This Light Lets You See The Strength Of An Object
Vložit
- čas přidán 27. 10. 2021
- New Customers Exclusive - Get a Free 128gb Flash Drive and 128gb MicroSD Card at Micro Center: micro.center/95b89d
Join the Micro Center Community: micro.center/2dea26
In this video I talk about birefringence and double refraction. I show you how polarized light can be used to see the stress locations inside of anisotropic materials.
Get Your Experiment Box Here: theactionlab.com/
Checkout my experiment book: amzn.to/2Wf07x1
Twitter: / theactionlabman
Facebook: / theactionlabofficial
Instagram: / therealactionlab
Snap: / 426771378288640
Tik Tok: / theactionlabshorts - Věda a technologie
“How to see failure”
Me: looks in the mirror
Same
Why are you looking in the mirror?
@@windowsxpmemesandstufflol cause he can't look at you 🤦♂️
lol
Lol yep 😂
I wonder if this would show my stress points. Man would I light up like a Christmas tree haha.
😂😂😂😂😂😂😂😂
💀
If u are talking about mental stress your brain will be a bulb and if u are talking about stress on muscles, bones etc u will be a human torch
hey man, your corona motor was awesome 🔥🔥
that's like that deer picture in infrared.
Using this sheet we can finally see failure in materials.
Parents: Look what they need to mimic a fraction of our power.
*asian parents
wait no actually just all parents
😂😂😂
@@bootscats2928 im glad i didn't have to correct you lol
Man that show was dark
Could you put a Prince Rupert's drop? Where should the stress location be? in the tip? or tail? Because you mentioned the stress point marks the weak spots, but I think the area with the highest stress would be in the tip.
Yes
Do you mean the tail?
I was wondering the same thing
@@eekgarink8257 ...seriously... on all of the posts you could comment this on
You comment on a genius idea...
The stress should be all over, as the skin of the drop cooled faster than the center. So your stress will be on a radial from center outwards, not along the skin.
Explains why my car's rear windshield looks like a mess of rainbow spots when I look at it wearing my sunglasses
Only polarized ones.
@@DrDeuteron Or maybe he means when the light reflects off of the surface of the glass. That partially polarizes the light.
look out an airplane window while wearing polarized sunglasses 🌈
stressed birefringence, as said above its because the glass is tempered. Literally the same thing that he discusses in this video stress birefringence is causing the effect you see on your windows.
In the US, windshield glass is laminated not tempered like the side and rear glass (and windshields in some other countries) so the polarized light is seen differently which explains some of these appearances through polarized sunglasses.
The way my mom sees failure is by looking at my report card lol
This channel is a gold mine, this guy has been putting so many videos for so much time and he isn't getting as attention as he really deserves! I learn something amazing from every single video, he has now become like a mad scientist in my mind and every video I'm like "oh mah gad what is he up to this time?" XD
That's why he has over 3 million subscribers and thousands of views in every video
At this rate I won’t be surprised if he renames his channel from ‘The Action lab’ to ‘The Awesome lab’
It was Hydraulic Press Action to start with.
Glass artists will also use this method to see if there are stresses in the pieces they make that will cause the piece to eventually fail. This is especially important for anyone doing fusing, as glass has tight tolerances with their Coefficient of Expansion (COE). Glass artists that do slumping and fusing will typically work with glass that has a COE of either 90 or 96, but they RARELY ever mix the two. Because COE 90 and COE 96 glass expands at different rates, this difference will eventually rip the piece apart of you mix the two glass.
I have some samples I can send of mostly COE 96 glass, with one sample piece made with a mix of clear COE 96 and White COE 90. (There was a mixup at the shop where I bought the glass, so we ran some test samples. I also bought a pane of COE 96 White to be safe. Yes, the test revealed I received COE 90 in my order. I can send you the test samples.
Rupert drops (glass) look really cool! We can see why they “explode” when the tail is broken.
There is a video "Prince Rupert's Drop at 100,000 fps" which shows it shattering under polarized light, but it would also be nice to see the stress lines in more detail.
Damn, the title of this video had me hoping that there was a light I could shine on myself to see if I'm a failure...
You're such an alpha at failing that you don't even need lasers or polarizers to be a failure king-wizard. j/k lol
Why do you need the light to tell you what you already know
If you want someone to talk to or if you want me to pray for something then just let me know.
