What Is Light?

  • Published: 15 October 2015
  • We are so used to some things that we stopped wondering about them. Like light. What is light? Some kind of wavy thing, right? Kind of.

    Short bonus video for the people waiting for new stuff.

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    What is light?

    Help us caption & translate this video!


Comments • 6 267

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    • Doom2exe
      Doom2exe  6 days back

      By far one of best channel on YouTube keep up great work guys

    • chandan baidya
      chandan baidya  2 months back

      Do light loose it's speed at any point of time
      Actually after watching videos have a idea about space travel we can definitely move faster than light need your expert advice and guide
      Waiting for response

    • Maxi Immortality
      Maxi Immortality  4 months back

      Einen wunderschönen guten Morgen😀☀😅🙃😘

  • Gacha Lel
    Gacha Lel  11 hours back

    now i love ur new intro kurzgesagt

    • ender slot
      ender slot  12 hours back

      humans: light... just how does this work?

      God: *laughs* oh wow good luck with that

      • Nicolas S.
        Nicolas S.  3 days back

        What is light?
        Baby, dont burn me.
        Dont burn me...
        ¡No more!

        • yassine achagui
          yassine achagui  4 days back

          Let's all just accept that there is a Creator

          • Pine Tree808
            Pine Tree808  4 days back

            *Gwyn wants to know your location*

            • DarkVitamins
              DarkVitamins  5 days back

              Hey, I'm dumb as fuck. Can someone explain to me why we decided c to be the ultimate speed?
              If something was approaching faster than light; We wouldn't see it before it hit us.
              If something was going away from us faster than the speed of light the photons would never reach us.
              Explain it to me as if I were 5; why do we assume our senses can measure the extreme limits of the universe, instead of the "human brain can only comprehend limits" of the universe?

              • Nasiruddin Sk
                Nasiruddin Sk  5 days back

                Impressed by the first line💝

                • I dont wanna use my name

                  So the sky is blue in the middle of the day because light less light is absorbed due to a shorter distance of atmosphere it has to travel through thus a shorter wavelength and red light is due to a longer distance thus longer wavelengths and space is black because it is a vacuum

                  • cammiecookies
                    cammiecookies  7 days back

                    baby don't blind me, no more

                    • Виталий Курилов

                      What is 6 color rainbow?

                      • 0g1f
                        0g1f  1 weeks back

                        What is light?

                        *L I G H T*

                        • Joe Mommah
                          Joe Mommah  1 weeks back

                          'what is light'
                          Baby don't hurt me
                          Don't hurt me

                          • xp0s
                            xp0s  1 weeks back

                            When the wiggly-wiggly thing has bigger size than your home.

                            • Ultimate Gaming James
                              Ultimate Gaming James  1 weeks back

                              its okay

                              • Glory !!!!!!
                                Glory !!!!!!  2 weeks back

                                That video was fast....😵

                                • Ohh LanLa
                                  Ohh LanLa  2 weeks back

                                  And thought the title said 'What is life' LOL

                                  • uncleshan
                                    uncleshan  2 weeks back

                                    this is intense 🤣

                                    • KaBluey
                                      KaBluey  2 weeks back

                                      whats faster
                                      the universe's expansion
                                      or the speed of light

                                      • Nestor Enriquez
                                        Nestor Enriquez  2 weeks back

                                        Light can be destroyed? I thought energy is neither created nor destroyed.

                                        • Elaine Paulino Garcia
                                          Elaine Paulino Garcia  2 weeks back

                                          Todas las personas que sepan que son los átomos las moléculas y los neutrones saben que es la luz y eso que tengo 12 años

                                          • as aa
                                            as aa  2 weeks back

                                            I thought we can see 400nm-700nm wave because the main component of black body radiation is on these area.

                                            • Intuser Double
                                              Intuser Double  2 weeks back

                                              Is photon of sunlight has more energy than the photon of artificial light?

                                              • DivinityOfBLaze
                                                DivinityOfBLaze  2 weeks back

                                                Baby don't hurt me,

                                                • Failed Hivemind
                                                  Failed Hivemind  2 weeks back

                                                  What is heavy then?

                                                  • RemoteControlled PotatoChip

                                                    It's the shiny thing that helps you see

                                                    • Teo H
                                                      Teo H  3 weeks back

                                                      How would the world look if we could see lower and higher frequencies? Or is that a fundamentally dumb question?

                                                      • Xenocross Prajnadeva
                                                        Xenocross Prajnadeva  3 weeks back

                                                        Wait, so visible light is another proof of evolution?

                                                        • Alvin Luk
                                                          Alvin Luk  3 weeks back

                                                          Baby don't hurt me

                                                          • Science Revolution
                                                            Science Revolution  3 weeks back

                                                            Light is visible alternating current.
                                                            Lightwaves must exist within matter.
                                                            Lightwaves are longitudinal waves.
                                                            Light is not a photon particle.
                                                            Light cannot become matter.
                                                            Light is the universe's free electricity.
                                                            Sunlight stays in Sun's plasma.
                                                            Sunlight on earth stays in Sun facing atmosphere.

