What Happens When Light Shines on Photochromic Glass?

Will the chemistry wear out and won't have the change after sometime or someuse?

Extract the silver and sell it.

amazing

My glasses actually work like this it’s really cool so I don’t have to switch my glasses

dat haircut doe 😂

Is photocgromic glass better than sunglass ?

I s there a way to extract the silver from the glass?

Can i use it as blue ray protector ???

I have a strange question. I'm thinking of tinting my headlights with photochromic film which seems to be quite effective in daylight but something that none of the videos dealing with the subject cover is how it reacts once the headlights shine through it at night. According to the advertising, the film becomes totally clear in the dark. Would it be correct to say that because there's no UV light coming from the headlight bulbs (incl. LED's), the film will remain clear?

You always do a good job. That was really cool to learn about that.

It would have been really cool to have another animation to go with the photography example.

What really would have been cool is to have a b-roll of you and your wife working on that painting during your describing it. Or at least I have a picture of it when you were talking about it.

These glasses only react to a specific wavelength of UV light, which unfortunately is blocked by most car windshields. I work in an underground mine and when I come to the surface, to activate them I roll down the window and hold them to direct sunlight for a few seconds.

Is this the same or similar technique that welding helmets use to darken their shade?

They can move in a crystal?!?!?!?!?!

I wonder if you could 'print' a picture on those lenses by using a dark room with a small hole on it

best investment in life

I buy those glasses they have ones thay change color faster than other
In those what is diferent to do that?

Could you put the glasses in a camera and make a photo?

I ALWAYS WONDERED why my color changing glasses would take SO LONG to go back to normal during the cold season lmao

hi, please share the link to buy the violet laser. thanks.

Not glass. It’s a trivex front.

I had glasses like this and they were the worse I ever had. The were terrible as sun glasses and considering I live in Canada any time I went out in winter when it was sunny and the went back in the gasses would clear in splotches on top of fogging up and it made it super annoying to see. You're better off buying both normal glasses and sunglasses.

If only this reaction was way faster, would be good for driving in and out of dark tunnels on a sunny day.

Really awesome Video! I'm in the optical industry and this is more informative than most of what we get. My only issue is that glass has become nearly nonexistent and we use different materials for the lenses. Also it was only mixed in with one, now defunct brand of lenses, now it's a sandwiched thin sheet between the monomers or polymers used. Again though this was amazing

I was wondering how self-darkening sunglasses work. Thanks, now I know it.

I had a pair of photochromic glasses in the 80s. For some reason, they gave me a headache.

In one part of the video you're saying the electron is coming from the chlorine going to the silver, and another part of the video you're saying that a copper ion is giving up an electron to give to the chlorine but the copper ion has a positive charge to begin with so already has a positive charge making it less likely to give up electron as it's already an ion, you also said right after that copper ions want to accept an electron, that much makes sense is as it has a positive charge.
But most people aren't going to know that copper has more than one oxidation state unless you tell them.
It's also hard to tell where you're talking about the light reaction versus the dark reaction, for instance that copper atom better be right there to stabilize the chlorine while in the light.. Without specifying some of these you sound almost like you're contradicting yourself or incorrect because how could you make an ion an ion if it's already an ion when you don't understand that they could be more than one state.

Also I am no expert at photochromic glass and do not pretend to be, but I do know that an aqueous solution if you have silver ions and put in copper, the silver will drop out of solution because the charge prefers to go to the copper making the neutral solid silver and dropping out, it's not supposed to work the other way around like it sounds like you're describing.
Fortunately I remember enough from basic high school chemistry and the electronegativity series that that happens because silver is more stable with that electron, that it's attracting the electron not the 'charge'
Basically the way you're explaining it you could either sound blatantly wrong or that there's something missing you need to explain that you're not explaining!
I'm sorry , but the quality of the science in your videos is going downhill, I understand you have to dumb things down for the layman and I defend critiques about your so-called errors and mistakes saying that you just oversimplified a little... But I was listening to this and well it just took the cake , last straw, and I had to comment.
Please add a little more detail,
There should be enough detail that someone who has never heard about any of this and has never understood any of this before to turn around and explain why this works to somebody else without them having to already know a bunch of stuff for it to make sense.
I'm pretty confident that's the audience you're trying to cater to, but you never said so, I'm correct right?

That's my man doing things I never thought cab be possible

What if we shine gamma rays on the glass?

These are like transitions then?

This was one of my favorites. I've been fascinated by that since i was young.

Do the double slit experiment here

dude seriously needs a haircut

My dad has same glasse i tested Sunscreens on it

Went snow skiing I could barely see
Through my glasses After going inside.
They got darker longer.

How ions can move in solid?

But silver is shiny not dark

So cool and easy to understand.

Optician here... are your photochromic lenses actually glass?

Actual glass lenses are uncommon in the optical industry nowadays. CR-39 (Plastic), Polycarbonate, Trivex (a urethane-based pre-polymer), and High Index (Plastic with a high refraction index, usually 1.67 or greater) are typically used instead of actual glass.

so do your glasses ward off warewolves lol

my glasses do this, but with a muc hmuch weaker laser, because of my transition leses or somthin, its turns to sunglass mode with bright light, i was so scared when i accedentaly put a laser on my glasses (i was not wearing them)

I had photochromic glasses for a while but I ride motorcycles and the helmet visor stopped the glasses from going dark. So I'd be riding in bright sunshine with photochromic prescription glasses and having to wear sunglasses over the top. I only got them that one time and when the prescription needed updating I went back to standard. However, they were entertaining to fiddle with through meetings etc where I'd put my finger over the lens and hold them in the light so they'd colour up in patches. Still a kid in an adult's body. 🙂

my man needs a lint roller.

I thought I killed my glasses 😆 then was like give a an hour or two...

I was wanting to know how the transition glasses worked and now I know it. Thanks!!

have you tested different colour light when it’s silver one might turn it back quicker? 🤷‍♂️🤔🙇‍♂️

So-Where's-Your Silver-Chloride-CRYSTAL Experiment (Prep-PREPPED) ... In-Order-To ... 'Round'-OFF This-EPISODE!!!??? >(*U^)< (Joke) Wink

Always wondered why they took forever to transition back after walking in from a cold winter day

so i just ordered a pair of glasses like this about a week before this video dropped. nice to get my questions answered before i even tried to look it up! i do have a question remaining: there were 2 color choices. one was grey like in this video, but there was also a brown color. what chemicals need to be in the crystal to make it brown?