Pendulum in Sta. Maria della Salute - The "Salute" church was dedicated to Mary for saving those who survived from the black plague. It's a very light and airy space. The floor is incredibly ornate, but what attracted me was the lamp hanging from the center of the dome, maybe 100 feet up. It’s not hard to imagine an early Renaissance thinker seeing the slow swaying of the lamp and thinking about it's periodicity and sinusoidal motion.