How fast does glass crack? - The Slow Mo Guys
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- Опубликовано: 12 дек 2018
- Gav and Dan use some absolutely insane frame rates to learn how fast 5 millimetre tempered glass cracks. 3 pieces of glass were harmed in the making of this video.
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Filmed at 28,500, 78,000 and 481,000fps on the Phantom V2512
How fast does glass crack? - The Slow Mo Guys 
Развлечения
Hello everyone. I recommend you watch this one full screen or on a computer so you can see the cracks more clearly. They look bloody tiny on a phone screen! - Gav
You can't tell me what to do!
Don’t tell me what to do
*Hello The Slow Mo Guys✔*
oh woawie
It worked fine on my phone idkw
So if the earth was made of glass, it would take roundabout four hours till it is completely shattered into pieces.
Thank you Michael very cool👌
2.4h if you would crack it at the surface! The crack goes THROUGH the sphere, not only by the surface!
@@drBVR That would be true, if the earth wouln't be hollow like a Christmas tree ball.
@@perschistence2651 Ah.. yes.. I had to google it, but you are right.. the earth is hollow!
At least Donald thinks so, so it must be right!?
@@drBVR Exactly, you see, the internet knows everything!
I don't think shorts were the best clothing option for shattering glass at extremely close range.
It's safety glass. Very unlikely to cut anything.
@@DinnerForkTongue I can confirm that tempered "safety" glass is indeed much safer and less likely to cut, but it is still glass and can still cut if you're right next to it when it shatters. I came here to this video to see what is happening in slow-mo since two hours ago I suffered multiple lacerations from a dusty arcade cabinet glass panel that slipped through my fingers and shattered right next to my exposed, shorts-wearing legs. It was like a miniature grenade going off and blasting tiny shards of glass into me. Much smaller than the glass nuggets that made up the majority of the debris. Some of the cuts were fairly deep, as well. Not enough to need stitches, but yikes. Two of the cuts took tiny chunks out of me. Definitely would not recommend breaking any form of glass next to your bare legs.
@@jenniferlynn3579 Wtf is that XD just write a whole book
@@jenniferlynn3579 omgsh that's insane!! Are you better now? 🌻 It must have taken ages to get all the glass out (?) :0
Glass can cut though pants
2:44 that flash of light was everything
You talk like a girl
@@yKuroKenshi stfu, you legit like rainbows
@@crypticgaming3849 wtf of course I like rainbows... Wdym????
@@yKuroKenshi ruclips.net/video/HnZ4sOCU1ZY/видео.html
@@crypticgaming3849 what’s wrong with rainbows mate
Dan just accidently explained how the earth is round
Haha
? There is no factual repeatable proof of it being round, so what did he say?
antknee420 at 6:05.
make what you will of what he says. Personally, I think the earth is round but if you think the earth is flat, ok. As long as you’re not hurting anyone, do and think whatever you want.
@@antknee420 it response for just Catie finding the part, the line is like the horizon
face it
the earth is a banana
i cant be the only who didn’t notice the glass plane at the beginning of the video.
I thought it was so weird Dan had his hand out like that until he moved the glass. 🤭
I thought it was my phone that had cracked at first
It surprised me
Jose Ramirez that got me too
Nope, your not alone 😂
At 6:00 they debunked the "where's the curve" argument of flat earthers.
But Flat earthers still wont believe it. Science arguments for flat eathers is like garlic for a vampire
globe companies say the earth is round to sell more globes
science confirmed
@@onmymommyweballin9136 Ah I forgot about billion making globe industry right after NRA and oil
Fluff you one thousandth like
Wheres your evidence?
To this day it still takes me a minute to remember that Dan is holding the glass in the beginning.
And wears shorts
A road of glass would finish "cracking" from New York to London in 1 hours and 2 minutes
Did you calculated that yourself?
I figured it out and it would break from London to Los Angeles in 1.8 hours.
Wow thats mad
Dang... I could watch one act of a Gilbert & Sullivan opera in the time it takes for that road of glass to crack, lol.
I’d love to see that
The speed measured here is actually the speed of sound in glass!
Yes, and it's very sad that authors didn't mention that. In fact it's common property of solid substances
WOA
A question, should i calculate Mach with the speed of sound in the glass or the speed of sound in the air at room temperature?
@@emilio_448 You only use 'Mach' when you're talking about an object moving through a fluid, and since contrary to popular belief, glass is *NOT* a liquid, I assume you would want to calculate the speed of sound in the air. What exactly are you trying to do?
