The burdei dates back as far as 6000 years and it’s a type of half-dugout shelter somewhat between a sod house and a log cabin, usually with a floor that’s 1 – 1.5 meters under ground level.-SR
this is pretty much exactly how we are builing our retirement home in SC. Only it will be a little deeper but all spaced will be completely open to the windows in the front creating bay-like sections in the home for different rooms. Can. Not. Wait.
Fig. 1: Circuit of solar tracking system
Such a smart idea.
Simple Induction Heater Circuit - Hot Plate Cooker Circuit
Trigonometric Hand Trick This is an easy way to remember the values of common values of trigonometric functions in the first quadrant.
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