Help Keep PTSOS Going, Click Here:
Dan Burns explains his space-time warping demo at a PTSOS workshop at Los Gatos High School, on March 10, 2012. Thanks to Shannon Range from the Gravity Probe B program for creating the original demonstration which he shared with Dan in 2004.
Information on how to make your own Spacetime Simulator can be found here:


    • Marek Wasik
      Marek Wasik

      Idk man looks like a comfortable bed a homeless man could be sleeping in rn

      about 2 hours ago
    • swedisheinherjer

      Teacher lvl 100 Legendary.

      about 3 hours ago
    • S. Carl
      S. Carl

      gravity is BS to convince you the earth is a ball

      about 10 hours ago
    • FIGJAM

      very gay

      about 17 hours ago
    • Manisha jadhav
      Manisha jadhav

      he should be my physics sir

      about 17 hours ago
    • Seagoer

      ok youtube i watched it now stop recommending

      about 1 day ago
    • Marcos Augusto Ferrarini
      Marcos Augusto Ferrarini

      Very good lesson, teacher. Congratulations

      about 1 day ago
    • Johnathan Miller
      Johnathan Miller

      well what about the other theory the says gravity is actually a force , which explains all of the same things?

      about 1 day ago
    • Dalwinder Singh
      Dalwinder Singh

      Instead of marble he should use some metallic object which can develop current by it's own

      about 1 day ago
    • Dalwinder Singh
      Dalwinder Singh

      Einstan was great ...with idea of third dimension

      about 1 day ago
    • Dalwinder Singh
      Dalwinder Singh

      Because each planet has also metallic property and by rotating they develop current and so magnetic forces and hence do not looses energy and so keep on rotating in the solar system

      about 1 day ago
    • simon Collis
      simon Collis

      Bends time. people it's this!! Some things are denser than the medium they are in. Ie; a rock is denser than water so it sinks. What this goof is postulating and trying to warp those kids minds is hocus pocus theoretical BS. his own crappy experiment just failed. Wake up folks. Please

      about 1 day ago
    • mustafa mohamed
      mustafa mohamed

      i actually wanna cry. i wish my teacher was as smart and fun to learn anything with him/her

      about 1 day ago
    • Tech Gaming
      Tech Gaming

      Who had seen it after chandrayan 2

      about 1 day ago
    • KingOreo2017

      so what im getting from this is that spandex makes up spacetime

      about 1 day ago
    • InamberI

      5:01 Lets see how universe was made...

      about 1 day ago

      am i the only one who thinks this guy sounds like rick from rick and morty??

      about 2 days ago
    • George G
      George G

      nice balls nigga

      about 2 days ago
    • luisvega666

      i like how he said that god decided for me all those scientis experiments just prove there is creator not other way around

      about 2 days ago
    • Baato

      but i wanna play mr burns

      about 2 days ago
    • Derrick McMillon
      Derrick McMillon

      still don't believe it.....................

      about 2 days ago
    • abdo Ch
      abdo Ch


      about 2 days ago
    • Umesh Thorbole
      Umesh Thorbole

      Why this professor is not in my college. 😅

      about 2 days ago
    • saitama ;
      saitama ;

      Why it will not loose energy in solar system??

      about 2 days ago
    • nounoufriend
      nounoufriend In reply to saitama ;

      Friction is why it looses energy but in space there is no friction

      about 1 day ago
    • Alessio Angeloro
      Alessio Angeloro In reply to saitama ;

      My guess is that even tho it might not seem, our solar system is costantly moving. Even the Sun is moving. In this representation the most constistent mass is still so the little balls are losing energy. But I'm not an expert nor I study phisycs so I might be wrong.

      about 2 days ago
    • Mama Habib
      Mama Habib

      Sadly professor i belive you might be wrong i am not a scientist i am only a person who adore reeding nature
      Black hols one kind of it may be a stage after super nove or after the dwarf stage with extrem more heat & gravity
      Or only extreme gravity i could not under stand the protrudeing element you did if you want to understand space wright then it should be in water ask the astronauts on the net the nearest feeling in space is more to the swiming than the fabric deferent lows deferent physics

      about 2 days ago
    • Hypernova
      Hypernova In reply to Mama Habib

      Uh, English please?