That is wrong. The speed of sound in glass is between 4000 and 5000 m/s instead of the 1458 m/s that they measured.
Glass should break at the speed of sound through glass. You can look up the speed of sound in glass and find values between 4 to 5 km/second. So why does the glass seem to break at 1/3rd that speed? Well after thinking it over I realized that just like seismic waves during an earthquake there are different types of waves traveling at different speeds!
So which sound wave are we observing?
The "P" or "primary compression wave" travels fastest at about 4-5km/s in rock like material (glass) and is what is generally used for "speed of sound" but that of course travels far faster than what we see here.
The "S" or "secondary shear wave" has a typical speed around 60% of that of P-waves in any given material. Great! but this means the "S" wave velocity is still too fast and cant be the culprit.
So that leaves the 3rd type of seismic wave: "surface" or "Rayleigh waves". Rayleigh are a lot like the "wave" produced by taking a tight string and flicking it; making the string tighter makes the wave travel faster. Unfortunately this means that "Rayleigh velocity for a sheet of tempered glass" is not something I can easially look up so I will have to approximate using the equation: v=sqrt((N/m^2)/((kg/m^3)/m)
We know that surface of tempered glass has 10,000 psi (~7000N/cm^2) of compression ( leaving the inside under tension). We also know that the density of glass is 2.5g/cm^3. Plugging this into and simplifying the equation I am left with: sqrt(7000N/.0025kg) = 1700m/s which is close to the velocity observed!
Now this makes sense since the stress that ultimately caused the glass to break was similar to "flicking" the end of a tight rope. I predict that if you hit the edge of the glass with a hammer (or maybe bullet) so that the "p" wave is causing the glass to fail we should observe a much faster (4.5Km/s) glass breaking velocity.
Wow! I think this might be the longest comment you've made in a while.
Ah. much better explained than the first comment you made.
@@khubba10 Well It is a good way to push the comment up to the top.
@@theCodyReeder true story, amazing explanation
Cody'sLab Look at mister smart guy here! :p
"what goes Mach 4.2?!"
A manhole cover.
Too bad there wasn't a fast enough camera to measure that manhole covers speed more precisely...
The way he says Mach really annoys me
Here's what I found:
A Mach number is the ratio of an object's speed in a given medium to the speed of sound in that medium.Mach 1, then, is the speed of sound, around 761 mph at sea level on a standard day. The term is also used as a metaphor for high speeds more generally.
(I thought that otherwise you won't believe me)
@@mranonymous481 Yes
Only Half as Interesting viewers will get it
0:59 when the tea and crumpets is on point
4:34 companies 0.001 seconds after pride month ends
FadeFA I was just about to comment that
It's a shame pride month exists at all.
@@montpc259 could you elaborate a bit more on that
@@necronomics1804 I think it's because companies don't really care. They just celebrate pride month to seem inclusive.
Mont PC preach brother
Love the analysis in this video. Dans description of the curvature of the fractures by considering the pane as a section of larger circle is spot on. Not only is it mathematically/physically correct they, explain it in such a way most people can understand it
Hello im responding fast!
GaeafBlaidde was a good example of us being able to immediately learn from the footage we took. Love it when that happens. - Gav
Yeah you're right. It's such a complicated process put in this less than a second video. It's just awsome!
indeed!
yeah that was really genius. They're two pretty smart blokes considering some of the ridiculous things they do on this channel
"I think it's time to get carried away." The basic principle of this channel.
How fast does glass crack?
12M people: well well then, let’s find out
Kpop Fan same person as what?
Kpop Fan ohh..cuz someone else commented so i replied but he deleted that comment soo yea
Now is 13M
why is that interesting
Yeah that's right
Dan: cracks tons of glass
Also Dan: wears shorts
But he has shoes
Milenium lets all be honest with ourselves here.... we’re all just so proud of him that it’s not crocs with socks ( yet )
Short pants.
Its called shorts
shants
Excellent analysis on the failure front.
I'd love to see you do more glass cracking, Destin! Possible collaboration with Gav & Dan? :D
Hi Destin! I was going to say, this video reminded me a lot of your Prince Rupert's drop video!
Hi Destin
We expect a video now with your detailed analysis ;)
I think you are the right person to answer this question, is the speed that they calculated the speed of acoustic waves (namely the "speed of sound") through that specific material?
