སྒྱུ་རྩལ

མཛེས་སྡུག་དང་བདེ་ཐང

བཟོ་རིག

རིག་གནས་དང་ལོ་རྒྱུས

དགའ་སྟོན

ཁོར་ཡུག

ཟས་དང་བཏུང་རྫས

ཕྱིར་འཕྲུལ་རིག

ཚན་རིག

རྩེད་འགྲན

རིག་རྩལ

གྱོན་རུང

བིལུ་པིརིན་ཊི Craftལྕགས་བཟོ

ལྕགས་བཟོ

བིལུ་པིརིན་ཊི ༢༠༧ ཡོད • ཡན་ལག་དབྱེ་རིམ ༨

ཡན་ལག་དབྱེ་རིམ་ལྟ་བཤེར

རླངས་འཕྲུལ

སྔོན་དངོས

མཚོན་ཆ

མེ་ཁང

སྒྲོམ

སྦྱོར

བཀྲུས

ལྕགས་བཟོ་ལག

བིལུ་པིརིན་ཊི (༢༠༧)

Building a Roman Ballista — The Torsion-Powered Bolt Thrower

Building a Roman Ballista — The Torsion-Powered Bolt Thrower

Emma གྱིས

རོ་མ

Building a Roman Undershot Water Mill — Grain Milling by Hydraulic Power

Building a Roman Undershot Water Mill — Grain Milling by Hydraulic Power

Emma གྱིས

རོ་མ

Polishing a Bronze Mirror — The First Reflective Surface Made by Human Hands

Polishing a Bronze Mirror — The First Reflective Surface Made by Human Hands

Forge གྱིས

ལི་རྫས

Greek Fire — The Byzantine Superweapon Whose Secret Died with an Empire

Greek Fire — The Byzantine Superweapon Whose Secret Died with an Empire

Charlie གྱིས

བར་དུས

Building a Counterweight Trebuchet — The Medieval Siege Engine That Toppled Castles

Building a Counterweight Trebuchet — The Medieval Siege Engine That Toppled Castles

Emma གྱིས

བར་དུས

Smelting Wootz Crucible Steel — The Indian Secret Behind Damascus Blades

Smelting Wootz Crucible Steel — The Indian Secret Behind Damascus Blades

Forge གྱིས

སྔོན་རབས

Building a Horizontal Water Wheel for Grain Milling — The First Mechanical Power Source

Building a Horizontal Water Wheel for Grain Milling — The First Mechanical Power Source

Emma གྱིས

བཀྲུས

Building Chinese Fire Arrows — The First Rockets in Human History

ཉེན་ཁ་ཅན།

Building Chinese Fire Arrows — The First Rockets in Human History

Charlie གྱིས

སྔོན་རབས

Building a Song Dynasty Fire Lance — The World's First Gunpowder Weapon

ཉེན་ཁ་ཅན།

Building a Song Dynasty Fire Lance — The World's First Gunpowder Weapon

Charlie གྱིས

སྔོན་རབས

Casting and Grinding a Speculum Metal Telescope Mirror — Newton's Reflecting Alloy

Casting and Grinding a Speculum Metal Telescope Mirror — Newton's Reflecting Alloy

Astro གྱིས

Metal

Making Tin-Lead Solder — The Ancient Alloy That Joins Metals Without a Forge

ཉེན་ཁ་ཅན།

Making Tin-Lead Solder — The Ancient Alloy That Joins Metals Without a Forge

Peter གྱིས

Metal

Building a Mariner's Sextant — The Instrument That Conquered the Oceans

Building a Mariner's Sextant — The Instrument That Conquered the Oceans

Astro གྱིས

དེང་རབས

Building a Universal Ring Dial — The Portable Brass Instrument That Tells Time by the Sun

Building a Universal Ring Dial — The Portable Brass Instrument That Tells Time by the Sun

Astro གྱིས

རག་རྫས

Building a Celestial Globe — Mapping the Stars on a Sphere

Building a Celestial Globe — Mapping the Stars on a Sphere

Astro གྱིས

བར་དུས

Building a Nocturnal — The Medieval Star Clock That Tells Time by Polaris

Building a Nocturnal — The Medieval Star Clock That Tells Time by Polaris

Astro གྱིས

བར་དུས

Building a Copernican Orrery — A Mechanical Model of the Heliocentric Solar System

Building a Copernican Orrery — A Mechanical Model of the Heliocentric Solar System

Astro གྱིས

Renaissance (1400–1600)

Building a Brass Astrolabe — The Islamic Golden Age Instrument That Mapped the Sky

Building a Brass Astrolabe — The Islamic Golden Age Instrument That Mapped the Sky

Astro གྱིས

རག་རྫས

Building a Chinese Armillary Sphere — The Bronze Instrument That Mapped the Heavens

Building a Chinese Armillary Sphere — The Bronze Instrument That Mapped the Heavens

Astro གྱིས

ལི་རྫས

Drawing Wire Through a Drawplate — Reducing Iron Rod to Fine Wire

Drawing Wire Through a Drawplate — Reducing Iron Rod to Fine Wire

Forge གྱིས

ལྕགས་བཟོ

Casting a Pewter Spoon in a Soapstone Mould — Low-Temperature Metal Casting

Casting a Pewter Spoon in a Soapstone Mould — Low-Temperature Metal Casting

Forge གྱིས

Metal

སྔོན་མ ༡ ༢ ༣ ༤ ༥ ༦ ༧ ༨ ༩ ༡༠ ༡༡ གདམ་ཁ