Quick D: Static Helicopter Blades

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  • Published: 12 August 2019
  • Captain Disillusion gets pedantic about the description of a common camera effect.

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    Video being discussed: https://www.youtube.com/watch?v=yr3ngmRuGUc
    Guest - Matt Parker: http://www.youtube.com/standupmaths
  • Entertainment Entertainment

Comments • 2 811

  • RJK
    RJK  1 days back

    Stopping the fan blade looked so hilarious 3:55.

    • Cringe Gaming 64
      Cringe Gaming 64  1 days back

      3:55
      *Strongk*

      • Absolute Bullshit
        Absolute Bullshit  5 days back

        Why not just make it 0 frames per seconds that would make it still too

        • Karl Rodriguez
          Karl Rodriguez  6 days back

          Do 9-11 video

          • Battle Master
            Battle Master  7 days back

            sometimes fast-moving weels look like they are moving slowly in the opposite direction

            • Tess Miller
              Tess Miller  2 weeks back

              You need to debunk the dude who flies around on that circular little copter that he rides on

              • Stumb'LED
                Stumb'LED  2 weeks back

                Captain, one more to prove it's fake xD
                https://www.youtube.com/watch?v=3WAMhZwdvnc

                • The ociramma
                  The ociramma  2 weeks back

                  Sold for 6.9 million ...nice

                  • Crazy Chunk
                    Crazy Chunk  2 weeks back

                    This is incorrect or at least not accurate: the camera could also take a frame every time the rotor rotated 72°x2 or x3 etc. Could be at least.

                    • Gummy
                      Gummy  2 weeks back

                      Seizure warning probably woulda been a good idea.

                      • Peter
                        Peter  3 weeks back

                        Captain d you are a true pimp

                        • sbatou87
                          sbatou87  3 weeks back

                          Please include a strobe warning for this video.

                          • 박종서
                            박종서  3 weeks back

                            There’s a series of flat-screen displays in the tunnels metro system of Seoul that looks stationary despite the train moving

                            • AmirPlayZ
                              AmirPlayZ  3 weeks back

                              yea it's big brain time

                              • Balaka Chakroborty
                                Balaka Chakroborty  3 weeks back

                                Okay thats basically slo mo damnit!

                                • Nathan Rodriguez
                                  Nathan Rodriguez  3 weeks back

                                  What if it is a balloon replicated into a helicopter

                                  • Kelly Mendez
                                    Kelly Mendez  4 weeks back

                                    They are green.

                                    • Kelly Mendez
                                      Kelly Mendez  4 weeks back

                                      CD, at 2:55, look at your knees.

                                      • Josh Wah?
                                        Josh Wah?  4 weeks back

                                        Not related, but I saw a plane really low and it was just floating there...

                                        • Kitten Shuttles
                                          Kitten Shuttles  2 weeks back

                                          That can happen under the correct circumstances, maybe

                                        • Matthew Cain
                                          Matthew Cain  3 weeks back

                                          @Tigreal Main They don't. They disguise themselves as aeroplanes. :P

                                        • Tigreal Main
                                          Tigreal Main  3 weeks back

                                          What if alien spacecrafts disguise themselves as airplanes?

                                      • Trampoline Fire
                                        Trampoline Fire  4 weeks back

                                        So you said it that Fake or real

                                        • Alexander the ok
                                          Alexander the ok  4 weeks back

                                          fun fact: if a helicopter engine starts up, you can see - no matter what frame rate(even with your eyes)- that the blades start spinning in one direction, some weird flashing, moving in the other direction, slowing down, and all that again a few times until the rotor reached the normal rpm.

                                          • Travis Ladegast
                                            Travis Ladegast  4 weeks back

                                            I was able to produce something similar with a store bought LED flashlight, and Variable Frequency Drive (VFD) controlled Industrial Fan (impeller style fan) Motor. Since was able to adjust the frequency to 1/1000 Hz (between 0/60Hz), I was able to accurately match the LED's oscillation so that the fan looked stationary at multiples of the resonance (may be the wrong word, but it feels correct to me) frequency.

