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  #1  
Old 04-05-2009, 06:40 PM
Vortex Vortex is offline
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Thumbs up 2-Liter Bottle as a 50 Watt Light Bulb HACK

"On average, the bottles produced as much light as a 50 watt incandescent bulb".
Video link
Source link

Can someone explain to me how adding in bleach is required..
what is the bleach doing ?
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  #2  
Old 04-05-2009, 07:22 PM
everwiser everwiser is offline
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Keeping the water/bottle from growing algae/mold.
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Old 04-05-2009, 11:44 PM
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Growing algae
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Old 04-06-2009, 01:42 AM
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A penny saved is a penny earned.

I like it.

Return on Investment (ROI) is probably pretty quick. Haha.

Compare with:
10 Inch Natural Light Tubular Skylight Solar Tube 10" - eBay (item 350078790824 end time Apr-07-09 21:55:50 PDT)

Peace
PJ
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Old 04-06-2009, 12:35 PM
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It's always the simplest ideas that are the best. Imagine if every blokes shed here is Aust had these installed. It would mean a pretty big saving, and talk about cheap to install.

I have windows in my shed, but I still need the lights on.

Cheers,
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  #6  
Old 04-06-2009, 01:17 PM
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You could probably extend the bottles so they work through and attic space, Maybe you would have to tape the bottle extension with foil or somthing.

Those are cool.

Matt
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Old 04-06-2009, 04:46 PM
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Install close to ridge line

What a great discovery.

To keep chance of leaks down. Install high as possible on roof line where less water runs during rain
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  #8  
Old 04-06-2009, 06:24 PM
seth seth is offline
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Do they continue to glow for a while when the sun goes down??

Spose I'll have to make one and see.....looks pretty simple
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Old 04-06-2009, 07:55 PM
cody cody is offline
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This is an awesome simple idea. Im wondering if the bottle were extended into a tube and bent if it would behave as a cheap simple fiber optic line. Im also wondering how long the bottle will hold up in the sun as plastic likes to degrade. There is possibly lots of room for improvement on this great idea.

Seth,
These should not continue to glow after the sun goes down. However, your question brings up a great idea. You could add some phospho Luminescence or other glow in the dark chemicals to the water to get it to stay lit when the sun goes down. Great idea!
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  #10  
Old 07-08-2009, 11:51 AM
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The water/pet pransition defracts light, the shape...

a lense - brilliant (pun not intended)!

Only question, what to do when the supply of polycarbonate waste is depleted?

...did You notice all that botles where Coca-Cola (tm)?

best regards,
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Old 07-08-2009, 03:08 PM
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Iotayodi Iotayodi is offline
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Quote:
Can someone explain to me how adding in bleach is required..
what is the bleach doing ?
Im seeing heat and expansion or pressure causing a chemical reaction.
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Old 07-08-2009, 03:29 PM
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Bleach is to inhibit growth of algae so the bottle doesn't turn green.
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Old 07-09-2009, 03:25 PM
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Quote:
Bleach is to inhibit growth of algae so the bottle doesn't turn green.
Yes but that doesnt explain the light staying on till midnight.
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Old 07-09-2009, 07:02 PM
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Originally Posted by Iotayodi View Post
Yes but that doesnt explain the light staying on till midnight.
The lights DON'T stay on till midnight, they only work when the sun is out.
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Old 07-09-2009, 07:38 PM
Cloxxki Cloxxki is offline
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I think the difference of a tiny ceiling window in an otherwise sealed room is underestimated. Surely these bottles get a lot of the sunlight down, and it's light enough inside, but the slightest non-bottle hole would do a lot as well. The diffusing of the light seems to be the most important feature?
If you want to only have a small hole in the roof, perhaps mirrors (I know, lose shine quickly) could be added on the roof to channel sunlight to the bottles. Perhaps also against the ceiling from the inside around the bottle.

Interesting would be whether a square meter stuffed with these bottles would get more energy into a solar panel underneith vs. the same panel on the roof.
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Old 07-09-2009, 11:33 PM
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The lights DON'T stay on till midnight, they only work when the sun is out.
Then the midnight statement is completely misleading. This still wouldn't work well in the states as most houses have trusses and insulation.
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  #17  
Old 07-10-2009, 11:23 AM
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It's only for the poor without insualtion countries
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  #18  
Old 07-11-2009, 03:54 AM
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Clear PVC pipe wrapped with tinfoil or flashing..... They work great in a shed, carport, or Garage with no power.

Matt
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  #19  
Old 07-11-2009, 05:28 AM
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I guess this is a simple version of fiber optic lighting in Japan. Light is gathered with mirror and glass and transfered trough fiber glass to reach place far from the sunlight.
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  #20  
Old 07-11-2009, 06:34 AM
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morpher44 morpher44 is offline
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another idea -- solar panel water bottle

Here is an idea.
One problem with solar panels is you have to create a complicated
sun tracker to keep the panels aligned and aiming at the sun
through-out the day.

What if you were to instead mount the panels around a
LARGE cylinder filled with water. Let the top part of the
cylinder get exposed to lite, like these bottles, and the bottom
circumference be surrounded by solar panels.
The light would come into the cylinder, refract all over the place,
hitting each panel through-out the day.
Nice!!!
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  #21  
Old 05-07-2011, 03:51 PM
yero yero is offline
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thats a brilliant idea morpher44,if a 2 liter bottle produces 50 watts then a big cylinder would produce maybe even 10 times more men your are a genius
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Old 05-08-2011, 12:25 AM
gravityblock gravityblock is offline
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Quote:
Originally Posted by Mark View Post
The lights DON'T stay on till midnight, they only work when the sun is out.
Quote:
Originally Posted by Iotayodi View Post
Then the midnight statement is completely misleading.
Who says the sun is never out at midnight? The midnight statement isn't misleading. The sun can be out at midnight in certain locations of the world, which is known as the Midnight Sun. Lands of the Midnight Sun includes Alaska, Canada (Yukon, Northwest Territories, and Nunavut), Finland, Iceland, Lapland, Norway, Russia, Sweden, Denmark (Greenland). Also, there are some instances which are sometimes referred to as "midnight sun", even though they are in reality due to meandering time zones and the observance of daylight saving time.

GB
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Last edited by gravityblock; 05-08-2011 at 01:13 AM.
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