      about 2 days ago
    • John Harrigan
      John Harrigan

      This is a beautiful teaching device, to give students the sense of understanding space/time ... which cannot be understood. In reality, this is not what is happening. The fact is, we don't know what is happening, in terms of physics and math, regardless of how Einstein explained things in human terms. In physics, we have mathematical equations, that at best, can predict physical behavior. To attribute grand schemes of human imagination to these equations, is tempting ... but not accurate. (The same goes for quantum mechanics. When someone explains quantum mechanics, in human terms, they are explaining their explanation, and nothing else. It is as flawed theory that makes little sense, yet has predictive value.) -- The reality is that this video is a sheet in a classroom, that crudely mimics a bit of what we see with gravity, yet it does not really demonstrate anything beyond what it is ... a sheet and balls interacting in a room. -- If you see this and say, "Oh, I understand space/time"; you don't. There is nothing in the math of space/time that says anything "warps," - the word, "warp" is a human attribute. Math does not talk or use the word "warp," and that's important to understand. The math equations of space/time do not explain anything; they predict experimental outcomes with utility, yet with flaw. -- In teaching, we should have the courage to explain that we don't really know. An over-explaining approach gives students a false idea of what physics and math are. We should not anthropomorphize (or reality-morphize) equations and pretend to students we know something we do not know. -- Further, it is entirely possible that math, a human construct, does not accurately describe anything. Most likely another system of prediction and discovery, more accurate and advanced than math, will replace math, as conscious beings evolve and improve our awareness. Reality is not math or the way humans think: this is like a dog thinking he knows what reality is because he has discovered some predictive schemes to his world ... and dogs do, in fact, have predictive explanations of the world that are "accurate" and enable them to survive, as does an ant. -- A student will know much more about reality, if we clearly explain to them what science and math are, and are not. It is Ok, to tell students that we do not know, that physics does not explain what something is. An honest, "we don't know" will lead to much better science and further discovery. -- There is a grand difference between predictive equations and "knowing." The reality may be that reality cannot be "known" in the sense we seek to know it. The idea of "knowing things" may be a flawed and egocentric construct that is produced by a lack of evolved intelligence, especially if we are the ones creating reality. If we are the one's creating our physical reality, then seeking to know what we have created will always be a false and fruitless pursuit ... when there is nothing, in reality, to discover but ourselves.

      about 2 days ago
    • Homieboy Seventeen
      Homieboy Seventeen In reply to John Harrigan

      Me. 2am. Somewhere in Ghana, West Africa. Questioning my existence while reading this entirely.

      Knowing, Even the top scientists, astronomers, physicists etc, with all their mathematical equations, don't "really" know how or why we exist and what we exist on..

      Makes me feel so small😶

      about 1 day ago
    • Ely Masnsen
      Ely Masnsen

      This clearly shows how much we are insignificant comparing to the creation of the universe, even our understanding is so narrowed

      about 2 days ago
    • William Singht
      William Singht

      Tesla had another model more logical and accurate, than this Einstein bullshit explaining gravity with... gravity.

      about 2 days ago
    • William Singht
      William Singht

      So this gravity model says: the balls are attracted due to... gravity LOL ! Because balls roll into cavities due to the force of gravity: the reaction force of the support is not directed vertically upwards, counteracting gravity, but perpendicular to the curvature of the cavity (as a radius), which means the sum of the forces pulls the body into the cavity. So, to explain the gravity we should have... gravity LOL. It seems modern physics is totally mathematical fantasies irrelevant to the reality. And stills no any evidence of curvature of spacetime, like no evidences that space is something more than emptiness.

      about 2 days ago
    • Piotr Fidler
      Piotr Fidler

      woman checking in 5:02 how to wash this blue material pls become my wife

      about 3 days ago