Sorry if this is weird I know I am a stranger.
I just like to help.
Regardless wish you all the best and have a great blessed day and life! GOD bless
@@thechristiangamer7311 Thanks man! I appreciate it. But it was just a joke lol. I'm not actually worrying about being a failure :)
@@Kansas-uo6ks Oh ok cool your very welcome my pleasure.
Glad all is good if you actually do want to talk to someone then please don’t hesitate I like to help.
Regardless once again my pleasure glad all is good and wish you all the best and have a great blessed day and life! GOD bless
I see failure everytime I look at a mirror lmfao
When I was an optician, we would determine and try to minimize the stress levels in eyeglass lenses in frames by shaving small amounts of material off the lenses or slightly adjusting the frames to fit the lenses better.
Mirrors a great way for me to see a failure
You made me laugh, so therefore you're not a failure. Atleast not in my opinion. Have a nice day.
Task failed successfully
"How to see a failure"
Me: **Accidentally does this whole thing to myself** as expected
This is quickly becoming my favorite channel 👍
This technique is useful for checking the quality of glass vessels as well. For example, a 5 gallon brewing jug. You can spot the cheap knock offs immediately, and it really, really matters. Lots of people have had the bottoms just fall out of them lately.
Just wanted to say, you do a great job. I love your videos. It's awesome that you are able to make this type of content as your job. American dream! Keep it up.
Finally a flashlight that my parents can use to find me.
*Much better and intuitive than those boring black board classes* 👍
"How to see failure"
opens front camera on phone
Action lab: how to see failure
Steven he’s dad: I’ll take your entire stock
I'll buy 5
You always have such interesting material!!! And unique) Thank you!
"Let's" is "Let us"
"Lets" is what you're looking for here :)
EDIT: Looks like it's all fixed, and my pedantry is satisfied haha
VERY cool video, by the way! I think I could entertain myself for hours breaking plastic spoons and being amazed at how it broke in the "stress spot" every time!
And here i am, complaining about how every fifth youtube video is full of "let me". As like i can say "no, i won't let you do that". Huh...
Lettuce. :)
I saw this before and I understood how this technique could be used to interrogate the internal stress levels in materials. But seeing the the spoon example was brilliant and revealing. I’m showing this to my kids right now. Thanks James, fine work your are doing there.
Nice to watch in real time. We used to use FEA, Finite element Analysis to find the stress points in any element.
Matrix boy:
"There is no spoon"
Action Lab:
"Hold my polarizer"
Thank you for yet another fantastic video! Can't beat a bit of stress!
I've noticed this just looking at reflections of my screen in transparent plastic obdjects, there are rainbow colours in the reflection.
I wonder if the light is passing through the material and reflecting off the back surface... I don't think you can have polarizing mirrors, just filters. The light from an LCD screen is polarized so that's at least half an explanation right there. I'll have to try that some time.
Yes, same here!
@@DFPercush Mirrors are polarizers, at least in part. Look up *Brewster's angle.* It works better for insulators, than metals, but at that angle, the light is completely polarized in the plane of the material surface.
This was a certified" hOOd" classic
Very interesting to use light and polarization to find weaknesses in materials. Great video
Steven's dad : "FAILURE!"
“How to see failure”
Asian parents: look what they need to mimic a fraction of our power
The thumbnail "How to see failure" I immediately thought I can just look into a mirror.
So many “looking in the mirror to see a failure” comments…
Guys pls be a little more original XD
They are failures. What did you expect?
I have SO many questions and ideas about how this could help us understand our planet. Very cool!
Seriously I enjoy your content so much.
@The Action Lab 2:00 And if you think about it, that actually explains why the order of colors in the materials are the *same* as the order you get in thin film interference! As the thickness varies, you get a variation in the relevant phase between light rays of differing wavelengths, just like in thin films. This is so cool, and helped me understand the colors from polarizers better, thanks!
I remember using this form of stress analysis in high school physics, back in the 1970s.
As for the sponsor, Micro Center, I use to visit one near my job, when I worked in Irvine, California. Its good to see them thriving, as their competition Fry's, just called it quits, in early 2021, and have been spiraling downwards, since the mid 20-teens. Another competitor, Computer City, bought it, nearly 20 years ago. Computer City, was a chain owned by Radio Shack, who also hit hard times.
thanks so much for making this vid. I suggested it a while ago, although it might be coincidence.
