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་ཊིརིག་གནས་དང་ལོ་རྒྱུས

རིག་གནས་དང་ལོ་རྒྱུས

བིལུ་པིརིན་ཊི ༢,༣༢༥ ཡོད • ཡན་ལག་དབྱེ་རིམ ༣

བིལུ་པིརིན་ཊི (༢,༣༢༥)

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 གྱིསIS

Renaissance (1400–1600)

༧༥
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Building an Arab Kamal — The Indian Ocean Navigator's Latitude Finder

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

Astro གྱིསIS

བར་དུས

༧༤
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མར་ཁེཏ་ (merkhet) བཟོ་ནི་ — བྱང་ཕྱོགས་ངོ་མ་ འཚོལ་ནིའི་དོན་ལུ་ སྐར་མའི་ བརྒལ་ལམ་ བལྟ་བའི་ ཨི་ཇིཔཊ་གི་ ལག་ཆས་

མར་ཁེཏ་ (merkhet) བཟོ་ནི་ — བྱང་ཕྱོགས་ངོ་མ་ འཚོལ་ནིའི་དོན་ལུ་ སྐར་མའི་ བརྒལ་ལམ་ བལྟ་བའི་ ཨི་ཇིཔཊ་གི་ ལག་ཆས་

Astro གྱིསIS

ཨི་ཇིབ

༢༤༩
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Building a Camera Obscura — Projecting the Sun and Eclipses Safely

Building a Camera Obscura — Projecting the Sun and Eclipses Safely

Astro གྱིསIS

སྔོན་རབས

༨༥༩
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Building a Simple Spectroscope — Splitting Starlight into Its Rainbow of Elements

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

Astro གྱིསIS

སྐར་ཚན་རིག

༥༥
༠
༠
༠
༠
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Building a Newtonian Reflecting Telescope — Mirrors Instead of Lenses

Building a Newtonian Reflecting Telescope — Mirrors Instead of Lenses

Astro གྱིསIS

Renaissance (1400–1600)

༡༠༥
༡
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༢
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Building a Celestial Globe — Mapping the Stars on a Sphere

Building a Celestial Globe — Mapping the Stars on a Sphere

Astro གྱིསIS

བར་དུས

༥༧
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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 གྱིསIS

བར་དུས

༦༢
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Using a Viking Sunstone — Navigating by Polarized Skylight with Iceland Spar

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

Astro གྱིསIS

ཝཱི་ཀིང

༦༩
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Preparing a Viking Sunstone — Selecting and Cleaving Optical Calcite for Navigation

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

Astro གྱིསIS

ཝཱི་ཀིང

༦༥
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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 གྱིསIS

Renaissance (1400–1600)

༨༡
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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 གྱིསIS

Renaissance (1400–1600)

༧༡
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༤
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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 གྱིསIS

Renaissance (1400–1600)

༨༤
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Building a Cross-Staff — The Medieval Navigator's Angle-Measuring Instrument

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

Astro གྱིསIS

བར་དུས

༡༠༧
༠
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༦
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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 གྱིསIS

སྔོན་རབས

༩༡
༠
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༧
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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 གྱིསIS

སྔོན་རབས

༡༠༡
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༣
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Warping a Treadle Loom — Measuring, Beaming, and Threading Warp for Broadcloth

Warping a Treadle Loom — Measuring, Beaming, and Threading Warp for Broadcloth

Tex གྱིསFO

བར་དུས

༤༢
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Burling and Mending Woven Cloth — Cleaning and Repairing Fabric Before Fulling

Burling and Mending Woven Cloth — Cleaning and Repairing Fabric Before Fulling

Tex གྱིསFO

བར་དུས

༧༡
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Pressing Broadcloth in a Screw Press — Hot and Cold Finishing for Lustre

Pressing Broadcloth in a Screw Press — Hot and Cold Finishing for Lustre

Tex གྱིསFO

བར་དུས

༣༩
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Raising the Nap and Shearing Woolen Cloth — Teasel Napping and Cropping Shears

Raising the Nap and Shearing Woolen Cloth — Teasel Napping and Cropping Shears

Tex གྱིསFO

བར་དུས

༧༥
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Tentering Cloth on a Frame — Stretching Fulled Wool to Set Width and Grain

Tentering Cloth on a Frame — Stretching Fulled Wool to Set Width and Grain

Tex གྱིསFO

བར་དུས

༧༥
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Drawing Wire Through a Drawplate — Reducing Iron Rod to Fine Wire

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

Forge གྱིསNO

ལྕགས་བཟོ

༥༥
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༤
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Carving and Printing a Woodblock — Relief Printing on Paper

Carving and Printing a Woodblock — Relief Printing on Paper

Woody གྱིསNO

ཤོག་བཟོ་རིག

༥༢
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Making Tallow Candles by Repeated Dipping — The Chandler's Craft

Making Tallow Candles by Repeated Dipping — The Chandler's Craft

YourGrandma གྱིསIS

བར་དུས

༤༨
༡
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2325 ནང་ལས་ 24 སྟོན་དོ།