                                                            How does sunlight travel through space to reach us?

                                                            Sunlight stays within the plasma on the Sun; sunlight does not travel in space.

                                                            Sunlight transfers its energy to earth instantly through an invisible giant rigid rod.

                                                            One end of the rod sets on the Sun's plasma and covers half of the Sun, while one end sets on earth's atmosphere and covers half of the earth.

                                                            That rod is made of the repulsion force between the line of sight electrons on the surface of the
                                                            Sun's plasma and on the surface of the earth's outer atmosphere.

                                                            That rod of force is, in fact, billions of times stronger than a steel rod; it locks the atoms touched on both ends as one, conducts electrical resonance between the Sun and the earth, and keeps alternating current on the Sun and on earth oscillating at the same frequency.

                                                            The same rod of repulsion force connected all the stars, moons, planets and every mass in the universe altogether, just like gravity connected them all together. Gravity pulls all matters together, while repulsion force pushes all matter apart.

                                                            Coulomb discovered repulsion force and attraction forces are like the hands of God. God holds the universe with his left hand and plays a love song with his right hand.

                                                            • Blah blah Blah blah blah blah

                                                              So, if i begin exercising and losing weight, i can travel at the speed of light?

                                                              • Sword Guy
                                                                Sword Guy  3 weeks back

                                                                It aint heavy

                                                                • Avoidmk_c
                                                                  Avoidmk_c  3 weeks back

                                                                  Kurzgesagt: 4:06
                                                                  Blind people:

                                                                  • Losusix _
                                                                    Losusix _  3 weeks back

                                                                    too fast for me

                                                                    • Google Google
                                                                      Google Google  4 weeks back

                                                                      You are perfect ..Thank you

                                                                      • Mr Unsichtbar
                                                                        Mr Unsichtbar  4 weeks back

                                                                        What is light?
                                                                        Short answer : you die

                                                                        • Darren Ross
                                                                          Darren Ross  4 weeks back

                                                                          Baby dont hurt me

                                                                          Don't hurt me..

                                                                          No more...

                                                                          • Mebin G Babu
                                                                            Mebin G Babu  4 weeks back

                                                                            What is the speed of light just after passing a viscous medium in space?

                                                                            • Junjun
                                                                              Junjun  4 weeks back

                                                                              Hehe... 5% of known world and 95% of darks, even within the 5%, men dont know why light has no acceleration and said they surely no god. Im not saying there is god, Imsaying within your vaguely 5% knowlegde you surely taking too much assumptions.

                                                                              • Kwinam Martinez
                                                                                Kwinam Martinez  4 weeks back

                                                                                1. Get a stick the length of the earth
                                                                                2. Get on top of the stick
                                                                                3. Spin stick at 480 rpm. (8 times per second)
                                                                                4. Since light goes around the diameter of the earth 7.5 times per second, and you're spinning the equivalent of 8x the diameter of the earth per second, you're going faster than light

                                                                                • eggmar54
                                                                                  eggmar54  4 weeks back

                                                                                  Really enjoyed this simply put , yet informative treatise on light . Thank you ...have subscribed .

                                                                                  • Trek
                                                                                    Trek  4 weeks back

                                                                                    If light is just the way we see around then why don't we see in the dark, i mean why don't we adopt to see frequencies that help us in low lit areas, more then we can already

                                                                                    • GameSeekr041 Contreras
                                                                                      GameSeekr041 Contreras  4 weeks back


                                                                                      Justca prank bro

                                                                                      • Alan S
                                                                                        Alan S  1 months back

                                                                                        2164(49), 4/19/2013(1290), 28(5), 2062(2…3), 2061(1…2), 2049(3…4), 5/1/2011, 5(1), 2(28), 15-22, 5841(2080-2081), 532, 2071(4…5), 2097(2…3), 91(1290), 5-2(1290), 72(92), 5/31/2019(12), 7/5/2019(7.1), 3/6/2019-4/20/2019(46), 28(1290), 2/14/2018-3/31/2018(46), 5-2(1), 2063, 4, 928, 2063(3...4). [23(10)22(7-5)8]. [46(20)44(7-14)88]. [61(27)61(7-20)885]. [69(30)66(7-23)888].

                                                                                        • Ajay Anand
                                                                                          Ajay Anand  1 months back

                                                                                          What is the mass of photon?

                                                                                        • S A
                                                                                          S A  1 months back

                                                                                          Ok but what is a particle?

                                                                                          • Mr.Minzer
                                                                                            Mr.Minzer  1 months back

                                                                                            Is light made of atoms?
                                                                                            I just had a epiphany and need answers.

                                                                                            • Jason14500 A
                                                                                              Jason14500 A  1 months back

                                                                                              Have a blessed day!!