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Battery/LED challenge. play if you dare!


YT2095

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this is just a bit of fun for anyone that wishes to play.

the challenge and the rules are simple :)

 

you have to make your own battery(s), enough to keep a simple 4mm red LED lit for as long as possible.

it must be a stand alone device with no other power input (so a rechargable battery is out of the question), and weigh no more than 250 grams.

 

the timer starts as soon as the LED is lit, and stops as soon as it can longer be seen as lit in a dark room, the object is see who`s LED stays lit the longest :)

 

honesty is essential obviously. please post your results here along with methods used, and Good Luck ;)

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maybe, but who will win?

it has to be under 250 grams total, and left alone once lit.

LED voltages are between 2.5 and 3 volts, blowing the LED up (burning it out) is a FAIL.

I for one am keen to see the results and methods people come up with.

you`re allowed more than one attempt, but oviously, Post your best one :)

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OK MAJOR INTERVENTION HERE...

LET ME POINT OUT THAT AN LED IS NOT LIKE A LIGHT BULB!

IT DOES MATTER WHICH WAY YOU CONNECT IT!

IT HAS A POSITIVE AND NEGATIVE WIRE AND WILL NOT WORK WHEN USED THE WRONG WAY ROUND!

SO BEFORE YOU THINK YOU`VE FAILED, TRY WIRE IT THE OTHER WAY ROUND! ;)

 

sorry for caps but it was important :P

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Well this challenge is open to anyone, and not everyone knows what a diode is or how it works, esp one that emits light.

most physics 101 students are familiar with light bulbs, a LED is NOT a light bulb.

the challenge is NOT an electronics one (so I explained the potential LED problem) it`s a Battery Challenge :)

 

if you bulb wasn`t working, would try it "the other way around"?

of course not! and so anyone that didn`t know the difference between a bulb and LED is NOT stupid! the ones that pretend to born Knowing all this stuff quite obviously would be ;)

 

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ok mines done and working.

it was activated today at 12:53 pm GMT

 

pictures here: http://www.yt2095.net/experiments/battery.jpg

 

and without the camera flash, you can see the LED lit here:

 

http://www.yt2095.net/experiments/battery2.jpg

 

when a few more have done theirs and are lit, I`ll post what I made it with and how long it lasted (or didn`t LOL).

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It`s finaly died, the electrodes corroded off.

it`s worked now for a good 5 days and 22 hours.

( 5 days longer than I expected it to LOL :)

 

I used magnalium as the cathodes and brass foil as the anodes.

and a weak solution of sodium hydroxide as the electrolyte.

 

so, 5 days 22 hours is the time to beat :)

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