The Perimeter Of The Earth

Give Me A Place To Stand, And A Lever Long Enough, And I Will Move The World.

Eureka! (i Have Found It!).

The Centre Of Gravity Of Any Parallelogram Lies On The Straight Line Joining The Middle Points Of Opposite Sides.

Having Been The Discoverer Of Many Splendid Things, He Is Said To Have Asked His Friends And Relations That, After His Death, They Should Place On His Tomb A Cylinder Enclosing A Sphere, Writing On It The Proportion Of The Containing Solid To That Which Is Contained.

Eureka, Eureka! (i Found It, I Found It!).