Ultra High Speed Cameras – How do you film a tank shell in flight or a Nuclear bomb test?
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Ultra High Speed Cameras – How do you film a tank shell in flight or a Nuclear bomb test?

August 15, 2019


In my last video I looked railguns, now
whilst I was reviewing the footage I started wondering how they filmed the
projectiles in flight. These are not the typical sort of high-speed camera shots
where you see a bullet hitting a target for example, these are tracking the
projectile from the barrel down the firing range. From the footage it looks
like the camera is panning around and following the projectile but that would
be impossible, the tank round is traveling at over 1,500 meters per
second and would normally look like this. For all of you out there who said it’s
done with mirrors then you are absolutely correct.
It works by having a computer-controlled high-speed rotating mirror in line of
sight of a high-speed camera. The speed of the rotation of a mirror matches that
of the object being followed so the faster the object is traveling like a
railgun projectile the faster the mirror would turn to keep up with it. Using this
method the object can be kept in the field of view for a hundred meters or so
or about ninety degrees of the mirrors movement. In this example the tracker 2
from specialized imaging you can see the mirror and to its left where the camera
is. Because the mirror is computer-controlled it can be programmed
to follow objects that accelerate even linearly or non linearly. Now rotating
mirrors aren’t new in fact they were some of the first high-speed cameras and
are still some of the fastest in the world capable of up to 25 million frames
per second and were used to record atom bomb blasts. During the Manhattan Project to develop the first atomic bomb they required cameras that could record the
first few microseconds of explosion. In order to create a nuclear chain reaction
and achieve critical mass a baseball-sized piece of plutonium had to
be compressed to about half its size. This was achieved by using an array of
focused high explosive lenses surrounding the plutonium core. In order
to make it work effectively the explosives 32 of them in all had to be
triggered within one microsecond, if any were delayed then the compression
of the core would be unequal and the reaction would even be much less or may
not even happen at all. Using a super high-speed camera it will
be possible to see how effective the explosive lenses had been just a few
microseconds after detonation. At the time the fastest cameras were Fastax
cine cameras and could achieve around 10,000 frames per second or one frame
per hundred microseconds, this still wasn’t fast enough though. The first
high-speed rotating mirror camera was the Marley, invented by of a British
physicist William Gregory Marley, the Marley camera used a rotating mirror an
array of lenses inside a curved housing each focused onto a single piece of film
around the edge of the case. This could record a sequence of up to 50 images
onto 35 millimeter film at a 100,000 frames per second. But by the
time of a Trinity test it was outdated and too slow to record the ultra quick
reaction in the plutonium core. Head of the photography unit Julian Mack said that
the fixed short focus and low quality of the lenses would probably have made the
Marley camera pictures useless. He helped develop the Mack Streak camera
which had a 10 million frames per second limit, thats one frame every hundred
nanoseconds. By the 1950s Harold Edgerton had developed the Rapatronic camera
the name coming from Rapid Action Electronic this used a magneto-optic
shutter which allowed it to have an exposure time as short as 10 nanoseconds
thats ten billionths of a second. This was first used with a hydrogen bomb test of
Eniwetok Atoll in 1952. However they only took one image so to
see the first few microseconds of a nuclear detonation up to 10 were used
in sequence with an average exposure time of three microseconds. The images
were then played back and blended together to give the impression of a
film. For the British nuclear tests the Atomic Weapons Research
Establishment created for C4, a huge rotating mirror camera weighing in at
around 2,000 kilograms and was the fastest in
the world at the time. This could record up to 7 million frames per second who
have a mirror rotating up to 300,000 revolutions per minute and recorded the
first British atom bomb test on the 3rd of October 1952. The rotating mirror
cameras are still in use today but now they use highly sensitive CCDs
to replace the filmstrip. The Brandaris 128 and Cordin model 510 have 128 CCD’s and a gas driven turbine mirror driven by helium to achieve up to 25
million frames per second at a resolution of 500 x 292 pixels for the
brand iris and 616 x 920 pixels of recording. At 25 million
frames per second the mirror itself is running at 1.2 million
revolutions per minute that’s 20,000 revolutions per second so fast of the
atmosphere inside the camera is 98% helium to reduce for friction and the
pressure waves that would occur in normal air. And so onto something I think
you may find rather interesting. It’s not the fastest camera in the world but this
one is or it was at the time in 2013 the fastest real-time tracker of a moving
object and was developed by the Ishikawa Oku Lab at the University of Tokyo. Here
it is tracking a ping pong ball and keeping it in the center of a frame all
times both during a game and when it is being spun around on a piece of string.
It does this by moving two mirrors in front of the camera one for the X
movement and Yvon for the Y movement it then uses software similar to face
tracking software to provide feedback to control the mirrors with a response time
of just one millisecond. It can also be used to control a projector and in this
scene it’s projecting an image onto the ping-pong ball whilst it’s been bounced
on the bat, you can see the little face change on the ball at the top of its
travel. So anyways I hope you enjoyed this look at some of the equipment behind some of the most amazing footage recorded to date
these aren’t the fastest cameras in the world now but it’s still amazing to
think what can be achieved by mechanical means. So as always thanks for watching
and don’t forget we also have the curious droid Facebook page and I would
also like to thank all of our patrons for their ongoing support and if you
would like to support us then you can find out more on the link now showing so
thanks again for watching and please subscribe, rate and share.