I knew you'd do an awesome job explaining it though. I wish my teachers had been as competent as you because I never did understand how this phenomena actually works until now
Thanks for this amazing channel !! Over the top of my ignorance I'd ask, isn't some (or all) of the color changing happening because the change in angle of subject surface, consequently changing polarization degree ?
Not only does Mr. Action Lab guy explain so well what's happening with his experiments, but also the products his sponsors are selling. His hands-on demo of that submersible what-cha-ma-call-it was excellent! I suspect that company saw a bit of a spike in sales very soon after this video was posted.
As always, an excellent video.
im interested in the uses of this in relation to 3d printing, of different materials, and even different settings and where it changes the stress to such objects...
any chance of a video on that?
If you noticed, he was testing *INJECTION MOLDED* items!!! Probably wouldn't show so much on FDM/FFM (lines & layers might obfuscate) whereas Resin might work better as it's more homogeneous with less visible layer lines. Either way, the material would have to be transparent enough for light to pass through for this method of analysis.
@@fookingsog you can find transparent PLA(well...opaque PLA) though there are tons of ifferent materials that can be printed that might show up (ABS, TPU, nylon/carbon fiber, etc..) especially if you just print small prints that are thin enough to use the 2 polarized squares....
then again, thats just my thoughts and opinions, and I could have be wrong...
it just *seems* like certain tests could be feasible
I don’t be knowing what this man be talking about. But I like watching it.
Great Video.This channel is gold.
"How to see failure"
Steven He: perfect, just what I needed to see my son's failures
It didn't take that long to find a Steven He connoisseur
One of the coolest vids on the channel. At least lately
Really insightful 👍
You make me fall in love with science everyday. Thank you so much for that!
I had a summer job in a glass factory back in 1969. We inspected CRT face plates using this method. If the stress lines showed up as certain colors or size, we would scrap the parts. As in your tests, if you dropped a scrapped piece of glass, it would break right on the stress lines. Great video.
This is a m a z ing !!
Thank you so much for showing and teaching me/us so many things!
Thank you!
0:15 - I saw the short on this and immediately came to find the full video. not sure if you realized what you had here, but that's a Sun Stone. how you can navigate when its grey and overcast and you can't see the sun. the technique covered 1/2 of the stone with a leather strap, that's exactly why it worked. have a sub for showing that!
Asian parents: “look at what they need to mimic a fraction of our power”
That was incredible!
Watching this while stoned was bloody amazing bro
Amazing as always
I really like this video thank for making it
Nice! I was hoping your interference colors video would lead into this subject. Now next time you see rainbow colors in a reflection of a plastic item you can understand that it is birefringence.
Being able to predict the breaking point on the spoon was I think one of the coolest parts of any video you've ever done.
Wow..thank you so much for your work ,time,efforts and interests.you have been a outstanding asset to my research and I simply can't thank you enough..your understanding of light has been a invaluable asset to my understandings of reality...I know you are probably a crazy busy man but if or when you have time ,would you cover a segment about television pernel lensing and it's attributes? I saw a stone and metal melted and infused together into a glass substance using a large pernel lense and sun light...is this truly possible? I understand some pernel lenses have Stronger effects then others...anyhow...your the man...excuse my language but ..fucking outstanding...
I remember an exhibit in the Deutsches Museum in Munich, consisting of an acrylic(?) wrench on a bolt head inside such an optical array.
The end of the wrench was accessible so if you pulled on the wrench you could see the changes in stress in the contact points with the bolts head.
Need to use this method on different types of metals _and_ alloys
One of my favorite videos ever😍
Very cool! I always enjoy your videos. I do miss our old collabs with Steve, A.K.A. Rimstarorg, Grant, James Hobbs, and all the old kats but, I hope you have been enjoying your journeys, throughout the scientific spectrum, which it would seem that you have been. Just saying that I pretty much miss you guys! 👊
Have no idea if you'll read this or get it or respond to it or whatever. But I just really want to thank you for what you do. This video specifically was very awesome. Really opens your mind and gets you thinking of how you can apply these things that hasn't been already thought of. It really gets people like myself thinking outside the box your experiments show that there's more to your world than meets your eyes and these components need to be applied in those ways.
