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Idea for extended version of "Sun Jar" Answered

After seeing the recent Sun Jar I'ble, I had an idea (not even concrete enought to be a Completable) for an interestingly extended version. There now exist LEDs for infrared, visible red, green, and blue, and near UV.

It should be possible, with a mix of small low-voltage constant-current power supplies and pulse modulators, to construct a multiple-LED light source which roughly models what we perceive as the solar "spectrum." I don't mean formally reproducing the raw wavelength distribution, but rather the combination of intensities we see (or measure with a thermometer) in a prism- or grating-spread spectral display.

Coupling such a circuit to a solar cell would allow you to build a "Sun Jar" which "collects sunlight" during the day and "releases sunlight" at night. As I said, just an idea...

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Kiteman (author)2008-10-28

Spookily synchronicitously*, while you were typing this, I was in Ikea, buying a frosted-glass jar, just to make a sun-jar as a Christmas gift. The lid is metallic around the edges, but has a window in the top.

The 0.9 litre version.

*The reason I said "spookily synchronicitously" is because it's quite pleasant** to imagine people all over the planet trying to say that phrase without spitting crumbs all over their monitors...

**Schadenfreud

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kelseymh (author)Kiteman2008-10-28

Wow, footnotes within footnotes! You must have been an English major (perhaps the very model of a modern English major?) at University...

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Lithium Rain (author)kelseymh2008-10-28

They don't come any more English than Kiteman.

When they made Kiteman, they broke the mold...

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kelseymh (author)Lithium Rain2008-10-28

"When they made Kiteman, they broke the mold..."

After, or before? ;->

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Lithium Rain (author)kelseymh2008-10-28

Haha! I think during the process! That's why he's a bit "cracked"...

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Kiteman (author)Lithium Rain2008-10-28

Gives all assembled the look, generally reserved for reducing the recalcitrant to the repentant.

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Lithium Rain (author)Kiteman2008-10-28

>smirks< Didn't work on me...

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Kiteman (author)Lithium Rain2008-10-28

Resorts to a sharp poke in the ribs.

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Lithium Rain (author)Kiteman2008-10-28
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Kiteman (author)Lithium Rain2008-10-28

But my fingers are hardened by years of poking small, obstreperous children.

Digits of steel.

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Kiteman (author)Lithium Rain2008-10-28

Ah, the joy of google... ;-)

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NachoMahma (author)Lithium Rain2008-10-28

. And rumor has it that they executed the mold-maker. :)

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Kiteman (author)kelseymh2008-10-28
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Sandisk1duo (author)2008-10-27

umm.. it's best that you get a blue, green, red, and uv led, all the same lumens (ir is kind of pointless)

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Kiteman (author)Sandisk1duo2008-10-28

It depends what you make the jar of - most normal glass is opaque to IR, which makes you correct, but some materials are transparent to IR.

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Lftndbt (author)2008-10-28

LoL at you completable reference.

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NachoMahma (author)2008-10-27

. Wow! I typed Solar spectral simulation with LEDs into Google and it came up with some interesting stuff that should help. I really didn't expect it to work so well. I <heart> Google.

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