Ask the Chatbot Games & Quizzes ProCon History & Society Science & Tech Biographies Animals & Nature Geography & Travel Arts & Culture Money Videos
Metrica
Directory
References
Discover
Lusitania sinking, illustration from The War of the Nations (New York), December 31, 1919. World War I, WWI. This image is one of three on the page. (See source file for the other two.)
7 of the World’s Deadliest Shipwrecks
The tomb of Saint Nicholas in the crypt of the Basilica di San Nicola, Bari, Apulia, Italy
Do the Relics of Saint Nicholas Really Emit a Holy Substance?
Ruminant. Deer. Red deer. Cervus elaphus. Buck. Stag. Antlers.
9 of the World’s Deadliest Mammals
Chinese dragon sculpture or statue.
10 Legendary Creatures from Around the World
illustration of the walking titanosaurus, Patagotitan mayorum
Titanosaurs: 8 of the World's Biggest Dinosaurs
Cheetah (Acinonyx jubatus) standing on rock, side view, Masai Mara National Reserve, Kenya
The Fastest Animals on Earth
Nativity Scene, Adoration of the Magi, Church of the Birth of the Virgin Mary, Montenegro
Why Is Christmas in December?

Metrica

book by Heron of Alexandria

Learn about this topic in these articles:

discussed in biography

  • In Heron of Alexandria

    Heron’s most important geometric work, Metrica, was lost until 1896. It is a compendium, in three books, of geometric rules and formulas that Heron gathered from a variety of sources, some of them going back to ancient Babylon, on areas and volumes of plane and solid figures. Book I enumerates…

    Read More