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Jacquie has the answers to all of your Solar-Cooler questions.
Feel free to ask her about product development, custom Solar-Coolers, features, carbon footprint, how to order, and more!
But don't panic — of the 800,000,000,000,000,000,000,000,000 carbon atoms in every one of us, about 800,000,000,000,000 are carbon-14, so we've got a few to spare.
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Chemically, carbon-14 is no different from non-radioactive carbon atoms, so it ends up in all the usual carbon places — one trillionth of the carbon atoms in air, plants, animals and us are radioactive.
But something else is going on that keeps producing new carbon-14 — otherwise it would have all turned to nitrogen millions of years ago.
All radioactive atoms eventually decay into something more stable, and carbon-14 decays into nitrogen.
For a rare event it happens pretty damn often — one million carbon-14 atoms in your body decay into nitrogen every minute!
Everything from the fibres in the Shroud of Turin to Otzi the Iceman has had their birthday determined the carbon-14 way. There's plenty of hydrogen, oxygen and nitrogen in living things too, but carbon's got something none of them do — a radioactive isotope that can take thousands of years to decay.
(You can read up on radioactivity and isotopes here).
Knight, who is known by his middle name Mack, is reportedly a Princeton University graduate after studying ecology and evolutionary biology before attending Columbia Business School in Manhattan.… continue reading »
The book assumes that you have some experience with Arduino and micro-controllers (i.e., do you know what a breadboard, jumper wires, and circuits are? We start with a very brief introduction to RFID, follow up with two introductory technical tutorials on Arduino, and end with a fairly simple home automation project: Between my officemate and me, we have dozens of devices drawing power in our office: two laptops, two monitors, four or five lamps, a few hard drives, a soldering iron, Ethernet hubs, speakers, and so forth.… continue reading »
It was for this reason that in the late middle ages, several European sovereigns issued regulations requiring that all gold and silver artifacts be marked with a unique stamp to identify the maker of the object; a responsibility mark to protect consumers.… continue reading »
Thank you to all the fans and supporters for your endless love, and for making such big dreams come true." — Wendy Melvoin and Lisa Coleman, former members of Prince and the Revolution."Lots of big stars have made waves nationally and internationally, but Prince by far was the most groundbreaking more than anyone ...… continue reading »