can the double slit experiment be performed with systems other than light?
Yes. Some of them even at home.
Make a double slit of carton (slits 1cm wide, separated by 10cm), install it in your bathtub, and play with water waves.
Make a double hole in a sheet of rubber foam and play with sounds generated by small loudspeaker.
...and some experiments demanding more serious lab: with electrons, or even atoms.
@xts that is really cool
Also electron beam. That's quite interesting.
Although not a for a double slit you may find this interesting:
You can observe interference if you shoot C60 molecules at a multiple slit. The "Buckyball" molecules consist of 60 carbon atoms, so quite big molecules.
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