November 20, 2013 How I did the linkage for my big Stirling engine. November 4, 2011 Detailed video tour of the owner-installed Enerworks solar thermal/hot water system. October 24, 2011 Nuclear fusion including quantum tunnelling - and a new video. August 26, 2011 Video explaining nuclear fusion in the sun and how it gives us solar energy. April 2, 2012 The fun with crystal radios that I've had over the years - including my how-to-make video. December 2, 2012 New page all about crystal earpieces for crystal radios, including homemade. straw bag , 2013 Step-by-step video on how to make a Kelvin water dropper, including troubleshooting. February 9, 2014 The mysterious ball bearing motor - how to make one and how it works. December 7, 2014 How to make a pinhole camera for viewing the sun or just having fun. December 12, 2011 New solar cooking recipe section, starting with no-knead bread and pizza crust. April 23, 2012 Detailed introduction to solar cooking.
April 30, 2012 Taught my first solar cooking class - course handout, tips and photos are here. Draw the same picture on another piece of paper, or make a photocopy of your first drawing. Discoveries of crude jewelry made from bone, teeth and stone date back to prehistoric times, and the first signs of copper jewelry (the first metal used by man) began to appear thousands of years ago, during the 8th century B.C. After providing such information to our Customer Service team and the problem is acknowledged, you can send the items back to us for a repair. There are hundreds of different styles, methods, and designs you can incorporate - and of course, scarecrows make cool-looking lawn ornaments in the fall, too! June 18, 2012 Copenhagen solar cooker - A good solar cooker that's easy to make or inexpensive to buy. October 25, 2014 Added the Copenhagen solar cooker to the solar cooker comparison page. October 16, 2013 An easy to make laser - TEA laser. March 30, 2012 How to make a solar cell using a power transistor. May 5, 2013 How to make a diode using a razor blade and a pencil for use with a crystal radio.
June 29, 2013 How to power a Compact Fluorescent Light (CFL) using a joule thief circuit and AA batteries! June 8, 2012 The joule thief - getting power from dead batteries. January 30, 2012 Details about amp hour meters for solar power systems. June 22, 2013 Many more "how it's made" details added for the 555 timer chip music player. May 19, 2014 Lots more details added to the multiplier section of the how-to-make 30kV power supply page. April 23, 2013 New section - Science and Electronics Projects! January 1, 2015 Added a transistor protection section to the 30kV high voltage power supply page. December 10, 2012 Large, enclosed solar panel made of transistor solar cells. November 17, 2012 Tips for weatherproofing transistor solar panel. June 1, 2014 Added details and example about solar panel specifications. June 22, 2014 Made a nitinol wire/shape memory alloy inchworm that walks! November 22, 2014 Measuring solar panel's open circuit voltage and short circuit current.
May 22, 2012 Solar city Ottawa - a sample of the many different types of systems in our northern city. Cut up different types of fruits and vegetables into shapes. March 9, 2012 New step-by-step construction video for a lifter (non-conventional propulsion). December 8, 2013 Added ion propulsion to a Star Trek Enterprise model! December 13, 2014 Added a test for the effect on water conductivity on the Kelvin water dropper. December 19, 2011 New solar cooker - the Modified CooKit solar cooker! CooKit solar cooker that was used. They have been through so much (tosses and turns in my bag, travel, etc.) and still look good as new! Available in a beautiful wood grain look this amazing diffuser will becoming part of your home decor. Various kitchen tools and utensils made of teak wood. Great for turning smaller branches into wood chips for the garden. Great for Sangria or your fresh water. Plastic has many benefits-it has allowed us to prevent heart attacks (stents that open up arteries are often made of plastic) and provide water to people in need. Enerworks solar thermal/hot water system. June 13, 2012 DIY solar pool heating system in Sardinia, Italy.