Instructables: exploring - stepbystep - science - green - featured http://www.instructables.com Fri, 22 Aug 2014 13:14:25 PDT BLOX v1.01 Casting a Large, Light-Weight Telescope Mirror from Recycled Glass http://www.instructables.com/id/Casting-a-Large-Light-Weight-Telescope-Mirror-fro/
Casting a Large, Light-Weight Telescope Mirror from Recycled Glass - More DIY How To Projects]]> http://cdn.instructables.com/FPT/P5LI/H2TJ4MD1/FPTP5LIH2TJ4MD1.SQUARE2.jpg http://cdn.instructables.com/FPT/P5LI/H2TJ4MD1/FPTP5LIH2TJ4MD1.SQUARE.jpg http://cdn.instructables.com/FPT/P5LI/H2TJ4MD1/FPTP5LIH2TJ4MD1.SMALL.jpg mdavis19 The first photo below shows a 12.5 inch diameter, 1.5 inch thick, telescope mirror blank, made from recycled glass, that has been lightened by casting the mirror in a mold that made lots of hexagon-shaped pockets in the back of the mirror. This is the story of how I did it. Why light-weight mirror ...
By: mdavis19

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Mon, 4 Jun 2012 16:56:08 PDT
the algae experiment: How to build your own algae photo-bioreactor. http://www.instructables.com/id/the-algae-experiment-How-to-build-your-own-algae-/
the algae experiment: How to build your own algae photo-bioreactor. - More DIY How To Projects]]> http://cdn.instructables.com/FTE/SRT6/GXEZCIDY/FTESRT6GXEZCIDY.SQUARE2.jpg http://cdn.instructables.com/FTE/SRT6/GXEZCIDY/FTESRT6GXEZCIDY.SQUARE.jpg http://cdn.instructables.com/FTE/SRT6/GXEZCIDY/FTESRT6GXEZCIDY.SMALL.jpg m0uch In this instructable we will go over how to construct an at-home version of a photo-bioreactor which will use solar energy and artificial lighting with carbon dioxide to produce algae biomass.The aim of this project is to create an model which harbors an ecosystem fit to help us escape a fossil fuel...
By: m0uch

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Sun, 15 Jan 2012 07:45:57 PST
Pumpkin Battery http://www.instructables.com/id/Pumpkin-Battery/
Pumpkin Battery - More DIY How To Projects]]> http://cdn.instructables.com/FCQ/0NF4/GTV9WJKB/FCQ0NF4GTV9WJKB.SQUARE2.jpg http://cdn.instructables.com/FCQ/0NF4/GTV9WJKB/FCQ0NF4GTV9WJKB.SQUARE.jpg http://cdn.instructables.com/FCQ/0NF4/GTV9WJKB/FCQ0NF4GTV9WJKB.SMALL.jpg emdaniels Here is a fun food hack I did over the weekend that is a useful alternative to lighting jack o' lanterns with candles or traditional batteries on Halloween. It could also double as a center piece for the fall and is easily made with common household items. You'll need miniature pumpkins (I used Bab...
By: emdaniels

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Mon, 17 Oct 2011 07:55:17 PDT
Small NFT Hydroponics System http://www.instructables.com/id/Small-NFT-Hydroponics-System/
Small NFT Hydroponics System - More DIY How To Projects]]> http://cdn.instructables.com/FWE/QDEF/FUI0TC22/FWEQDEFFUI0TC22.SQUARE2.jpg http://cdn.instructables.com/FWE/QDEF/FUI0TC22/FWEQDEFFUI0TC22.SQUARE.jpg http://cdn.instructables.com/FWE/QDEF/FUI0TC22/FWEQDEFFUI0TC22.SMALL.jpg Weissensteinburg Hydroponics is a type of agriculture that uses no dirt, and usually results in larger, fuller plants. I recently became interested in the topic, and decided to start my own vegetable garden using the Nutrient Film Technique (NFT). It involves a channel of nutrient enriched water constantly flowing p...
By: Weissensteinburg

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Sun, 24 May 2009 07:38:03 PDT
Charge Your Cellphone Using Wasted Heat (and Build a Steampunk Wall-E) http://www.instructables.com/id/Charge-Your-Cellphone-Using-Wasted-Heat/
Charge Your Cellphone Using Wasted Heat (and Build a Steampunk Wall-E) - More DIY How To Projects]]> http://cdn.instructables.com/F15/1L2G/FT7PRNPC/F151L2GFT7PRNPC.SQUARE2.jpg http://cdn.instructables.com/F15/1L2G/FT7PRNPC/F151L2GFT7PRNPC.SQUARE.jpg http://cdn.instructables.com/F15/1L2G/FT7PRNPC/F151L2GFT7PRNPC.SMALL.jpg splitreaction We updated the instructable with a new implementation you can build without spending all that money on those expensive seebeck generators. This one uses Peltiers in reverse to generate rather than cool. They aren't as efficient but they are much more affordable. Plus most of the parts required are ...
By: splitreaction