Dan, "How much can you see?"
Gav, "Bloody stupid, this is."
Me, "Is that an answer? Sure."
I've always wondered how fast glass cracked. Now I know. Thank you, Slow-mo Guys.
8:08 I think it’s so cool that after all these years they are still mesmerized by what their cameras can do
Sponsorship is a helluva drug.
yup
@@timmoe3370 no
Edit: whoops I made him delete his link 😂😂
Gavin spent a good amount of money and i see why, being able to crop the image and get a better frames per second, very versatile camera.
He has done it in other videos, or with another camera.
I think it’s partly because as they have been uploading for so long so technology has advanced so the cameras are much better so even for them they keep being really impressive.
Watching this on my cracked phone
Savage
Wow, your screen refresh rate might be on mach 4.2 😂
Same 😂
Do you know how fast was that cracked?...🤔
Same
i love how this channel is just two blokes having some fun with a camera for our enjoyment lmao wholesome af keep it up boys
Gav and Dan: Have an ultra high speed camera probably capable of shooting at speeds of over 50,000 fps, amazing technology at their fingertips.
Also Gav and Dan: Glass is cool.
SCIENCE!
You should try to fire a bullet at the same time and then compare the speed of the bullet with the speed of the breaking glass ;)
Do this. Please!
It would probably be too difficult to coordinate
Glass would far outpace the bullet. Bullets don't travel at Mach 4.2
Most bullets would look slow compared to this speed
@@michaelitsyaboymb8300 Got that right!
Really cool to see phineas & ferb still doing cool stuff in the backyard after all these years.
hahaha, good one
LoL^^
I am rewatching this video after a while and still didn’t notice the glass
Same though, 10 months later. I've seen this like 20 times.
5:25 So basically a Square glass that's 1km^2 wide would take under 1 second to fully shatter. Impressive
The only RUclipsrs I can’t get mad at for taking forever to upload.
They're uploading in slow motion.
Because it’s quality
Domics?
What about vsauce
Just like to point out he’s breaking big pieces of glass in shorts
Tough guy... I bet he is also frying his bacon bare-breasted.
It's safety glass. You can tell by the way it breaks--no sharp shards of glass or needles; just small, more or less uniform sized pieces. Not likely to cut when it breaks.
@@kenhaley4 cool, still wouldn't gonna risk it
Connor, the android sent by CyberLife yeah, you’re right. Even though safety glasses lessen the danger of you getting hurt by glass shards, it doesn’t completely eliminate the danger. One example is car windows. Most cars have these safety glasses. But people still suffer injuries from shards falling on their body parts.
The guys break glasses out loud.
Neighbours: Omg, that family must be having a messy divorce
I love how he isn’t scared of breaking the glass while wearing shorts
2:10 The ice after Scrat places his acorn in the Ice Age movies
Lol
My confidence after seeing my grades...
@@rainbowangel5264 I felt this
7:26
I just wanted a little nostalgia. I wanted none, *zero* reminders of the present day. But to be honest, I probably wouldn’t have minded one much. But this *specific* reminder, these specific colours, will be the death of me.
Loved this one guys, new to your channel and really have enjoyed all I have seen.
Not as fast as RUclips rewind dislike rate
BOOM! Got em...
Erick Lorenzo lol
We don't have the tech to see something that fast yet
Lets go lol
400th like
That intro was beautiful. I noticed Dan holding it but didn’t realize it was glass!
I thought my phone screen was cracked because I dropped it like 15 minutes ago. It actually scared me for 5 second
the intro is beautiful but so are my two girlfriends
I didn't notice at all! Tricky 😆
When I watched it, I never saw the glass at the beginning, but after its revealed, I can't stop noticing it.
1:54 that sound though...
0:20 I didn't realize anything was there till they pointed it out. That's one clear piece of glass
Polish Filipino can you watch my new vlog and tell me if it’s good or
not
@Shambles1980TRealOne We didn't watch vlogs in 2001
Please don't advertise here
"I'm gonna bung in a ton of shutter here. 45 degrees?"
- "Ooh, that's naughty! You never do that"
"Bloody naughty innit."
Love these guys.
I didn't/don't know what any of that means, but "bung" makes me chuckle a little.
The famous wasp-filled ceiling fan! I love going back to the older videos and seeing stuff that Gav has mentioned on F**kface!
Fresh comment for an old post.You guys are doin great things,SCIENCE and stuff MANG!
