What Is The Pythagorean Theorem?
Mathematics / Geometry
Pythagoras was a famous Greek mathematician. He was particularly interested in the properties of triangles, and discovered a simple, fundamental relationship between the lengths of the sides of right continue reading this fact

How To Calculate The Volume Of A Right Cone
Mathematics / Geometry
Cones are used every day for a variety of purposes. Perhaps the most useful application of the cone shape is as a funnel. For finding the volume, a cone is best viewed as a stack of circles, each one continue reading this fact

Unit Of Luminous Intensity (candela)
Mathematics / History
Originally, each country had its own, and rather poorly reproducible, unit of luminous intensity; it was necessary to wait until 1909 to see a beginning of unification on the international level, when continue reading this fact
