```On that
site, the basic interferometer is shown as in figure 1
and it is explained that interference between the
two paths ensures that the photon always strikes
detector A. ```

what gives rise to classical realism is the fact that quantum information leaks and smears out into the environment in a redundant way that's hard to eradicate. this gives rise to the classical consistency and behavior our intuition expects

https://cdn.discordapp.com/attachments/634367565304561675/654553828686823444/machzehnder.gif

@fuguer memory/habit

Why would changing the length of one of the routes change which detector it hits?

because changing the length of the routes affects the phase of the light

it means the photons from the two different paths are no longer exactly interchangable

https://tenor.com/view/girl-beat-girl-vintage-1960-dance-gif-14289925

thats a diagram of the quantum eraser

uses a beam splitter crystal (BBO) to split one photon into two entangled photons

Does the interaction make it a wave or something, why is that important that they interact?

then by inducing a different polarization on the left and right slits, you can tell if the polarization matches and which path the photon took

because particles interact with themselves

thats what we mean when we say quantum particles act like waves

https://www.youtube.com/redirect?event=video_description&v=vOv8zYla1wY&q=http%3A%2F%2Fwww.univie.ac.at%2Fqfp%2Fpublications3%2Fpdffiles%2F1994-08.pdf&redir_token=YXUmr5A6cF9GN9ACnj29s5kBsWx8MTU3NjIxNTQ3NkAxNTc2MTI5MDc2&html_redirect=1 Paper on interaction free experiment

a single photon interacts with other versions of itself and this is responsible for most of the fundamental properties of light such as least action principle, snells law, inertia, etc

did this shift from god to QM

I'm just trying to follow

Feynman explains this all in a way that will blow your mind if you watch his QED video series

REEEE

consider light reflecting off a mirror, ever wonder why it always reflects at angle of incidence?

No

because that's the shortest path, and if you consider the contribution of all other paths, they create destructive interference

@Wan6Saber she'd get over powered and defiled in war

the only path without interference is the shortest path

@Deleted User wrong

She'll only get defiled in bed <a:zoom:496262340258299904>

there and the kitchen

are where she belongs

not on a battle field

They won't listen

snells law, the formula for determining the angle that light is bent by lenses/water/materials... its simple the light is just always taking the shortest path

but ask yourself, how does the light know the lens is there before it gets there?

it takes all paths

Ok, so there are two paths. The particle is detected in one. Why does interaction cause it to go through the other?

The beauty of the Jewish woman shall not perish from this earth

and all paths but the shortest path get destructive interference and are very unlikely to ever be observed