Kennewick firm enters solar water heater market
KENNEWICK — A Kennewick business is offering its own line of lower-cost solar hot water heaters tha
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Solar Heat & Thermodynamics, Pt. 2 [Built on Facts]
Before we get to the heart of yesterday’s quiz , let me briefly define solid angle for those who may not be familiar with it. Regular angles are measured in degrees or radians, and solid angles are to angles as square meters are to meters. Solid angle is more or less angular area, and is measured in steradians (or sometimes square degrees). Here’s one steradian, from Wikipedia. There are 4π …
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Seaworthy and solar-powered
The Elektronemo craft draws its power from two suitcase-size electric motors. A Prague tour-boat company has ventured into uncharted waters with the Czech Republic’s only solar-powered boat, one of the first small-scale projects to profit from green energy.
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