Xujiahui Observatory, still in use after 100 years.

Observatory from over 100 years ago Still in use With the most advanced equipment and technology of the time Can accurately predict typhoons and earthquakes Measure gravitational acceleration Instruments still in use Now with satellites and big data Meteorologists are even more powerful Astronomy and seismology have branched out from meteorology Meteorology is mainly about the atmosphere Hygrometers use hair Barometers use vacuum membranes The popular storm bottle is actually a temperature sensor