Recent content by applied-physics

ooops, .. that is right ... that used to be a science fair project ... indeed a pole can be a sundial, right. I could make a clock. And the angle then will depend upon latitude. 33 south is mine here in Santiago. Many many thanks.

Hi, I am an Electrical Engineer teaching High School Physics for a while, here in Santiago of Chile. Dominating the world ... of science fairs ! Greetings ! (waiting for comet Pons Brooks ...!)

How did you find PF?: via Google search Hi, I wonder if the shade from the sun on the ground, on a sunny day, is it a straight line or a curved line?? and if it is curved, how curvature can be calculated ?? Let´s say I have a pole or building, and I can follow up the shade of its top on the...