Who invented time, who invented the clock? Why 1 hour, why 60 minutes, why 60 seconds? Since prehistoric times, man has sought to measure time, to organize social and religious life, to plan food supply... Today we can surf the Internet, geolocate, pay by credit card… All our daily lives depend...
Illustrates principles for measuring distance, mass and time--the basic quantities in physical science. Emphasizes the importance of accuracy. Provides laboratory demonstrations.