Who else didn’t notice the glass pane Dan was holding until they mentioned it at 0:24?
I didn’t notice it but I did notice a whale noise at 3:00
Yep
I didnt even know it was there until I saw this comment
... that’s the joke
Me
Not gonna lie, I didn’t even see the glass until they pointed it out
Same
fresheroaks same
Abelfatbutt same
Same
I went to the comments to check If I wasn't the only one
"45°"
"Ohh that's naughty u never do that!"
"Bloody naughty innit"
Best lines
The slow mo guys: what goe’s faster than mach4.2
Me:light
They said physical things
@@luvie802 light is physical
@@squidwardo7074No, light isn’t physical matter. It’s a form of energy; it’s radiation.
@@SylveonMujigae never said anything about matter
I didnt notice the glass in the beginning lmao
Me neither 😂😀😝😛😜
Scrolled through the comments just to make sure I wasn’t the only one 😭
i did
ya i didnt see it at first.
i wish they would have used the glass that dosent crack like this
@@dogfart1237 r/iamverybadass
it's a circle because it's literally just a "sound" wave moving through the glass. the speed at which it breaks is the speed of sound through that material. typically at ~345m/s through air at sea level, the speed of sound is magnitudes faster through solid objects. (audio engineering is a hobby of mine - i obsess over this stuff)
amazing video. i loved every second.
This was the comment I was looking for. I was hoping they would talk about this during the video
I know that you commented this two months ago but I'm super curious about it and I'm having a hard time finding answers via google that I'm able to understand as they're all very jargon heavy and I'm not really educated about this at all. What takes the physical force exuded by the pliers and transforms it into a "sound" wave? Is this the only way force is transferred through things? Does the speed of the force applied affect the rate at which the break forms despite the speed of sound being a constant? (For instance if Dan would have used a hammer and bashed the edge of it instead of crunching into it with the pliers) If you don't have time to answer would you perhaps have a link to something I could use to learn about it myself? Very much appreciated either way.
@@zevolaful the reason it travels at the speed of sound is because that's how long it takes one molecule to bump into another molecule. Each molecule can only "inform" the one next to it that it's "time to move" after it bumps into that molecule.
Think of it like a line of dominos, that last Domino will feel the push but only after the *wave* makes it way through all the other dominos first. That "wave" of energy propagates at the speed of sound because that how fast vibrations can travel through that particular object
@@bboyfan22 you said it better than i could have.
@@bboyfan22 OH! Thank you, that makes so much sense! Since sound is just a vibration of air particles it's essentially all the speed of 'vibration' but "speed of sound" is more understandable and useful. I really appreciate you taking time to explain that to me, thank you very much. I hope you and yours are safe and healthy.
14.1 million subscribers, 14.1 million views.
The ultimate in efficiency
You're getting a thumbs up from me for catering for your international audience
0:33 I legit didn’t even know he was holding glass
same, i didnt even realise until they pointed it out
Same lol
I was on my phone so I didn't realized...
Same
Mobie Gaming I knew they were holding the glass.
Might be one of the nicest videos, visually, ever made on RUclips. The edits, cuts, little moments... Brilliant video.
Hahaha I like how you are talking about this video as if it's anything more than just a couple of chaps breaking glass to see what it looks like in slow motion and lazily trying to explain the science behind it all
And not even 10 minutes.
Thank you John, very cool!
Lol welcome to the SloMo Guys...
@@scatered1 Yet they still did an excellent job, and it got over four million, very well deserved, views. That is their magic, my friend.
I literally didn't even see the glass in the intro until Dan grabbed it.
Objects tearing apart (glass breaking, balloon popping etc.) are some of the most interesting stuff to slow down, since somehow they go so incredibly fast.
me: "Should i google what that number is in meters?... nah.."
Gav: "And for the International audience"
me again: "nice."
General rule: 1 meter = 3.3 feet (so I just multiply by 3 in my head, and then add a bit for the remainder if I don't need exact figures)
Marking it in feet like a proper American. Gav is fully indoctrinated now.
pocketlint82 marking in feet like a proper inferior system user
@@pocketlint82 lol we use feet for a lot of things in the UK too measuring the height of a person for example
@@zombievac Why not multiply by 10 then divide by three? No guesswork then!
I love that this channel made me actually enjoy learning and it’s just 2 dudes painting rainbows on things and breaking them (for science)
The different between science and messing around is writing (or recording) it down xD
I love that quote.
