The magnetic compass is an old Chinese invention, probably first made in China during the Qin dynasty (221-206 B.C.). Chinese fortune tellers used lodestones (a mineral composed of an iron oxide which aligns itself in a north-south direction) to construct their fortune telling boards.
Guide to Pennsylvania weather in April. The average maximum daytime temperature in Pennsylvania in April is a comfortable 17Â°C (63Â°F). The average night-time temperature is usually a cold 5Â°C (41Â°F). There are usually 7 hours of bright sunshine each day, which represents 55% of the 13 hours of daylight. Expect 95mm (3.7 inches) of rainfall across the whole of April with 11 days with some rain falling.
Hartstown, PA Weather. The average temperature of Hartstown is 47.85Â°F, which is lower than the Pennsylvania average temperature of 49.80Â°F and is much lower than the national average temperature of 54.45Â°F. Topics: Heating Cost Index Cooling Cost Index Historical Temperature Historical Precipitation Historical Snow Historical Humidity Historical Wind Speed