File:Brian Cox - How The Universe Began.webm
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Size of this JPG preview of this WEBM file: 800 × 450 pixels. Other resolutions: 320 × 180 pixels | 640 × 360 pixels | 1,280 × 720 pixels.
Original file (WebM audio/video file, VP8/Vorbis, length 3 min 21 s, 1,280 × 720 pixels, 1.97 Mbps overall, file size: 47.16 MB)
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English: Quantum laser pointers brings you the infamous double slit experiment right in the palm of your hand. In 1801 English physicist Thomas Young performed this experiment to determine if light was a particle or a wave. A laser shines a coherent beam of light through a film disc containing two parallel slits. Light striking the wall behind the slits producers a classic interference pattern. This surprising result means light passes through the parallel slits not as particles but as waves. When the peaks of two waves overlap it creates a band of light. When the peak of one wave meets the valley of another, light is cancelled out. Variations of this experiment spurred public debates between Albert Einstein and Neils Bohr on the true nature of reality. It’s been called the granddaddy of all quantum weirdness. This convenient and affordable double slit laser was designed for personal enjoyment and education. |
| Date | |
| Source | YouTube: Brian Cox - How The Universe Began – View/save archived versions on archive.org and archive.today |
| Author | Quantum Laser Pointers |
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This file, which was originally posted to YouTube: Brian Cox - How The Universe Began, was reviewed on 13 February 2020 by the automatic software YouTubeReviewBot, which confirmed that this video was available there under the stated Creative Commons license on that date. This file should not be deleted if the license has changed in the meantime. The Creative Commons license is irrevocable.
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| Date/Time | Thumbnail | Dimensions | User | Comment | |
|---|---|---|---|---|---|
| current | 21:44, 16 November 2018 | 3 min 21 s, 1,280 × 720 (47.16 MB) | DriscollAmok (talk | contribs) | Imported media from https://www.youtube.com/watch?v=MffnmSXnHx0 |
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