The circle theory makes so much sense therefore showing how genius u guys r
Did anyone else not even notice the glass in Dan's hand at the beginning until he said "oh here's one!"
So we can all agree you guys now have to make a giant round glass video.
i'd be down to see that
Yess!
Yes.
They better.
Yes they should
I didn’t realize he was holding glass in the intro...
Anton H me to
Neither did I
Me to
Same lol
Same... I feel stupid...
I’d love to see you guys revisit this with the faster phantoms that are now available.
When you two put a video on you tube there is no point in there being a thumbs down button because all of your videos are great!
6:04 I think that was the smartest thing I've ever heard Dan say in a video
These never cease to amaze me!
Jesus Christ youre like the new justin y
captions at the start of the video and youll change your mind about sending them to heaven (im joking)
*_Dad?_*
*verified*
Jesus Christ thank you Jesus Christ! Very cool.
"Glass is glass and glass breaks"
-Jerryrigeverything
Excellent video. Excellent maths. Phenomenal speed. Well done, thanks 👍👍
You guys should film macro shots of insects walking and there joints moving, like a ant or a centipede. I think that would look cool.
I love this idea.
Me too!
Bump
Would be awesome, unfortunately macro + high speed require stupid amounts of light. I'm talking tens if not hundreds more light than the brightest noon sunlight. Would probably heat up any insect to the point of killing it in seconds. Check out Tesla500, he did a high speed macro shot of a phonograph needle, took him some serious light sources and melted some plastic. Cheers
I did a slo motion of a snapping turtle bite
"Got a church window?" is one of my favorite lines ever on this channel
Jason Woodring am I the only one who's ever wanted to remove church windows and replace them with lgbt pride mosaics
@@luxdeitine4882 I really hope you are
@@Pao234_ fair enough
@@luxdeitine4882 bro you poor thing. #didn'tdeservethemean
Awesome. It's amazing how fast it goes
That was soooooo satisfying to watch the paint just,well,crack I guess
Not as fast as my self esteem broke
Dont kermit suicide
Kermit sewer slide
kremit the frog ooooh edgy
Kermit skewer died.
How do you break something that was never there?
Dan, you probably should have worn some pants for that...
Sean Hearrell That’s what I was thinking.
It's safety glass, so there aren't large razor sharp edges, but yeah.
You're lucky he wore goggles and gloves tbh.
and also a respiratory system with 1500 liter oxygene tanks and 2 bomb suits?
seriously...
And here i am thinking it’s a camo joke.
"Waste of paint", they said
Yet still using a two meters long glass panel to film two feet of it
Thats the control size, to get contstant accurate readibgs.
Couple of questions:
Is that speed true for all types of glass?
Did the paint slow down the cracking in some way? Like a film that held the glass fragments together?
That speed likely wouldn't even be the same for the same types of glass.
Because of the way glass is produced the actual molecular structure of it changes wildly from peace to peace so the speed at which a pressure wave can travel through it will again wildly vary relative to most other materials where it is a very predictable speed.
You could probably find pieces of glassware the speed of that pressure wave is up to 50% faster or slower depending on many factors
I want a video showing how fast two liquid droplets will join surface tension and become one drop. You could do them two different colors.
Pretty cool idea, although my intuition wants to say that at that level of precision, colored dyes might affect the surface tension! 🤔
They did it once
If the earth really spins i want a video showing a helicoper hovering over a building in one position showing everything on the surface of the earth moving east.
@@Robert-yf1kn that's not how reality works
@@Soken50 You dont understand reality then,research why the earth does not spin.
7:57
Gav: “it just looks like a software wipe”
Dan: “it just instantly turns to like lizard skin”
Yeah, we heard them say that.
1:37 Accidentally talking into two mics at once sounds kinda funny ngl
Chill out guys. Your neighbors will think Stone Cold Steve Austin lives in your backyard
0:21 I did not notice that glass XD
RANDOMstuff animation I did not notice you watch this channel m8
Me too
Can you guys do candle wax drop on water really curious how they form in slow mo
"What goes mach 4.2 apart from space ships?"
Koro sensei who can go mach 20: Am I a joke to you?
fun fact: space ships basically go Mach infinity because Mach is defined as (speed)/(speed of sound in the medium the signal/object is traveling through) and the denominator is practically zero in space ;)
@@qayray I don't know what a joke is either
It’s crazy because I posted a comment like this scrolled down and saw this
Backyard Slo Mo guys was/is the best.
