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 ༡,༤༥༥ ཡོད • ཡན་ལག་དབྱེ་རིམ ༣

བིལུ་པིརིན་ཊི (༡,༤༥༥)

Building a Figure-4 Deadfall Trap — Stone Weight Trigger Mechanism

Building a Figure-4 Deadfall Trap — Stone Weight Trigger Mechanism

Bob གྱིསBE

སྔོན་ལོ

༢༨
Setting a Simple Snare Trap on a Game Trail — Cordage Loop Hunting

Setting a Simple Snare Trap on a Game Trail — Cordage Loop Hunting

Bob གྱིསBE

སྔོན་ལོ

༣༣
Drying Medicinal Herbs for Winter Storage — Preserving Nature's Pharmacy

Drying Medicinal Herbs for Winter Storage — Preserving Nature's Pharmacy

Bob གྱིསBE

Storage

༣༠
Preparing a Yarrow Wound Poultice — Prehistoric Herbal First Aid

Preparing a Yarrow Wound Poultice — Prehistoric Herbal First Aid

Bob གྱིསBE

སྔོན་ལོ

༣༡
Building a Coil Pot by Hand — Ancient Pottery Without a Wheel

Building a Coil Pot by Hand — Ancient Pottery Without a Wheel

Clay གྱིསDK

སྔོན་ལོ

༣༢
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

༡༣༢
Understanding Whale Oil from Blubber Rendering — The Fuel That Lit the World Before Petroleum

Understanding Whale Oil from Blubber Rendering — The Fuel That Lit the World Before Petroleum

Bob གྱིསBE

སྲོག་རིག

༢༨
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
Understanding Protactinium from Uranium Ore — The Elusive Parent of Actinium

Understanding Protactinium from Uranium Ore — The Elusive Parent of Actinium

Peter གྱིསSE

རྫས་རིག

༢༥
Understanding Actinium from Uranium Ore — The Element That Named the Actinides

Understanding Actinium from Uranium Ore — The Element That Named the Actinides

Peter གྱིསSE

རྫས་རིག

༢༤
Understanding Radium from Uranium Ore — The Glowing Element That Changed Science and Medicine

Understanding Radium from Uranium Ore — The Glowing Element That Changed Science and Medicine

Peter གྱིསSE

རྫས་རིག

༢༧
Understanding Francium from Radioactive Decay — The Most Unstable Natural Element

Understanding Francium from Radioactive Decay — The Most Unstable Natural Element

Peter གྱིསSE

རྫས་རིག

༤༧
Understanding Radon from Radioactive Decay — The Invisible Killer in Your Basement

Understanding Radon from Radioactive Decay — The Invisible Killer in Your Basement

Peter གྱིསSE

རྫས་རིག

༢༠
Understanding Astatine from Cyclotron Synthesis — The Rarest Naturally Occurring Element

Understanding Astatine from Cyclotron Synthesis — The Rarest Naturally Occurring Element

Peter གྱིསSE

རྫས་རིག

༣༤
Understanding Polonium from Uranium Ore — The Deadly Discovery That Launched Nuclear Science
ཉེན་ཁ་ཅན།

Understanding Polonium from Uranium Ore — The Deadly Discovery That Launched Nuclear Science

Peter གྱིསSE

རྡུལ་ནུས

༣༢
Understanding Promethium from Nuclear Fission — The Phantom Lanthanide

Understanding Promethium from Nuclear Fission — The Phantom Lanthanide

Peter གྱིསSE

རྡུལ་ནུས

༣༣
Understanding Technetium from Nuclear Fission — The First Artificially Made Element

Understanding Technetium from Nuclear Fission — The First Artificially Made Element

Peter གྱིསSE

རྡུལ་ནུས

༢༠
Understanding Xenon from Air Separation — The Strangest Noble Gas

Understanding Xenon from Air Separation — The Strangest Noble Gas

Peter གྱིསSE

རྫས་རིག

༢༩
Understanding Krypton from Air Separation — The Hidden Gas That Once Defined the Meter

Understanding Krypton from Air Separation — The Hidden Gas That Once Defined the Meter

Peter གྱིསSE

རྫས་རིག

༣༡
Understanding Argon from Air Separation — The Invisible Shield Gas

Understanding Argon from Air Separation — The Invisible Shield Gas

Peter གྱིསSE

རྫས་རིག

༢༣