Відео

Basically how inmates make lighters in prison, BUT you could've just boiled the pencil or soaked in hot water for a while softening the glue that bonds the wood together, then split the pencil down the middle and get the led the in tact and not weakened by the heat put through it.

Totally rod ❤

how about those blue light glasses that look yellow, the ones that claim 50-60% protection, and the orange ones? such a nice experiment that lacks a couple of glasses (inputs) that go for 20 bucks...

i just use my 10kV power supply, good enough right?

How did you know I wanted them for electrolysis, no seriously

My pencil measured 30Ω but I only had a transformer rated 7.5V X 1.5A = 11.25W. The pencil got hot eventually, but no smoke. Found a laptop supply at 19V X 4.74A = 90W. Made it smoke and char at the ends a little, but even after 5 minutes, it wouldn't slide out. :(

oh god, i spent $20 for blurey glases 10 minutes ago before i watched this video

I'm getting them not to save my eyes but to help my sleep

Do the safety glasses really block out 98% or is it more? I've noticed in some cases, blue light will fluoresce the material and create green light which is not blocked

Imagine using blue light filter mode and using blue light glasses in the same time lmao

The light that harms your eyes the most is UV, which has wavelengths shorter than 400 nm. But around 400 to 500 nm is "blue light" and from the 400-460nm range is apparently what some studies say is harmful. I bought the clear-ish blue light blocking lenses which claim to block the 400-420 nm range completely, and partially block 420-455 range. I didn't get it to block blue light for digital screens: I got them to block blue light from other sources of light, such as the sun, which is FAR more intense. I think it's worth it if it turns out to be true that those bands of blue light are actually harmful. Btw, props for coming up with that experiment, it was really well done! It's too bad you didn't have the hardware to detect exactly what frequencies of blue lights were filtered out, and what frequencies of blue light the diode was emitting. I'll just take the word of my glasses manufacturer that my blue light lenses are blocking out the most harmful of the blue light. Hopefully I'm not getting swindled lol.

Thank you i know that there is blue light flither on my phone lol

5:04

Thanks for doing this important test for us.

No ! Don’t put water on an electrical fire! Use a fire extinguisher or baking soda!

toxic fume,unwanted

Blue light glasses are the biggest scam! You do not get enough blue light from ANY of your devices to cause any of these phoney claims. They only want your money. Checkout CBC’s Marketplace tv show and their investigation. They talked to the leading eye expert in USA and he said blue light does NOT damage your eyes that there is more blue light coming from sky. People are being royally scammed! Wake up people. Turn down the brightness of your screen and look up every 20 minutes to give your eyes a break . People are just looking too long and not blinking enough and eyes are drying out. Take a rest from your digital screens. You will notice a difference if you do this after a week or sooner not to mention quit smoking and eat more nutrious food like kale and spinach and broccoli in your diet 3 x per week.

It's not dangerous, it just disrupts your circadian rhythm if you work at night. Computer glasses are great for computer work because of their slight magnification and PD setting and the added plus if blue light blocking

When i bought mine the seller told me that the clear glasses don’t block as much as the yellow tent it one

Difference of graphite and carbon? Graphite is carbon that is processed Pencil is graphite yah know

you are awesome!

Lots of effort went into your video. Although your testing methods seem a bit off, good job 👍

We could be good friends

Is that cheap Arduino experiment really better than lab ones? Nope...

Brush your teeth brother

I do online and I'm at a computer 10 hours a day and it hurts my eyes so much I get headaches Everytime

Bro you sound just like Wesley Crusher when explaining all the technical mumbo jumbo

I should wear a spetsnaz helmet....They would save me from blue light and kar98k

You need a photometer!!!

What connected electricity & computer

he's confused between bluelight and light colored blue

how about the glasses plus the setting on your phone ?? whats that meassure?

ua-cam.com/video/UECTTIH4pos/v-deo.html. here is a cool video on light.

Everyone: Blue light is dangerous! Violet light: Am I a joke to you?

Lol. I just bought a pair at the Dollar Tree with no magnification. Yeah. That’s how silly I am. I would love to see how great these work. I mostly bought them because I want to be able to wear pretty much clear glasses while still being able to see though. I think I might have a vision problem, but not anything the Dollar Tree is going to correct with reading glasses. This is about the closest I can get.

Crap!!! Try it feel it then talk. Experiments fail, real doesn't.

Solution:wear 10 of them at the same time

hey its the stupid channe;l

1:57 Its blue because it reflects the blue light. That is why when you wear it you see everything to be more yellow.

FCKING BORING!

The effect from blue light on our circadian rhythm is actually a result of a separate detection mechanism not related to vision, there are sensitive nerve pathways only designed to detect blue light. This was discovered by subjecting completely blind mice to different types of light, and found that they regulate their sleep patterns identically to seeing mice through the use of light and no other variables

Hahahaha then it’s settled I’m buying a welding helmets 😂

Blue light coating has been really helpful to me. My sight hasnt gone worse since 3 years and the scene before that was horrible.

I had one explode a couple of years ago :D

don’t believe that blue light is harmless for your eyes. It can cause some issues.

Blue light (400-490 nm) damages the eye and is a risk factor in age related macular degeneration. With the heavy use of led screens and bulbs our exposure to this light has most likely doubled during the day. This explosion in use is something which has happened in the last 10yrs, give it another 10 or 20yrs and we will be seeing reports about the increase in AMD cases and the age of the affected coming down. Protect yourself, as a population we are the first to be exposed to a multitude of new technology and studies in to the effects of long term exposure of the noise, radiation, light etc. They omit have not been done. We are the guinea pigs. (FYI Look in to 5g phone signals, it is absorbed by the human body unlike 4g).

Your a nerd right!

Im glad I watched this before buying any some of the many glasses I thought were cute. On the bright side, there are yellow and amber fashion glasses that should work just as good as the safety glasses.

All I assume is the blue light no let me sleep [Edit ]ah he brought it up Gimmie the placebo

I find they make my eyes feel better and no headaches