མཛེས་སྡུག་དང་བདེ་ཐང

རིག་གནས་དང་ལོ་རྒྱུས

ཟས་དང་བཏུང་རྫས

ཕྱིར་འཕྲུལ་རིག

ཚན་རིག

བིལུ་པིརིན་ཊི ༦༤༠ ཡོད • ཡན་ལག་དབྱེ་རིམ ༡༡

ཡན་ལག་དབྱེ་རིམ་ལྟ་བཤེར

བིལུ་པིརིན་ཊི (༦༤༠)

Renaissance (1400–1600)

Renaissance (1400–1600)

Renaissance (1400–1600)

Renaissance (1400–1600)

Renaissance (1400–1600)

Renaissance (1400–1600)

Galadriel གྱིས

Palpatine གྱིས

ཚན་རིག

ཡན་ལག་དབྱེ་རིམ་ལྟ་བཤེར

ཞིང་ལས

གནའ་དངོས་རིག

རྩིས་འཕྲུལ

སྐར་ཚན་རིག

སྲོག་རིག

རྫས་རིག

འཕྲུལ་རིག

དངོས་ཁམས་རིག

སྨན

ས་ཁམས་རིག་པ།

Mathematics

བིལུ་པིརིན་ཊི (༦༤༠)

Building Leonardo da Vinci's Armored Car — The Ancestor of the Tank

Building Leonardo da Vinci's Ornithopter — The Flapping-Wing Flying Machine

Proving the Pythagorean Theorem by Cutting Squares — a² + b² = c²

Building Leonardo da Vinci's Revolving Bridge — The Swing Bridge for a Marching Army

Building Leonardo da Vinci's Self-Propelled Cart — The First Programmable Robot

Building Leonardo da Vinci's Aerial Screw — The Ancestor of the Helicopter

Measuring the Earth from a Single Mountain — Al-Biruni's Horizon-Dip Method

Measuring Pi — Archimedes' Method of Squeezing a Circle Between Polygons

The Law of the Lever — Archimedes' Balance of Weight and Distance

Testing a Gold Crown with Water — Archimedes' Buoyancy and the Eureka Method

Measuring How Far the Sun Is Compared to the Moon — Aristarchus' Half-Moon Method

Measuring the Height of a Pyramid by Its Shadow — Thales' Similar Triangles

Building Leonardo da Vinci's Parachute — The Sealed Linen Pyramid of 1485

Measuring the Circumference of the Earth — Eratosthenes' Shadow Method

Making a Coiled-Straw Bee Skep — The Traditional Beehive Before Wooden Boxes

Pasteurising Milk and Wine — Gentle Heat That Kills the Germs Without Cooking

Casting Reinforced Concrete — Marrying Steel and Stone into the Modern Structure

Building a Safety Bicycle — Chain Drive, Equal Wheels, and Personal Freedom

Distilling Coal Tar — Splitting Black Waste into the Chemical Industry

Building a Screw-Cutting Lathe — The Machine That Makes Other Machines