This Light Lets You See The Strength Of An Object

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.

[PlasmaChannel]

I wonder if this would show my stress points. Man would I light up like a Christmas tree haha.

[UCrmaNCysyZipDZotXnZA]

Using this sheet we can finally see failure in materials.
Parents: Look what they need to mimic a fraction of our power.

[VicNistelrooy]

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.

[Sheevlord]

Explains why my car's rear windshield looks like a mess of rainbow spots when I look at it wearing my sunglasses

[thunder_]

“How to see failure”
Me: looks in the mirror

[-_Nuke_-]

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

[RickLambert]

Rupert drops (glass) look really cool! We can see why they “explode” when the tail is broken.

[Blahnik]

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.

[jackielinde]

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.

[sirseagull]

The way my mom sees failure is by looking at my report card lol

[bunchofatoms]

At this rate I won’t be surprised if he renames his channel from ‘The Action lab’ to ‘The Awesome lab’

[PapaWheelie]

This is quickly becoming my favorite channel 👍

[Kansas-uoks]

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...

[chrisramos]

I see failure everytime I look at a mirror lmfao

[KasperWalking]

I don’t be knowing what this man be talking about. But I like watching it.

[getyerspn]

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.

[DFPercush]

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.

[raunter]

"How to see a failure"
Me: **Accidentally does this whole thing to myself** as expected

[andy]

*Much better and intuitive than those boring black board classes* 👍

[liquidhaste]

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.