Whoever suggested color filter - kudos to you!

Sorry for being away for such a long time!! I've been shooting a documentary and that's involved a lot of travel - to Boston, Paris, Glasgow, Baltimore, DC, Houston, and now I'm home for a few days before heading off to Australia. I really appreciate your patience and support.

Hi Derek. This might get lost in a sea of youtube comments, but nevertheless I have a suggestion for a sound-based Schlieren imaging experiment. I was wondering if it is possible to observe a 3D standing waves in air (or some other transparent medium). Standing wave will create a pressure differences, so theoretically we should be able to see with this technique the pressure gradients between nodes and antinodes. With proper set up we might see similar patterns as Chaldni patterns produced on a 2D plane. The technical realization will probably be a bit more difficult, but this was just a quick idea that crossed my mind.

watching a video about Schlieren in Schlieren, Switzerland.

Make a collab with the Slow mo Guys. this would be cool :D

The amount of hardwork you put in for creating is really inspiring.

Hey!! If you placed an ice cube next to a candle could we be able to see the heat transfer between the candle and the ice cube? I'd like to see it if possible thank you ^^!

Today on How It's Made: Schlierens! First, you take a plumbus..

Shhhhhhhhhhlieren. That's a tough one. Getting hypno vids at 5:20 o.o

That is some sick vaporwave art with those filters!

"Using this razor blade to cut the light" Why does that sound so dam cool to me 😂

This was really cool, wow, the images are stunning! I loved the colored ones, so pretty

"I may need to call in some support..." This sounds like a job for @theslowmoguys !!!

When you blew up that bubble SO close to the mirror my heart jumped because i remmemberd how mauch work it takes to clean my telescope 😭😭😭

At Roche Medical electronics we had a Schlieren through an Aquarium tank ( round pinhole light with round black dot obturator) to a video camera: we could image the ultrasonic beam patterns emanating from (3-Lens) Cloverleaf fetal monitor transducers. The cast epoxy lenses sometimes were improperly bonded to the flat PZT crystals, and the Schlieren clearly showed black streaks in the conical “flashlight beam” pattern emitted from the ultrasonic lenses. We also had a sound pressure force balance that had 90 degree corner (point-up) covered in ultrasound-absorbing rubber suspended in another tank from a microbalance. When the Ultrasonic transducer was aimed at the rubber corner, the milligram “force” created by the ultrasonic sound pressure (deflected at 45 degrees) was proportional to the milliwatts of ultrasonic energy emitted through the water. Bureau of Standards method based on the paper by my Manager (pronounced “Ya-niss”) Janis Ziedonis. In the early 1970s. Peter Bourdelle

The two-colored piece is awesome, the color contrast helps to see the flow movement much better.

Please just upload 30m of uninterrupted colored Schlieren Footage. This looks mesmerizing.

Razorblade on a stick: Great science tool in the right hands, evil weapon in the wrong ones.

This is by far the most clear and concise demonstration I've seen of Schlieren photography. It would be great to see the currents of an ionocraft!

You have manage to explain "concave lens" light behavior in the most compelling way I have seeing in the all my Collage student years hahaha.

I could watch these experiments all day. Epic

For the sound thing, maybe try a speaker with a sound frequency close to a multiple of your camera framerate.

I love literally everything you do.

This video is satisfying to an infinite level !! It is nuts. So beautiful to watch

Also, enjoy your trip, Derek.

It would be cool if you used a continuous spectrum filter. The only way I can think of to make it is by printing it off on a transparency sheet. Might give cooler images.

Usually I hate added sound effects that are obviously fake, but in this case it works really well to add to the effect. Well done.

I only looked at the thumbnail and in already crying from its beauty and I have never liked a video so fast!!!

I love this channel, Always so exciting when I see it on my feed

I would like to see some schlieren footage of the GTAW process of welding. The shielding gas used (argon) emerges fairly cold compared to the electrical arc that does the welding, and might make for some very strange patterns. Given the sheer amount of light emitted, along with huge UV radiation, I'm not sure how well it would be photographed or video taped.

This... looks so cool. Getting so many vaporwave vibes. There's some serious visual art potential with this, hot dayum

Absolutely amazing and interesting stuff. I love your channel, your message, and all you do to further expose people to science and educate the public!!!

You should use a wave form generator to Make low frequency sounds and record the pressure waves in smoke in front of the camera.

WHAT ABOUT MORE COLORS? (4 pieces of celophane, splitting the focal point into quarters; 8 splitting the point into eighths; 16 into sixteenths.... etc.)

Internet + Veritasium = mind blown. Well done.

Really cool to see you try the color filters idea... worked out great!

Do an electric arc

Great video enjoyed both of the videos on this

That was absolutely amazing!! So inspiring!

Those were some awesomazing ultra plus images!

You should do a video with the super slomo guys. Try to see if you could see the sound waves with their equipment.

You could also use two light polarizers.

Love that turbulent flow!

I was able to find an old Olympus iSpeed 3 high speed camera and a 12in parabolic mirror for a really good price on eBay this year. I've been having such a good time to say the least. BB's, the tip of a whip cracking, supersonic flow from an air compressor, etc. I feel like a kid in a candy shop now, and the candy shop is in my basement! 😁 Your videos were very helpful to me during the process of setting up my schlieren system. Thanks man!!

Clearly his sphere analogy is bunk, a cow approximates a donut, not a sphere.