100 Comments

  • Reply Olaf Red May 20, 2019 at 6:52 am

    Yes, all the mechanical technology is pretty cool, but we still need an explanation of the physics.
    To produce an image, the detector must capture "X" number of photons. Given that the frame rate is "Y" million frames per second, how do they capture sufficient photons to produce an image?

  • Reply Saiful Rimkeit May 20, 2019 at 9:16 am

    I'd like to use this system to film politicians. Watch how their lies form in their mouths and finally hit the microphone before the words are broadcasted through the speakers.

  • Reply george otieno May 20, 2019 at 6:11 pm

    Trying to understand, getting Jack shit

  • Reply Андрей Шумахер May 20, 2019 at 6:27 pm

    Круто! Спасибо!

  • Reply Rudy Straight May 20, 2019 at 10:45 pm

    no fuse on it?

  • Reply chlipoukhan May 21, 2019 at 12:04 am

    Can you speak about the price of an aircraft carrier in your next video ?

  • Reply Old school beats May 21, 2019 at 6:17 am

    Wasnt this bloke on game of thrones

  • Reply The Thinker May 21, 2019 at 7:35 am

    One of the most usefull videos on YouTube until today. Thanks.

  • Reply BitHead1000 May 21, 2019 at 12:07 pm

    Can we get the helium camera up to 1.2 million rpm and toss that shirt into it?

  • Reply Mauricio HuacoZuniga May 21, 2019 at 12:41 pm

    It seems there is no excuse now to get detailed images from fast-moving unknown objects in our skies, Adding a night-vision system would be perfect!

  • Reply Mean Green May 21, 2019 at 3:03 pm

    Ultra fascinating.

  • Reply micsu1982 May 21, 2019 at 8:40 pm

    ok varys 😀

  • Reply Jason S May 22, 2019 at 11:15 am

    You got the Sabot round diagram ALL WRONG! The round doesn’t take the paper mâché casing with it down range. I know because I used to shoot them at people/enemy

  • Reply Jeff Smith May 22, 2019 at 4:28 pm

    How do you fake film space shit

  • Reply cleverusernames May 22, 2019 at 11:07 pm

    Lord Varys dies in the show, now starts talking about a bombs. Coincidence?!

  • Reply rbelatamas May 22, 2019 at 11:14 pm

    Great video

  • Reply Robert Sorenson May 23, 2019 at 3:42 am

    0:22 Who fires 155mm artillery rounds with the lifting plug still in the nose?

  • Reply Dolly Bot May 23, 2019 at 9:15 am

    what is this lousy shirt ?

  • Reply cell pat May 23, 2019 at 1:56 pm

    I want to see more projectile footage. The explanation is not needed.

  • Reply B Mattingly May 23, 2019 at 9:30 pm

    Huh? 🤣😂

  • Reply Off Limits Creative Visuals & Images May 24, 2019 at 12:35 am

    This is one of the coolest and most incredible video I’ve seen in a looooong time here on YT! Really impressive I’m into video and crazy images and never heard any of this, thanks for the awesome information and footage!

  • Reply Lunktar Bashnish May 24, 2019 at 1:01 am

    In my village we have no camera elder use stick to ground then hit tooth to piece awake tomorrow blood in eye neck

  • Reply mark nbris May 24, 2019 at 8:48 am

    cool. 😊

  • Reply Hallugenetic May 24, 2019 at 10:14 am

    4:26 old school slomo guys

  • Reply Simon Nowicki May 25, 2019 at 11:07 am

    1952 British test of atomic bomb..??
    So what is wrong with Nort Korea.. Iran .. Iraq..????

  • Reply Craig VanMeter May 25, 2019 at 2:39 pm

    I remember when that rail gun video first came out on YT and all the comments and speculation as to how it could have been filmed. Thank you for solving that little mystery.

  • Reply Yonis Harrier May 25, 2019 at 9:05 pm

    Filming the atomic bomb is so fake.

  • Reply Forever Raining May 26, 2019 at 2:14 am

    So what's the reason why we can't shoot a missile out of the sky with 100% accuracy???

