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

རིག་རྩལ

བིལུ་པིརིན་ཊི ༤༡༦ ཡོད • ཡན་ལག་དབྱེ་རིམ ༨

བིལུ་པིརིན་ཊི (༤༡༦)

Building a Roman Ballista — The Torsion-Powered Bolt Thrower

Building a Roman Ballista — The Torsion-Powered Bolt Thrower

Emma གྱིསSE

རོ་མ

༧༧
Designing a Roman Bathhouse (Thermae) — The Engineering of Public Bathing

Designing a Roman Bathhouse (Thermae) — The Engineering of Public Bathing

Emma གྱིསSE

རོ་མ

༣༠
Building a Roman Stone Arch Bridge — Spanning Rivers with Voussoirs and Cofferdams

Building a Roman Stone Arch Bridge — Spanning Rivers with Voussoirs and Cofferdams

Emma གྱིསSE

རོ་མ

༣༣
Building a Roman Cofferdam — Pumping Water to Build Below the Waterline

Building a Roman Cofferdam — Pumping Water to Build Below the Waterline

Emma གྱིསSE

རོ་མ

༢༩
Building a Roman Concrete Dome — The Unreinforced Vault That Crowned the Pantheon

Building a Roman Concrete Dome — The Unreinforced Vault That Crowned the Pantheon

Emma གྱིསSE

རོ་མ

༤༤
Building a Roman Sewer (Cloaca) — Underground Drainage That Made Cities Liveable

Building a Roman Sewer (Cloaca) — Underground Drainage That Made Cities Liveable

Emma གྱིསSE

རོ་མ

༢༩
Building a Roman Undershot Water Mill — Grain Milling by Hydraulic Power

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

Emma གྱིསSE

རོ་མ

༣༤
Building a Roman Road (Via Strata) — The Layered Highway That Connected an Empire

Building a Roman Road (Via Strata) — The Layered Highway That Connected an Empire

Emma གྱིསSE

བཟོ་སྐྲུན

༣༡
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 གྱིསSE

བཀྲུས

༢༧
ཁྱེད་ཀྱི་དང་པོའི་བོུད་སྲིང་གི་ཕྲེང་མཐེབ། — སྲིད་གཞིས་ཀྱི་ལས་རིས།

ཁྱེད་ཀྱི་དང་པོའི་བོུད་སྲིང་གི་ཕྲེང་མཐེབ། — སྲིད་གཞིས་ཀྱི་ལས་རིས།

Woody གྱིསNO

སྐོར

༥༡
Turning a Bowl on a Pole Lathe — Foot-Powered Green Wood Turning

Turning a Bowl on a Pole Lathe — Foot-Powered Green Wood Turning

Woody གྱིསNO

སྐོར

༢༩
Building a Wattle-and-Daub Wall — The Universal Prehistoric Construction Technique

Building a Wattle-and-Daub Wall — The Universal Prehistoric Construction Technique

Woody གྱིསNO

སྔོན་ལོ

༤༣
Making a Bull-Roarer — Whirling Sound Instrument

Making a Bull-Roarer — Whirling Sound Instrument

Woody གྱིསNO

སྒྲ

༢༩
Making Sulfuric Acid by the Lead Chamber Process — The Acid That Built the Industrial Revolution
ཉེན་ཁ་ཅན།

Making Sulfuric Acid by the Lead Chamber Process — The Acid That Built the Industrial Revolution

Charlie གྱིསDE

བཟོ་གྲྭ

༣༨
Making Lithopone — The Co-Precipitated White Pigment of the Industrial Age
ཉེན་ཁ་ཅན།

Making Lithopone — The Co-Precipitated White Pigment of the Industrial Age

Charlie གྱིསDE

བཟོ་གྲྭ

༣༢
Dyeing Red-Brown with Quebracho — The Industrial Tannin of South American Hardwood

Dyeing Red-Brown with Quebracho — The Industrial Tannin of South American Hardwood

Tex གྱིསFO

བཟོ་གྲྭ

༣༣
Synthetic Indigo — BASF's Industrial Synthesis That Replaced a Global Crop
ཉེན་ཁ་ཅན།

Synthetic Indigo — BASF's Industrial Synthesis That Replaced a Global Crop

Tex གྱིསFO

Industry 2.0 — Electricity, Steel & Oil (1870)

༥༦
Whitney's Cotton Gin — Separating Seed from Fiber at Industrial Scale

Whitney's Cotton Gin — Separating Seed from Fiber at Industrial Scale

Tex གྱིསFO

རིན་སྲན

༡༧
མེད་དུས་པའི་ཕོ་ལ་ལེ་ཐ་ཙོ་སོ་དང་རྒྱུ་གེགས་ཀྱི་རིལ་སོ།

མེད་དུས་པའི་ཕོ་ལ་ལེ་ཐ་ཙོ་སོ་དང་རྒྱུ་གེགས་ཀྱི་རིལ་སོ།

Woody གྱིསNO

སྐོར

༡༣༡
Understanding Sodium from Halite — The Reactive Metal That Powers Life and Industry

Understanding Sodium from Halite — The Reactive Metal That Powers Life and Industry

Peter གྱིསSE

རྫས་རིག

༢༤