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Wed, 15 Apr 2009 20:51:22 PDT
How To Make A Tesla Turbine (Greenest Turbine) http://www.instructables.com/id/How-To-Make-A-Tesla-Turbine-Greenest-Turbine/
How To Make A Tesla Turbine (Greenest Turbine) - More DIY How To Projects]]> http://cdn.instructables.com/F06/OQC1/FRXW6YGT/F06OQC1FRXW6YGT.SQUARE2.jpg http://cdn.instructables.com/F06/OQC1/FRXW6YGT/F06OQC1FRXW6YGT.SQUARE.jpg http://cdn.instructables.com/F06/OQC1/FRXW6YGT/F06OQC1FRXW6YGT.SMALL.jpg CrazyMachinist94 If you like this instructable please vote for it in the Epilog Challenge coming up. I have spent alot of time and effort trying to make this easy to understand and easy for anyone out there to do. I hope you enjoy and please rate and vote. This Instructable will show you how to c...
By: CrazyMachinist94

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Tue, 10 Mar 2009 17:56:00 PDT
An Algae Bioreactor from Recycled Water Bottles http://www.instructables.com/id/An-Algae-Bioreactor-from-Recycled-Water-Bottles/
An Algae Bioreactor from Recycled Water Bottles - More DIY How To Projects]]> http://cdn.instructables.com/FFN/1QVM/FQMXFIJU/FFN1QVMFQMXFIJU.SQUARE2.jpg http://cdn.instructables.com/FFN/1QVM/FQMXFIJU/FFN1QVMFQMXFIJU.SQUARE.jpg http://cdn.instructables.com/FFN/1QVM/FQMXFIJU/FFN1QVMFQMXFIJU.SMALL.jpg mfischer In this instructable, we describe how to build a photo-bioreactor that uses algae to convert carbon dioxide and sunlight into energy. The energy that is produced is in the form of algae biomass. The photo-bioreactor is built from plastic recycled water bottles. By designing the apparatus to be co...
By: mfischer

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Mon, 2 Feb 2009 16:17:00 PST
Real-time Web Based Household Power Usage Monitor http://www.instructables.com/id/Real-time-Web-Based-Household-Power-Usage-Monitor/
Real-time Web Based Household Power Usage Monitor - More DIY How To Projects]]> http://cdn.instructables.com/FQZ/FJ4I/FPWWWQO0/FQZFJ4IFPWWWQO0.SQUARE2.jpg http://cdn.instructables.com/FQZ/FJ4I/FPWWWQO0/FQZFJ4IFPWWWQO0.SQUARE.jpg http://cdn.instructables.com/FQZ/FJ4I/FPWWWQO0/FQZFJ4IFPWWWQO0.SMALL.jpg jasonT This Instructable details a real-time web based household power usage monitor. The end result is a live chart in a web page that updates every 10 seconds with the instantaneous power usage for my entire house. The electrical current is measured on the main lines entering my home with AC clamps. The ...
By: jasonT

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Tue, 20 Jan 2009 19:06:23 PST
Modular, Windowsill, Air Powered, Hydroponics Herb Garden/Experimenter http://www.instructables.com/id/Modular-Windowsill-Air-Powered-Hydroponics-Herb-Ga/
Modular, Windowsill, Air Powered, Hydroponics Herb Garden/Experimenter - More DIY How To Projects]]> http://cdn.instructables.com/FXK/GP52/FNZA8KB7/FXKGP52FNZA8KB7.SQUARE2.jpg http://cdn.instructables.com/FXK/GP52/FNZA8KB7/FXKGP52FNZA8KB7.SQUARE.jpg http://cdn.instructables.com/FXK/GP52/FNZA8KB7/FXKGP52FNZA8KB7.SMALL.jpg wiley coyote Although this is an evolution of previously entered work, there has been significant changes to the whole modular idea as well as some control mechanisms added.I have learned along the way that the back flow of air through the pump IS definitely a problem, especially when working with air tight syst...
By: wiley coyote

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Thu, 4 Dec 2008 12:12:07 PST