  • Reply Pirata Caribeño May 26, 2019 at 5:42 am

    Great video

  • Reply James Robert May 27, 2019 at 2:02 am

    The "Dislikes" truly confuse me! The entire vid is based on science facts. Why would someone dislike such facts?

  • Reply tiortedrootsky May 27, 2019 at 10:55 pm

    0:39 What kind of a projectile is that?)

  • Reply Chrris Smith May 31, 2019 at 11:53 pm

    Ok, now we have to watch two ads before the video. Why don't you just show a infomercial with Ron Popiel or something. I lost my dehydrator and Turkey jerky sounds nice.

  • Reply ford nut June 1, 2019 at 3:36 am

    Hulk would catch this and throw it back at you like a boss.🧟‍♂️

  • Reply Blake Loring June 7, 2019 at 5:05 pm

    You never fail to present something both new and awesome 😀

  • Reply sliehgtofhand June 10, 2019 at 4:22 pm

    Either hold your hands apart or put them together, make up your damn mind.

  • Reply Tommy Pickren June 13, 2019 at 1:39 am

    How to film a nuclear detonation???? Hint;;;; from very far away………….

  • Reply Charles McMillion June 13, 2019 at 3:46 am

    MIT Labs built a camera that does 1 trillion FPS.

  • Reply andgate2000 June 13, 2019 at 8:09 am

    It’s not the frame rate…..it’s how the hell do you follow it in flight.

  • Reply Indo Crop Circles June 14, 2019 at 4:18 am

    Hi speed tank shell against concrete 0:10 , tank shell destroyed.
    Aluminum against concrete and steel on 9/11, concrete and steel destroyed, GREAT!

  • Reply Gareth Johnstone June 14, 2019 at 11:12 pm

    You guys amaze me. I have the IQ of a talking toaster.

  • Reply leegenix June 15, 2019 at 7:14 am

    Incredible story. I just bought my first Action Camera with 240 FPS and I am seeing with my own eyes, an entirely different world.

  • Reply Geoffrey Lee June 15, 2019 at 6:02 pm

    There was a piece of film in the late 1960s early 1970s called the world’s fastest pan. High speed cameras had rotating prisms in the 1950s. Great stuff.

  • Reply Gato June 15, 2019 at 6:49 pm

    How much for an aircraft carrier Mister Asselineau ?

  • Reply Lou Lou June 16, 2019 at 11:07 am

    are you françois asselineau ?

  • Reply Prépuce cosmique June 16, 2019 at 11:08 am

    Ensemble pour le Frexit

  • Reply Silently Sceptical June 18, 2019 at 3:25 am

    Too video, thanks.

  • Reply Arsenio Correia June 20, 2019 at 6:52 am

    I want this shirts.

  • Reply david johanson June 30, 2019 at 1:49 am

    blows my mind, 25 million frames a second……..and to follow a tank shell like that.

  • Reply N N July 1, 2019 at 9:51 pm

    Meters per/sec. come on bro. You know the majority of your audience is American so keep it American or don’t talk about it at all. All Americans have internet, don’t know about mid-evil Europe?!

  • Reply J.K Gaming July 2, 2019 at 10:15 am

    Asselineau sur YouTube

  • Reply Alban Adam July 2, 2019 at 10:24 am

    Bonjour monsieur Asselineau, bonne continuation pour votre nouvelle vie

  • Reply Thomas Casavana July 3, 2019 at 2:03 am

    This guy is a complete incel

  • Reply kumala sempati July 3, 2019 at 9:35 am

    TOP @t

  • Reply ViCk GaMer July 3, 2019 at 5:29 pm

    Stfu and show the fking footage

  • Reply Arc July 4, 2019 at 1:17 am

    well done

  • Reply 自由自由 July 4, 2019 at 11:49 am

    别的视频没中文 就不订阅了

  • Reply e-clecticism July 4, 2019 at 10:34 pm

    Who the heck down votes a video of this quality.

  • Reply Tony Richards July 5, 2019 at 5:08 am

    Notice how brits are first to invent a lot of things

  • Reply ranjeet singh July 5, 2019 at 6:37 am

    Shirts always rocking

  • Reply David Moreno Belmonte July 5, 2019 at 9:11 am

    wow….

  • Reply Simon Nowicki July 5, 2019 at 11:04 am

    What about Iran.. USA.. should to thinking twice..:)

  • Reply prasanta talukdar July 5, 2019 at 4:36 pm

    👌👌👌👍👍👍

  • Reply Nektu July 6, 2019 at 12:06 am

    I am not trying to be rude or inappropriate but what is going on with the narrator's neck? It's distracting me so much I can't follow what he's saying…

  • Reply gary willis July 6, 2019 at 7:29 pm

    He did a better job than PBS when I first saw documentaries on high speed cameras back in the early eighties.

