Glassic Gifts® Newton Gravity Sand Timer (8" Tall with 2 Minute Timer)

Demonstrating gravitational effect and buoyancy, these 'floating“ sand timers are one of a kind. When you flip the high quality glass timer over, the hourglass within the liquid-filled cylinder moves upward while the colored sand within it falls. Available in 3 timer lengths with corresponding sizes. Sir Issac Newton (1642  1727) was an English physicist and mathematician who is widely regarded as one of the most influential scientists of all time. He is credited with helping create Infinitesimal calculus and his contributions to optics technology are profound. Known for the 'apple falling from a tree“ story, he is often referred to as the 'Father of Gravity“. His laws of motion and universal gravitation inspired the creation of the 'Gravity Sand Timer“.