Red sprites, secondary jets and newly discovered green afterglow called "ghosts" triggered by red sprites. A dozen vibrant red sprites were recorded on this evening and only two events had the green afterglow.... continue reading
posted by newtboy
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Red sprites, secondary jets and newly discovered green afterglow called "ghosts" triggered by red sprites. A dozen vibrant red sprites were recorded on this evening and only two events had the green afterglow.... continue reading
posted by newtboyWould college students support a policy that would force those with high GPAs to donate part of their own GPA to help those with lower grades?
posted by bobknight33YouTube description: Until the mid 1950’s, small short-range airliners like the twin engined IL-14 were really the only type the Soviet Union produced. And that meant flying across the country’s... continue reading
posted by Aard VarkAt the old hut site (the new one being temporarily cut off by flooding) I made lime mortar from the shells of rainforest snails by firing them in a kiln, slaking them in water, mixing them into lime putty.... continue reading
posted by MordhausI built a natural draft furnace to test ideas about how hot a furnace could get without the use of bellows. Natural draft is the flow of air through a furnace due to rising hot air. The hot gasses in the... continue reading
posted by MordhausThe Lahti L-39 is a Finnish 20 mm anti-tank rifle used during the Second World War. It had excellent accuracy, penetration and range, but its size made transportation difficult. It was nicknamed "Norsupyssy"... continue reading
posted by MordhausI invented the Bow Blower, a combination of the bow drill and forge blower to make a device that can force air into a fire while being easy to construct from commonly occurring natural materials using... continue reading
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