Category Archives: Thinker Thursday

In 1041, a scientist named Pi Sheng came up with an invention that would truly change the world.  For hundreds of years all books that were written had to be written by hand.  Until Pi Sheng.  Sheng created the world’s … Continue reading →

Many people think of Holland or the Netherlands when they think about windmills, but did you know the first practical windmills were built in an area of Persia that is now Iran?  These windmills had horizontal (left to right) sails … Continue reading →

So, how do you tell time?  The first inventions to tell what time of day it was were sundials and shadow clocks, invented by the ancient Babylonians and Egyptians.  The problem?  They only worked during daylight.  The Greeks and Chinese … Continue reading →