                                            • Sabber
                                              Sabber  4 weeks back

                                              He should make a debunk of his own channel effects.

                                              • Sabber
                                                Sabber  2 weeks back

                                                : 0

                                              • Iggy
                                                Iggy  3 weeks back

                                                Sabber there are no channel effects it’s all real

                                            • Keegan Parrish
                                              Keegan Parrish  4 weeks back

                                              my grandma liked this video so much she is break dancing on the floor!

                                              • Mikki
                                                Mikki  4 weeks back

                                                that fan is the same fan that i have lol

                                                • carlo ruperez
                                                  carlo ruperez  4 weeks back

                                                  Does our eyes have have shutter? Like when you look at a speeding car wheel? Then weird things happen?

                                                • Tomas Pompolo
                                                  Tomas Pompolo  1 months back

                                                  *LAG*

                                                  • What's a Creel?
                                                    What's a Creel?  1 months back

                                                    Matt Parker = Immediate thumbs up :)

                                                    • Obs.P4TRICK
                                                      Obs.P4TRICK  1 months back

                                                      Is this 1995 video why the theme so 90's

                                                      • Shreerang Vaidya
                                                        Shreerang Vaidya  1 months back

                                                        Now that I have been watching this for a year, it feels like a T.V. show

                                                        • SUPERNIGHTMARE22 SM22
                                                          SUPERNIGHTMARE22 SM22  1 months back

                                                          Who else saw the falling fan joke coming from a mile away?

                                                          • SpicyBoyzGarage
                                                            SpicyBoyzGarage  1 months back

                                                            I guess most people are too young to ever use a timing light on an old car.

                                                            • Exlr8ing
                                                              Exlr8ing  1 months back

                                                              People with epilepsy be having seizures right now 1:39

                                                              • Ahokas
                                                                Ahokas  1 months back

                                                                But how tf does the helicopter stay in air if the blades arent moving?!?!?

                                                              • Rafiul Haque
                                                                Rafiul Haque  1 months back

                                                                https://youtu.be/kntNx-snI2I
                                                                plz check this and tell me if it's real

                                                                • Sage Molnar
                                                                  Sage Molnar  1 months back

                                                                  This dude's face makeup is wack, wtf lol

                                                                  • Elielson Nascimento
                                                                    Elielson Nascimento  1 months back

                                                                    great video! thanks captain ! you're the best

                                                                    • Szpieg 2000
                                                                      Szpieg 2000  1 months back

                                                                      3:15 camera is fake isnt it?

                                                                      • super autismo
                                                                        super autismo  2 months back

                                                                        3:54 JESUS

                                                                        • extraE MONTAMONTES
                                                                          extraE MONTAMONTES  2 months back

                                                                          The production values of this video are unprecedented in youtube

                                                                          • MicEdge
                                                                            MicEdge  2 months back

                                                                            *My physics teacher showed this to me in class, and even he gave the wrong explaination.*

                                                                            *I think i have to quit studies and watch YouTube*

                                                                            • gottarunmemeboi lolz
                                                                              gottarunmemeboi lolz  2 months back

                                                                              In every video, i know the words, just not in the order you put them in

                                                                              • Hank Richard
                                                                                Hank Richard  2 months back

                                                                                5:14 when I saw the red I thought is would say WASTED

                                                                                • lance lin
                                                                                  lance lin  2 months back

                                                                                  why is his hair blending in with the camera????? 3:11

                                                                                  • Grickery
                                                                                    Grickery  2 months back

                                                                                    I've done this by blinking very quickly, while looking at a ceiling fan.

                                                                                    • Xppp1
                                                                                      Xppp1  2 months back

                                                                                      I cant believe CD is fucking DEAD

                                                                                      • B n
                                                                                        B n  2 months back

                                                                                        Hi Captain D how can i send you a video to demistify

                                                                                        • Timur Timak
                                                                                          Timur Timak  2 months back

                                                                                          That moment of a ceiling fan falling onto a human head was very dissonating.