It is debatable to what degree a shockwave can be called sound. Many definitions of sound do not include shockwaves. I think it would also be more interesting to try and see a standing wave. If you tried a clear Rubens' tube, you could possibly directly see the relationship between the standing wave in the tube, and the flames up above. If you are able to see standing waves, it would also be cool to see the difference between cylindrical and conical bore wind instruments.

This is very true, I got audible and although i already like long car rides and flying, it made them even better.

Ohhhhhhh that balloon popping through the two-color filter, instant thumbs-up!

I am currently making a schlieren image of a cavitation bubble for a major school project because of your previous video

you saying "rainbow schlieren" made me wonder how it would look to use 6 colors of triangle (sorry indigo) converging on the focal point instead of cyan and magenta. I only go with 6 because it would keep a horizontal separation between ROY and GBV, commonly considered the warm and cool colors respectively

i love his videos and how he explains it in depth

Awesome video! I love your choice of colors.

For apples next iOS update they should use this as their backgrounds

Is it possible to use not two colored halves but four different colors in quadrants to see not only light deflected vertically but also horizontally?

It looks like it's underwater. Seriously amazing.

Why has it taken me 3 years to mind this!!! Amazing videos thanks

Love to see this revisited

I was waiting for a new Schleiren video for so long! Thanks Derek!

The smooth flow from a fan. The flow out of a whistle. The flow out of a flute. The wing beat of a hummingbird. The waves of a housefly. The flow across a paper airplane. The whistle that comes out when you blow into a bottle in a specific way. The stationary wave produced by a tuning fork in a long cylinder. And for sound, it doesn't have to be a shock-wave. Try producing a continuous sound that would give continual waves, like that from a tuning fork.

This is wonderful, useful and beautiful.

The Shlieren affect sounds like what i get after 4 beers. I start shlieren my words.

Who you gonna call? Slow Mo-guys!

Great Video. At about 5:50, when you make fire reaction travel up the gas (loved the chain reaction visualization), I guess it would show best the dynamics with the use of a IR camera. As we can see thanks to this arrangement, the fire starts and propagates without emitting "flames" (in the visual spectrum). You and people like you make KZfaq worth using and a better place, thanks.

5:00 beautiful!! awesome work

These videos are educational art. keep up the good work ❤️

To all the people complaining about the quality, I watched part of this video on desktop and part on my phone and on my phone, there were higher quality options. I thought schlieren imaging of the bubble and lit ping pong ball looked a bit like someone had taken a pop art, or psychedelic type, painting and animated it. I may be the only person who sees that, but that's what it looked like to me. It was very cool anyway.

I love the color images!

is it just me or the sequel to this video is the perfect opportunity for the Slo Mo guys and him to collaborate.

Make it loud. Use two wooden plates and slap it together - much louder than hands. Use ear protective gear.

Do opening a cold can

One word---amazing!

Brilliant! I love your easy informality.

SlowMo Guys + Veritasium = seeing sound?

Really nice vid! Could you try something more powerful, like maybe a thermite reaction?

I'd love to see the airflow/pressure waves from musical instruments through this,

To see sound you have to strobe the led at a frequency very close to that of the sound. This will “freeze” the compressed and rarified sections of air long enough to see them. You’ll only be able to get one frequency at a time.

"anurag namdeo" mentioned using more than 2 color filters, and i must say that sounds pretty cool. Can you use other types of filters, like Polarized filters; UV Filters and Infrared filters? With the Infrared filters i think you might need something like an old DSLR camera with its infrared filter removed?

Surely inhaling that in [5:50] can't be good for you ;p Amazing as always

This is just amazing. Thank you for shearing it with us. I would suggest, not sure if it work- try to image of a microwave magnetron, or/and a Tesla coil discharge.

Awesome imaging!

I've head that Destin has a 111,000 fps camera!

fun fact, you can also read actual books while in a plane.

This just blew my mind!

this is incredible!

"Slow Mo guys"?!?!!?!!?!!?

*could you do this with more than 2 color filters?*

You’re an amazing human being my friend

Always precise! You have to power to show complex phenomenas as easy thinghs

Maybe imaging the effect from audio would be possible if you made some kind of standing-wave setup in front of the mirror.

What about a shape change? One without the cone, just HE. They have the same effect.

This is really awesome to learn about, thanks! I watched the first video and this one, and it greatly helped my understanding of how NASA made the first "Air-to-Air Images of Supersonic Shockwave Interaction in Flight" shared this week.

Awesome. Here is something you can try to show how heat can expand the surface of the mirror. I am currently making a parabolic mirror for my DIY telescope. I am using a similar setup to test the surface texture and profile of my mirror. The instrument I am using is a knife edge tester, where the knife cuts the light source in half, and the returning light from the mirror is also cut in half with the same knife, precisely at its focal point. Then you can see the profile and surface of the mirror. place your finger on the mirror surface for a couple of seconds and the area will expand on a nano scale, but in the camera you will see a hill forming on the surface of the mirror due to the heat expansion of the glass.

Both art and science.

Call in backup.. For slow motion.. Veritasium + SlowMoGuys video confirmed?

Woah, that filtered version would be a perfect live background.

The crack of a whip, when the loop of the the whip causes a sonic boom. Observed under Schlieren imaging

YOU HAVE TO DO THIS , Please find a Radiometer and let's see how the air is moving inside !!!!

6:40 Couldn't you make a repetitive clap (with a adjustable frequency) with some kind of machine which is nearly the same every time and then make the rate of clapping very slightly faster then the shutter speed of the camera? So you could achieve a "fake" higher frame rate? I hope I discribed it clearly enough 😅

This is just amazing. Thank your for this video:)

This is amazing!