Superior Yesterdays
30 years ago MARQUETTE — A public demonstration of what’s being called the world’s longest pendulum will be offered by the Northern Michigan University Physics Club in the Superior Dome from 8 a.m. to 4 p.m. Wednesday. Fastened at the apex of the dome — itself the largest wooden dome in the world — the pendulum will have a length of about 140 feet with a total maximum mass of about 300 pounds, said Dr. David Lucas, a physics professor and advisor to the physics club. Some of the things measured will be acceleration due to the Earth’s gravity; Earth’s rotation rate; and ...