སྒྱུ་རྩལ

མཛེས་སྡུག་དང་བདེ་ཐང

བཟོ་རིག

རིག་གནས་དང་ལོ་རྒྱུས

དགའ་སྟོན

ཁོར་ཡུག

ཟས་དང་བཏུང་རྫས

ལྗང་མ་འཇོར་ལུགས

ཕྱིར་འཕྲུལ་རིག

ཚན་རིག

རྩེད་འགྲན

རིག་རྩལ

གྱོན་རུང

བིལུ་པིརིན་ཊིSciences

ཚན་རིག

བིལུ་པིརིན་ཊི ༢༧༨ ཡོད • ཡན་ལག་དབྱེ་རིམ ༨

ཡན་ལག་དབྱེ་རིམ་ལྟ་བཤེར

ཞིང་ལས

གནའ་དངོས་རིག

སྐར་ཚན་རིག

སྲོག་རིག

རྫས་རིག

དངོས་ཁམས་རིག

སྨན

Geology

བིལུ་པིརིན་ཊི (༢༧༨)

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

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

Astro གྱིས

རྒྱ་མཚོ

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

སྐར་ཚན་རིག

Building an Arab Kamal — The Indian Ocean Navigator's Latitude Finder

Building an Arab Kamal — The Indian Ocean Navigator's Latitude Finder

Astro གྱིས

རྙིང་མཐོང་སྐར་ཚན་རིག

Building a Merkhet — The Egyptian Star Transit Instrument for Finding True North

Building a Merkhet — The Egyptian Star Transit Instrument for Finding True North

Astro གྱིས

བར་སྣང

Building a Camera Obscura — Projecting the Sun and Eclipses Safely

Building a Camera Obscura — Projecting the Sun and Eclipses Safely

Astro གྱིས

བར་སྣང

Building a Simple Spectroscope — Splitting Starlight into Its Rainbow of Elements

Building a Simple Spectroscope — Splitting Starlight into Its Rainbow of Elements

Astro གྱིས

སྔོན་རབས

Building a Newtonian Reflecting Telescope — Mirrors Instead of Lenses

Building a Newtonian Reflecting Telescope — Mirrors Instead of Lenses

Astro གྱིས

བར་སྣང

Building a Celestial Globe — Mapping the Stars on a Sphere

Building a Celestial Globe — Mapping the Stars on a Sphere

Astro གྱིས

ལྕགས་བཟོ

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

Using a Viking Sunstone — Navigating by Polarized Skylight with Iceland Spar

Using a Viking Sunstone — Navigating by Polarized Skylight with Iceland Spar

Astro གྱིས

སྐར་ཚན་རིག

Preparing a Viking Sunstone — Selecting and Cleaving Optical Calcite for Navigation

Preparing a Viking Sunstone — Selecting and Cleaving Optical Calcite for Navigation

Astro གྱིས

རྙིང་མཐོང་སྐར་ཚན་རིག

Building a Mural Quadrant — The Wall-Mounted Instrument for Precise Star Positions

Building a Mural Quadrant — The Wall-Mounted Instrument for Precise Star Positions

Astro གྱིས

རྙིང་མཐོང་སྐར་ཚན་རིག

Building a Galilean Telescope — The Instrument That Changed Our View of the Universe

Building a Galilean Telescope — The Instrument That Changed Our View of the Universe

Astro གྱིས

བར་སྣང

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 Cross-Staff — The Medieval Navigator's Angle-Measuring Instrument

Building a Cross-Staff — The Medieval Navigator's Angle-Measuring Instrument

Astro གྱིས

སྐར་ཚན་རིག

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

རྒྱ་མཚོ

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

ལྕགས་བཟོ

Striking Fire with Flint and Steel — The Iron Age Upgrade to Fire Starting

Striking Fire with Flint and Steel — The Iron Age Upgrade to Fire Starting

Forge གྱིས

མེ་སྲེག

Making a Stone Hoe — The First Agricultural Tool

Making a Stone Hoe — The First Agricultural Tool

Mary གྱིས

ཞིང་ལས

Making Bakelite — The First Fully Synthetic Plastic That Launched the Age of Polymers

ཉེན་ཁ་ཅན་ནང་དོན

Making Bakelite — The First Fully Synthetic Plastic That Launched the Age of Polymers

Charlie གྱིས

རྫས་རིག

སྔོན་མ ༡ ༢ ༣ ༤ ༥ ༦ ༧ ༨ ༩ ༡༠ ༡༡ ༡༢ ༡༣ ༡༤ གདམ་ཁ