it absorbs the vertical component of the previous light. Making only half of that light pass through
        
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        The electric part of electromagnetic
        
        each wave has an amplitude and a frequency. In an equation it looks like this:
        y = A sin (2pift) (when it starts at center)
        OR
        y = A cos(2pift) (when its starts at max peak)
        A meaning amplitude, f meaning frequency
        
        Phase shifts
        
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        T = 1/f
        
        When we add 2 opposite directions together, the vector is a superposition (sum) of both
        
        the superposition amount depends on the phase shift and amplitudes
        
        can be any directions (e.g. vertical and horizontal, diagonals etc)
        
        Energy
        
        If this was a photon, the probability of a vertically polarized photon passing through a horizontal filter would be 0%
      - polarizing sunglasses use vertical polarizing filters to block reflected horizontal rays from things like water, cutting out glare
        
        When light bounces off flat, shiny surfaces like water, the light waves flatten and line up along the horizontal axis, creating a blinding flash of glare
  - - - A cat was placed in a box with a radioactive atom. After an hour, the cat would either be dead or alive. According to some rules of quantum physics, until the box is opened (a measurement is taken), it exists in all possible states at once. The cat is both dead and alive