The Double Slit Experiment: Part 1 of 8

Illustrated presentation of quantum mechanics & the double slit experiment. Wave-particle duality meets information theory. And it's fun!

Category:

Howto & Style

Tags:

• quantum
• physics
• double
• slit
• information
• theory
• reality

[MeriaDuck]

can we please keep talking about the video rather than start the billionth id versus evolution debate?

The double-split experiment proving the reality of quantum physics is one of the great wonders of the 20th century.

[lopytube]

something so important and we cant even get good sound quality.

[shellybirdy]

very interesting thanks

[frightenedsoul]

I wish he'd stop asking the audience stupid questions.

[kevinstuartfr0st]

young's double slit experiment like you've never seen before

watch?v=yNeHYhvQXic

[MewCat100]

@kill3465 Absolutely the detector interferes. the detector requires that photons come into contact the the electron (or some other form of EM energy). That necessarily interferes with the electron.

[kevinstuartfr0st]

double-slit experiment ,interference pattern OR coherence pattern

watch?v=WC6LkdBLG1k

well worth a look,it might get some people thinking :)

[me835]

@Zee96969696 There really is no medium. for a time people believed in the "luminiferous ether" which would act as a medium for light. then we tried to measure our velocity relative to it by measuring the speed of light at different times of the year. turns out light always moves at the same speed no matter how you're moving. I dont understand it fully either, but its just the way it is.

[chrisofnottingham]

@dvholston "I don't understand what's so impossible about double slits"

Single photons are always detected on the back screen as particles.

If you don't detect which slot the photons go through

1) they hit in places not lined up with the slit

2) the accumulation of their distribution is a diffraction pattern.

When you put a detector on one of the slits the pattern changes to two stripes which line up with the slits.

There is no classical reason why having detectors wld affect the results.

[bl0bl1bl4]

@DizzyGillespie Im not sure, but I tink electro-magnetique field is not the medium, because it would mean that you sould have a constant electro-magnetique field on the path of the ''light''. It's actually a magnetique field and a electrique field that alternates.

[DizzyGillespie]

@dvholston with very low intensity light, you can see the pattern developing in a quantized manner. Like point by point. pretty strange.