Not that we're finished with this guy Mathis, yet but here's another beauty …
Bill Gaede's Double Slit debunk.
This one's actually a good laugh …mainly cause of Bill's performance (and of course .. the sheer attention to detail in setting up his experiment) !
Bill was a real life Cold War industrial spy who stole semiconductor industry secrets whilst working for Intel and sold 'em to the Cuban Govt. A wonderful character reference ! His main hobby is Physics … I think he got into it whilst he was in prison.
Still, one of our beloved members, publically recommends his Double Slit refutation !
To be perfectly honest, I think you'd need a Quantum Mechanical background to refute Bill's debunk of it all (??).
Have fun & get a bowl of popcorn for this one (it runs for about 10 mins - sorry, Steven).
Cheers