back in the days we could see ppl's durring they sun bating, holding book looking thing below they chin, made out of aluminum foil or other reflecting matterial.to catch some extra tan on thay faceif yes whot is the% aproxis reflecting of it.we have a dispute bout it with my friends.and i said .i have a place where we can find out.thanX.
An English wheel might be OK for a one-of-a-kind type of project, but for large production runs like Airstream campers, the compound-curved shapes are stamped out using dies and large hydraulic pressesIt's the same basic procedure used to make compound curves in car bodys or any other product made from sheet metal.
quehas a great answerVery trure.
A good aluminum mirror coating (on the surface, not behind glass) will reflect about 90% of incoming visible light, and presumably the same for UVA and UVBThat's plenty good enough for tanningAnd cancering.
