Someone is Watching You

Transcript

00:00how could a photon know if someone is watching i cannot explain to you what you're about to see

00:07that's because no one on earth understands it yet if you can't live with that then you're not going

00:14to be happy with what lies up ahead left slit right slit another right slit left slit if we

00:21watched them all day long the pattern would be random about half would go through either slit

00:30wait a second where are the waves where's young's interference pattern

00:43this is where the weird begins okay photons keep on coming this time we promise not to look

00:53you're not going to believe this but we can change the pattern on the far wall

00:57simply by not watching which slit the photons pass through i know it sounds crazy but in every

01:04trial ever conducted the outcome depends on whether or not the experiment was observed

01:19so the reason we didn't get the interference pattern earlier wasn't because we chopped up the

01:23light into single photons it was because we were observing which slit the photons passed through

01:37you