Planck Time - The shortest measure of time

Learning Curve
Learning Curve
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2021-12-22に共有
We have looked at the smallest thing in the universe and I think my head has recovered from that, so what about the shortest amount of time possible. This is Planck time and is very strange indeed, let’s find out more.

Planck time is defined as the time taken for light in a vacuum to travel 1 Planck length. Now I’ve already made a video about the Planck length that you can go and watch, but spoiler alert, the plank length is really tiny. That means that the time taken for light to travel across 1 Planck length is very short indeed. In fact it is 5.39 times 10 to the minus 44 seconds. That’s about this much. OK so we’re going to try and imagine just how mind meltingly short the plank time is, but just like we did with the Planck length we’re going to get there in stages.
コメント (21)
  • @is_bolo_e_cha
    Planck was such a shortsighted man, he could never go very far thinking so small.
  • @jamesmatthews8881
    One Planck time: roughly the time between starting a new job and realising it's not all it's cracked up to be.
  • @rightwingsafetysquad9872
    Minor correction, kinda off the main topic. Each cone in the eye updates around 40-50 times per second. Each rod updates almost twice as often. But not all rods and cones update at the same time which means that as a whole the eye is much faster. Most people can perceive an improvement in a screen's refresh rate up to 100Hz. About 20% of people can perceive an improvement up to 144Hz. But people can generally react to screen refreshes faster than they can perceive. Elite gamers perform better with screen refreshes up to 300Hz. This is different than a game or video having 300fps, it's about how soon you are shown a change rather than how frequently you are shown changes.
  • @potatocannon4
    “Avoiding the obvious jokes” was not expecting that gold in a physics video🤣🤣🤣
  • @MountainRaven1960
    The Zeptosecond should be followed by the: Harposecond, Chicosecond, and the Grouchosecond! That’s because it’s all ridiculously small.
  • @Yezpahr
    3:09 Luckily we discovered that people who use monitors with much higher frames per second (165-240Hz), can actually see the frames in between. Some really can't see a difference between two monitors of 30Hz and 60Hz, but that same person will notice it if you let them compare monitors with 60Hz to 165Hz. (a difference of 105 instead of 30) We're not just apes, we're complicated inventors and learners, capable of nullifying our own intelligence or boosting it with school, "trains of thought" and experiments, or just "because we're told". The researchers that decided 30-60Hz was the max did not actually use monitors with higher capabilities and just drew a line there. (-edit: they might've used lamps instead of screens in some cases?)
  • @bill392
    We could truthfully say that our arms actually never stop moving. In fact, nothing ever stops moving. Another super interesting presentation, thanks.
  • @jlwilder8436
    Such great visualization! I'm one of the original subscribers and viewers and can't believe this channel hasn't hit hundreds of thousands of views yet. Come on, people!
  • @Coastfog
    The first video of yours I watched and I'm getting "gonna enjoy this channel a lot" vibes. Interesting topic, really good communication of the science, and a very likable and professional style. Looking forward to seeing you grow!
  • @alecisla
    Amazing video, awesome channel, I'm watching all the videos, pure science, straight to the point, no clickbait... we need more channels like this! Thanks for your amazing work! Subbed and liked!
  • @rightwingsafetysquad9872
    I think the quantum model of the universe does a good job of describing a moving object traveling less than the speed of light. There is a certain probability that a particle will jump a Plank Length during any given Plank Time. With a photon that probability is near 1. With "normal" objects that probability is near 0, but not 0. I propose a new fundamental aspect of the universe. The Plank Probability. That is the smallest possible probability that a particle will jump a Plank Lenght in any given Plank Time. It would describe the slowest possible motion.
  • @nehoymenoy3845
    God this is an enjoyable series. Thank you for your work on this. I know it can't have been an easy project.
  • @OVAstronomy
    Great explanations and examples, that ending has really made me consider the uncertainty of spacetime differently!
  • @yallprettysus
    I am really enamoured with the way you say thank you for watching! I feel that you appreciate each and every viewer as I deeply appreciate the way you present these borderline science topics! You are a great person with an awesome talent and I am happy to follow you through te wonders of our universe ❤️
  • @sourcecode6467
    Explained and illustrated beautifully, mind blown. Thank you 👍
  • @hummakavula1304
    This video is exactly what I am looking for! I need to keep pausing though because of the jam-packed information. This is exemplary! Thank you so much for the effort! Subscribed!
  • @scarv9584
    1:26 this is why i love this channel, little jokes but the info is explained well and in an amusing effort to learn. Perfect delivery of education
  • @OnlyTrueNeko
    now that is a video that just blew my mind.. i barly was able to visualise the planck times in a second and was amazed by how small this truly is~ VERY well done video! earned a sub and like