If i was your neighbor, i would build a deck so i could just watch you guys do your stuff. better than tv.
But no slow mo
@@mr.e2297 you build the deck to watch and then they invite you to see the slo mo and you slowly become the third member of the slo mo guys.
I didn’t even notice the glass Dan was holding at the start of the video.
Wow, that happens to be almost exactly the speed of sound in water!
There are several air/space craft that could outrun glass shattering. That’s so fascinating to me.
*_Not that fast compared to 2018 youtube rewind disliker growth_*
Lol good one
Accurate 2
Good one : )
"Wot goes mach 4.2?Probably a spaceship"
TL;DR: Yes, a spaceship.
The SR71 Blackbird had a recorded top speed of 3.5, however it's true top speed is still classified. In an interview with a former pilot, he recalled one of his missions over I think Germany, (probably off on that one) having a total of three missiles fired at him, and top performance was in order. Tilting the throttle to the maximum, engaging full afterburners, the two engines on that monster outran all three without any problem. When the interviewer asked how fast the blackbird took them in that moment, the pilot wouldn't say, only that it easily pushed them to mach speeds they had never seen yet.
Or, you know, the speed of sound traveling through glass. ;)
NEEEEEEEEEEEERRRRRRRDDDD
@@kam2597 you're right :D
@@senilegoldsmith4112 :D
@@kam2597 😹
Dan actually explained the shockwave pretty well
I love these guys so much
Lol who else didnt notice dan was even holding the glass???
If you didn’t say that I wouldn’t have of known 😂
They wouldent have said anything and i would say no there was no glass
5:40 Clarifications from an Aerospace Engineering student. Spaceships don't go at mach speeds because there is no air in space, so you cannot go supersonic. But velocities above Mach 5 exist, they are called hypersonic. So far the only thing that reaches those speeds are bodies returning from space during the descent, called reentry bodies, or atmospheric entry bodies.
@@arturofernandez4058 I think you commented on the wrong thread
I alwasy skip the first ten 20 or 30 secs of any video so i had ro go back to see it. And still didnt get it for a bit.
The slow mo guys: now if we shrink our horizontal and vertical view we can increase our frame rate up to 481 500 frames a second
PC gamer frantically scribling on a piece of scrap paper: IM LISTENING
y e s
The same gamer:what kind of alien graphics card have you bought and where can I get it
*laughs in 8k in just a couple months*
laugh in 144p 5fps
*laughs in 8K and 300 fps*
As a kid (9) my brother (11) and I discovered an AMAZING game where one throws a dart board and the other tries to hit it. Well, we did it facing a sliding glass door and I missed and the dart went into the first of 2 panels in the glass door. The initial shatter was fast but it slowed exponentially as it webbed out to the edges. After I ran down and told my parent and they saw the entire thing looking like modern art, the first thing one of them said was "I'm glad you told us and didn't hide it"... I wasn't known for hiding things before then anyways, so I'm still confused why they said that lol
I hit the thing almost right in the middle, too so the spread was pretty even, and I think there was a safety coat to keep the glass from dropping, because my dad had to actually pull away chunks of the shattered glass. The plus side is, I learned something kind of complex with physics at that age because of it though.
So they are right about the circle thing, and I think the coating + pressure from the frame were what slowed it down so I could actually see what was going on.
Maybe anxiety kicked in and slowed time for me a bit too
On low frame rate this is like the best mime act ever
Am I the only one who didn’t notice the glass Dan was holding at the start until they pointed it out? 😂😂😂
Philip Stephenson thats the joke
Windex!
I didnt either 😂
Teacher: give me one fast thing in the world
Me: a glass breaking
Teacher: how is that fast?
Me: trust me, it's very fast
Legendary Andru just say light.
Is light 'in the world'?
...hm...
You can also back it up by saying it goes mach 4 speed, which is too fast for the human eyes to see properly, now if the teacher says then it should make a sonic boom, say that it depends on the size of the item, a glass that size clearly makes a loud shatter, not making a sonic boom
@@thesandwich5321 ...yes
@@thesandwich5321 can you see things?
My question is...does the amount of force being exerted in the start have an affect on the speed of glass breaking?
That was my question too! Hope they'll respond to this excellent question.
It shouldn't, the speed of a wave does not depend on the amplitude(power/force of the wave).
I like to think that the camera that films at normal speed is literally just a Dan Cam😂