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maartensteinbuch.com | ||
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www.climateconversation.org.nz
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| | | | | New Zealand's efforts to reduce carbon dioxide emissions can be likened to digging a trench (to dispose of carbon dioxide emissions) while others follow behind filling it in (making our sacrifice futile). | |
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www.pololu.com
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| | | | | My earliest electronics projects and my first robot were powered by regular alkaline batteries, and I didn't think about current or the capacity of those batteries. The batteries were prominently labeled "1.5V", and I was happy in my understanding that putting four in a battery holder got me to 6 volts; when the motors slowed down, it was time for new batteries. When I began designing my second robot, I found some 12V, 1A motors (what a "1-amp motor" might mean is a topic for another post) and promptly wasted many hours dragging parents and teachers to Radio Shack and car parts stores looking for a 12V, 1A battery. | |
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www.thedrive.com
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| | | | | Easy wireless power transfer could reduce anxiety on the part of consumers and utilities alike. | |
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www.21stcenturysciencetech.com
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| | | Yes, the Ocean Has Warmed; No, Its Not Global Warming | ||