Was waiting for him to break the spoon, for a sec was not sure if he was going to do it but was very satisfying when he did. Great video did not disappoint.
Sweet deal on the free storage stuff... luckily, I have a Microcenter about 30 minutes away. I love that place! Cool video, too, by the way. My preschooler loves color spectrums (okay, so do I) and now I know an easy way to show him something cool. Thanks!
Wonderful repurposing of single use cutlery. So cool!
I worked as an engineer at a dvd/blue ray/game disk manufacturer for many years, this is also how we checked the moulded stress in the disk substrates , not for potential breakage points but because the moulded in stress changes the laser path in an optical drive and can make the disks "warp" over time as they try to release the locked in stress....did you know there are many classes of blue ray ranging from AA to D depending on the data quality after moulding and lacquer deposition imprinting processes... If you have a disk that only plays in "good" players it's probably a lower tier disk and the player has to reassemble the data from the reference/sub frames.
This is awesome!!!!!!
When I worked in thermoforming, we would do this all the time to see how the forming of plastic. When the stress was high we needed more heat and when the stress was to low, less heat.
I learned this ages ago but didn't know what it was called. Cool
This channel feels like an infinity source of forbidden knowledge 😁 Keep the content coming my dude :)
Goshhhh... You are from another world.
👌👌👌
Every time I watch your videos I get amazed 😇
I actually saw this technique when watching someone explaining why cheap carboys easily break at the bottom and that Italian made one doesn't have such weaknesses because of proper annealing process.
The Action Lab that was interesting and actually easy way to experiment at home. Thumb up from me
"how to see failure"
Ask an Asian parent
this is fascinating
This is great video 🔥
I've got a question for the action lab,
You've always used the pressure chamber for decreasing pressure, but have you increased pressure before?
Congratulations. You’ve actually created mace windu’s shatterpoint ability in real life. I wish there was a way to easily do this on anything at a moments notice.
As a polarized light source you can just use your computer monitor. Most monitors nowadays are LCDs which use the polarization of light and nematic liquid crystals to swich (sub-)pixes on or off. Really fascinating technology.
The color bands you see in plastics are also used in research on granular matter like sand or corn grains. There you use round disks of plastic in 2D, put some weight on them and then see in the polarized light color bands in the plastic where they press on top of each other and how the force of the weight is distributed through the disks/grains. You then observe these force arcs.
i only watch you for fun and sometimes learn new things !
This is really interesting because one time this happened to me when I was watching tv and putted a plastic Tupperware in top of my glass table, and a rainbow pattern appeared on the plastic. At the time I wondered what was it, and this video finally answered!
Great video! Funny Micro Center story - I was graphics card shopping at Frys (RIP) and then I went to Micro Center. When I got the to graphics card area, I see the SAME dude... Confused I ask him.... Do you work at Frys?!?! Nope it was his TWIN BROTHER
Schroedinger's PC Technician...😂🤣😆
This is incredibly cool
That was so cool. 👍
I'd like to know more about why the orientation changes the colour patterns. Is it related to the orientation of the stress forces in the material? Like we're look at one "slice" of a coloired 3D graph with radians on one axis and the colour patterns on the plane on the other 2? Or are the colour patterns just based on the random imperfections of the plastic's lattice and we infer stress from that?
HEY, nifty video as always but can you slowly heat that plastic spoon to relieve the stress and show that with the polarizers?
Reminds me of the Japanese anime 空の境界。The "death line" actually exists! The main character's eyes can discern the stress points of everything. Maybe in reality, we can wear polarised goggles to see these stress points, it can be quite useful. Magical 👍🤩
"How to SEE failure"
Well, you'll need an appointment to see mee,
I am a chemist and understand this stuff but always learn something new
''How to see Failure'' you don't even need to test it, I can already see it by looking at a mirror
This is very cool. You only demonstrated with clear or translucent materials. Can you use this technique with an opaque item like a bridge beam?
They use ultrasound to detect micro fractures in racehorses before they shatter, so can rest up for a while instead..
well done, man
so weird seeing micro center advertising still. been going there for so long feeling like a secret club
This man is the smartest person I've ever found on CZcams
Thumbnail: “How to SEE failure”
Me looking in a Mirror: “I think I know this one chief…”