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Understanding Quantum (Part 1): Double-Slit Experiment

· 6 · 8.1 thousand
Posted 2 years ago
Science, Double-slit Experiment, Quantum Mechanics (Field Of Study), Experiment (Literature Subject), Physics (Field Of Study), Richard Feynman (Academic), Electron (Subatomic Particle), Diffraction, Wave Interference, Wave-Particle Duality
Category: Education
Description: Double-slit experiments have been around for over 200 years. They've been the standard for drawing the line between wave and particle. Unfortunately, since Feynman used it as a thought experiment on quantum physics in the 1960s, things got weird.________________________________VIDEO ANNOTATIONSCrazy Quantum Things: http://youtu.be/grRGOBJ4lPUUncertainty Principle: http://youtu.be/skPI-BhohR8What is Dark Matter? http://youtu.be/vXJVi66qBg8________________________________COOL LINKS & SOURCESExperiment from 2012:http://arxiv.org/abs/1210.6243Articles on that Experiment:http://physicsworld.com/cws/article/news/2013/mar/14/feynmans-double-slit-experiment-gets-a-makeoverhttp://physicslight.wordpress.com/2013/03/18/feynmans-double-slit-thought-experiment-come-true/Wikipedia:http://en.wikipedia.org/wiki/Quantum_mechanicshttp://en.wikipedia.org/wiki/Double-slit_experimenthttp://en.wikipedia.org/wiki/Diffraction________________________________SCIENCE ASYLUM STUFFMore videos at: http://www.youtube.com/TheScienceAsylumVlog: http://www.youtube.com/TheNickLucidFacebook: http://www.facebook.com/ScienceAsylumTwitter: @nicklucid http://twitter.com/nicklucidTumblr: http://nicklucid.tumblr.com/Google+: http://www.google.com/+ScienceasylumMain Site: http://www.scienceasylum.com/T-Shirts: http://scienceasylum.spreadshirt.com/________________________________IMAGE CREDITSLogo designed by: Ben SharefStock Photos and Clipart- Wikimedia Commons http://commons.wikimedia.org/wiki/Main_Page- Openclipart http://openclipart.org/- or I made them myself...http://commons.wikimedia.org/wiki/File:SS-young.jpg
Duration: 3 minutes and 38 seconds
Rating: 9/10 - Excellent
Definition: HD
Published: December 29, 2014


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The Science Asylum • 2 years ago
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Latest discussion http://www.my-big-toe.com/forums/viewtopic.php?f 9&t 5333 Author of "My Big Toe" (MBT) trilogy Physicist Thomas Campbell explains what happens during the Double Slit Experiment and why it happens. "Physics has no idea of the fundamental principles that require particles to exist as probability distributions before measurement collapses the wave function to a physical particle (measured physical state). They just know that it is so. MBT derives from fundamental first principles why particles must always exist first as probability distributions. Thus MBT derives Quantum mechanics from first principles. This solution completely resolves the apparent contradiction of wave particle duality generated by the double slit experiment. MBT further shows that the same concepts (reality must always exist first as probability distributions) apply just as much to the macro world as the micro world -- it is a general principle -- not a special principle only valid at subatomic scales."- Thomas Campbell
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Joe Scott • 1 year ago
The Double Slit Experiment started as a way to determine if light is a wave or a particle - but it uncovered mysteries that have baffled science to this day. ------- This subject is really complicated, so I borrowed footage from these videos. Go check them out because they are fantastic and will help shed further light on the subject (pun intended). Veritasium Single Photon Interference https://www.youtube.com/watch?v GzbKb59my3U Veritasium original double slit experiment https://www.youtube.com/watch?v Iuv6hY6zsd0 TechLaboratories DIY https://www.youtube.com/watch?v kKdaRJ3vAmA Dr. Quantum (from the movie What The Bleep Do We Know?) https://www.youtube.com/watch?v DfPeprQ7oGc Subscribe! https://www.youtube.com/channel/UC-2YHgc363EdcusLIBbgxzg Follow me! http://www.facebook.com/answerswithjoe http://www.twitter.com/joescottwriter http://www.everythingjoescott.tumblr.com Also, you can find me on Periscope and Blab at @joescottwriter In the late 1600’s it was pretty much settled science that light traveled as a particle. There had been many experiments that seemed to back this up and it even had the support of Sir Isaac Newton. But then a physicist named Thomas Young created the double-slit experiment. The thinking was, if light were traveling as a particle, it would create 2 parallel lines on the background, because the particles that are passing through the two slits would hit the wall behind those two slits. Instead, he got an interference pattern. This can only happen if the light was traveling as a wave. But other experiments proved light was a particle. Somehow light functioned both as a particle and as a wave. This was known as the wave-particle duality. in the 1920's, physicists added another layer to the experiment when they fired photons through one at a time, amazingly still getting the interference pattern. This proved that the photons were going through both slits at the same time and interfering with themselves. This is because quantum particles travel in a wave function of potentials, only returning to the particle state when the wave function collapses. Adding to the weirdness was another extension of the Double Slit Experiment - the Which Way variation. In this experiment, they placed a tiny detector on one of the slits. Surprisingly, the pattern on the back wall of the experiment was a particle pattern. This means the wave function collapsed before it went through the slits. Why? Because it was being observed. It was the act of observing the particle that caused its wave form to collapse. This cannot be explained to this day. Yet another layer of weirdness is the Delayed Choice experiment conducted by John Archibald Wheeler. In this, he added a second double slit that changes while the photon is in mid-flight. The results showed that by changing the nature of the second slit, it altered the behavior of the particle at the first slit. In other words, this particle was being altered by things that hadn’t happened yet. Future events can change the present. When Thomas Young created the double slit experiment, he had no idea the endless stream of mysteries this would create. Who knows what mysteries still await us...
Collective Evolution • 4 years ago
http://www.collective-evolution.com http://www.facebook.com/collectiveevolutionpage Young's double slit experiment has baffled people for a very long time. What this experiment shows us is that our consciousness effects our reality in a very big way. Watch the full documentary - http://www.youtube.com/watch?v alcav1Ox9bg