  • Reply Jüri T July 6, 2019 at 9:28 pm

    FUCKyOU lier
    FUCKyOU

  • Reply Joaquin Linares July 7, 2019 at 3:53 am

    so they can record ufos in flight???

  • Reply walt7500 July 7, 2019 at 12:15 pm

    Excellent presentation.

  • Reply SMaze17 July 7, 2019 at 2:47 pm

    Your videos are amazing CD. Keep 'em coming please!

  • Reply WSQuest July 7, 2019 at 4:36 pm

    Excellent Video. Thank you for all the good information.

  • Reply craig swift July 7, 2019 at 8:57 pm

    Love this man. Who is he?

  • Reply bigpapadrew July 7, 2019 at 9:17 pm

    it's a fucking miracle that we have created a camera that can still film without breaking as you wear these absolutely vomit-inducing shirts, that's for sure

  • Reply Anonymous sp389bw July 7, 2019 at 11:15 pm

    How to see a person saying 'cheese' just before taking a picture at 25 million frames per second. That would be interesting.

  • Reply SuperVt100 July 8, 2019 at 2:11 am

    How much memory does it take to record one second of film?

  • Reply Frank Zayas July 8, 2019 at 2:17 am

    That just made my brain hurt.

  • Reply bobo jojo July 8, 2019 at 4:17 am

    Well that was freakin awsome

  • Reply unwarr1 unwarr1 July 8, 2019 at 5:50 pm

    not bad. you're making progres, Varys

  • Reply Dmm Dmm543 July 9, 2019 at 3:01 am

    Cousin fester.

  • Reply khaled abou ziad July 9, 2019 at 7:44 am

    How can the camera pursuit the projectile??

  • Reply MARK MALASICS July 10, 2019 at 5:26 am

    I really wanted to watch the content of this video as described in the title. But why do you have to put your face and your "talking with your hands" nonsense on the screen as well. Please, give us real content, not the obviously egocentric and narcissistic person who posted it. Is this REALLY too much to ask?

  • Reply Crypto Colax July 10, 2019 at 1:34 pm

    If you had to look at all 25 million frames that high speed camera takes in one second and you looked at every frame for just one second it would take you 289 days to complete that task.

  • Reply Alex Dark July 10, 2019 at 9:05 pm

    why not 25 million fps on pc gaming???

  • Reply BGR BGR July 11, 2019 at 6:47 am

    Blablabla

  • Reply Ded Marazm July 11, 2019 at 8:47 am

    Ну почему не на русском языке,что интересное происходит

  • Reply Sandy Sutherland July 12, 2019 at 4:48 am

    It's not a shell you nong, i's a projectile. The shell remains the breach and the projectile travels up the barrel!

  • Reply Gixer750pilot July 12, 2019 at 7:37 pm

    I wonder about the mentality of the people who gave this video a thumbs down

  • Reply dborg July 14, 2019 at 1:37 pm

    But the question still is … Can it run crysis

  • Reply AriVovp July 18, 2019 at 5:33 pm

    Thank you for sharing

  • Reply 古元坎 July 20, 2019 at 7:10 am

    it's hard to image how the camera reach the velocity,25million fps per second

  • Reply Maison Kuduk July 20, 2019 at 9:21 pm

    UPR 2022

  • Reply Frank Bullitt July 21, 2019 at 2:45 am

    awesome film of tank round in flight.

  • Reply 浩哥真无敌 July 23, 2019 at 7:53 am

    太牛逼了

  • Reply Adam Yosef July 23, 2019 at 11:51 am

    This man is amazing. Try to understand between the lines.😁

  • Reply Adam Yosef July 23, 2019 at 11:54 am

    Back in time . Curve space maybe or only consecnes

  • Reply Secretreader July 25, 2019 at 12:33 am

    Love this channel. Some deep analysis

  • Reply Don Abel July 28, 2019 at 12:18 am

    Very very interesting 🤔 😊👍👍👍

  • Reply Alexis Papageorgiou August 3, 2019 at 10:25 am

    You're good bro, but I'm with Tyrion

  • Reply J Shepard August 8, 2019 at 5:07 am

    Excellent video.

  • Reply Rice Burnerbiker August 9, 2019 at 1:37 am

    Trump supporters want these when they go to large gatherings.
    Don’t infringe on there madness folks.

  • Reply Robert Kline August 14, 2019 at 11:17 pm

    Super cool, so grateful I stumbled onto your videos!

  • Reply Pereira Kelvin August 15, 2019 at 8:05 am

    Wow never knew mirrorless camera used during the 50s so it not new in today mirrorless camera. Thanks for sharing this information bro it's a eye opening.

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