What Is Light Actually Made Of? The Quantum Reality

Comments · 45

• PI

  @Pi_in_Motion · 1 month ago · pinned

  Light is something we experience every day, yet it may be one of the hardest things in physics to picture honestly.<br><br>What idea have you always had about what light actually is? Did you imagine a stream of tiny particles, a wave moving through space, or something else entirely?<br><br>Which moment in the video challenged that picture the most? Was there an explanation that finally made the pieces fit together? And is there any part you still disagree with—or want explained more slowly?<br><br>And what other topics in physics or mathematics would you like to see us investigate?

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• DA

  @davidhunt4291 · 13 days ago

  By far most accurate vid on utube. Esp regarding Young

• DA

  @davidhunt4291 · 13 days ago

  Young used a playing card &nbsp;with <br>The thin card edge on to light source

• EC

  @EclairDePhysique · 1 month ago

  best information

• JE

  @jeffreykragten5494 · 1 month ago

  I have no idea why your videos get so few views, they’re always great.

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• FA

  @faiza7740 · 1 month ago

  Fantastic 👍 👌👏

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• TO

  @tonibatalla9799 · 1 month ago (edited)

  Best vid on the nature of light I&apos;ve seen so far. Awesome.<br>Viewers should understand however that this is not (can&apos;t be) the last word on the subject. We still need a plausible explanation on the &apos;duality&apos;. We still can&apos;t understand superposition, quantum measurement, entanglement, the physical nature of the wave function, or which path is followed at the double slit. When we have a correct but incomplete theory, one thing is certain: we will sooner or later run into contradictions with observations. (this is a conjecture, of course). Thanks for the illuminating video, no pun intended

• MI

  @MitchRaemsch · 1 month ago

  Einstein said no to his photon in 1937. He could no longer reconcile a particle with a wave of light. He said instead light was a spherical wavelet.

• DA

  @David-r9e3w · 1 month ago

  Light is a cluster of expanding electrons. QM classicalised in 2009. Nothing to see/ lear(n) here.

• N1

  @N1iluvatar · 1 month ago

  Interesting and great as always (even while i didnt understand everything)!<br><br>Hoping for a collab with veritasium

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• KH

  @khanhinfor · 4 weeks ago

  Perhaps we are misunderstanding. Light is a pressure wave in the aether medium. A wave is continuous, not a discrete photon.

• JA

  @jaybingham3711 · 3 weeks ago (edited)

  <a href="https://www.youtube.com/watch?v=veM24sF2_Oc&amp;t=978">16:18</a> Photon was first used in 1916 by the American physicist and psychologist Leonard T. Troland for a unit of illumination of the retina and in several other contexts. Later, the term was wholly embraced by the field of physics. Come 1926, Lewis gets credited for popularizing the usage of photon. But that&apos;s only because the field of physics dominates science. Notwithstanding, Troland as originator of the term deserves way more credit than he typically gets. As for Einstein, he continued to just call it light quanta.<br><br><a href="https://www.youtube.com/watch?v=veM24sF2_Oc&amp;t=1870">31:10</a> Yep, a quanta of light...one single photon...interferes with itself. This is a quintessential indicator that the quantum realm is something unique...and unalike...the classical realm of our everyday experience. Because they are distinct, we would do well to not shoehorn classical words onto things quantum. A photon should not be referred to as a particle. Obviously, a classical particle is never going to interfere with itself. A better word is wavicle. A photon is a wavicle...an object with no correspondence to any classical object. Now there&apos;s no baggage that wavicles act weird with respect to of our classical intuition. It&apos;s exactly as it must be if the quantum realm is in fact a legit, distinct realm of its own. Which it undisputedly is.

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