How to make LED Throwies
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- Опубліковано 18 гру 2014
- Use a battery, magnet and LED to make glowing balls of light that will stick to anything magnetic. Then throw them at things. Drive a car covered in LED throwies.
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Kate shows you how to combine three cheap components to make throwable lights that provide endless fun. Head out into the world armed with a box of LED throwies and see what you can brighten up.
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To everybody watching, please don't throw these at my car.
Thanks.
led: 3 cents. neodymium magnet of that size and power: 10-20 cents. battery of that size and power: 3 dollars. and the battery also happens to be the single-use part of the assembly.
Where I live, you can buy 2 of those batteries that last DAYS on an LED, and they aren't but a dollar!
I'm in love with Kate from now on :)
>Not using any InGaN LEDs.
Get on my level
This seems like something I can make with my kids
It is, I've made these before and had a blast. Just be careful where you throw them, some local authorities may find people hurling magnetic lights at street signs at least a little suspicious. We've been confronted before, and asked to keep them on our property. :p
Am I the only guy on here who thinks she is absolutely enchanting and extremely cute?
I wouldn't say you're the ONLY one, but you are most definitely hard up for quality cooch if you think she's _'absolutely enchanting and extremely cute'_ per se.
I know where you can stick it! :)
too bad those batteries are really expensive (where I live at least)
Really? Where you from?
Over here in the Netherlands they are €0,85 for a blisterpack of 12.
LMAO!
Yeah, like all those batteries and Nd magmets are gonna be cheap...
It may be more feasible to make the penny batteries from The King of Random
Haha imagine putting this all over an unattended police car, they'd probably call the bomb squad!
The battery has to be 3 volts. I found them from $7 to 15 cents.
You can replace the battery with salt water, carbon and magnesium - it's cheaper and can be reused.
UA-cam: /watch?v=Mw9jS9loVKk
For how long does it last?
0:28 "Once you've built them they'll stick to any ferromagnetic surface, which means almost any metal"
No it doesn't. Ferromagnets will basically only stick to iron and steel. This is the Royal Institution? There are about 90 elemental metals magnets won't stick to. Come on...
While this is true and it could have been phrased much, much better most metal objects you encounter in day-to-day life are made from ferromagnetic alloys of some sort.
Shut up douche, you know what she meant.
You seriously have time to get that worked up over a throw-away comment? Must be nice.
[@OP] Well, part of the Royal Institution's mission "has always been to encourage people to think more deeply about the wonders and applications of science, ". They engage with the public, who don't usually care for those kinds of details...
Indeed. ಠ_ృ What a cursed travesty this is! ಠ_ృ Completely unacceptable that the RI would use loose commoner vocabulary, for a video aimed at the common person. ಠ_ృ
I am utterly upset and apalled by such reckless abuse of the English language and this is sure to irreparably attentuate modern language as a whole. ಠ_ృಠ_ృಠ_ృಠ_ృಠ_ృಠ_ృ
Gerroh G lol
And THAT'S how you do it ladies and gentlemen!
How long do they typically last?
2 years....
Realistically they last around a week.
Lol the thermos.
Just don't drive with that car on a highway, as these LEDs could fall from car and hit other cars and make an accident...
Indeed. - it's difficult to think of a more stupid place to "deploy" them - and motor vehicles need to be understood by children for the dangerous pieces of machinery that they are.
It may be worthy of Snopes, but I've heard a report of a small child swallowing more than one small magnet and them finding themselves in adjacent parts of the bowel, clipping together and causing a blockage or perforation.
As one who grew up with magnetic media and cathode ray screens I'm very wary of having magnets around the place.
I also have as little to do with disposable batteries as possible - especially lithium ones.
All in all very unimpressed - and this is coming from someone who grew up with lighbulbs, batteries and onto electronics.
yangtse55
I bet everybody at a party stops laughing, having fun and then leave when you show up.
What a waste of money
Genial, genau die für die Umwelt schädlichsten Batterien *facepalm
What a waste 😥😑
the art of pollution... no words :-(
What a waste of resources. Luckily nobody has to do this anymore, as it's already on video.