कला
सुन्दरता र कल्याण
हस्तकला
संस्कृति र इतिहास
मनोरञ्जन
वातावरण
खाना र पेय
हरित भविष्य
रिभर्स इन्जिनियरिङ
विज्ञान
खेलकुद
प्रविधि
पहिर्न मिल्ने

वातावरण

२१६ ब्लुप्रिन्टहरू उपलब्ध • ३ उपश्रेणीहरू

उपश्रेणीहरू हेर्नुहोस्

ब्लुप्रिन्टहरू (२१६)

Making a Hammerstone — The First Tool in Human History

Making a Hammerstone — The First Tool in Human History

Mary द्वाराFI

जङ्गल

१८
Extracting Tyrian Purple from Murex Snails — The Most Precious Colour of Antiquity
Hazardous content

Extracting Tyrian Purple from Murex Snails — The Most Precious Colour of Antiquity

Charlie द्वाराDE

कला

२१
Making Sepia Ink from Cuttlefish — The Natural Brown Ink of Mediterranean Artists

Making Sepia Ink from Cuttlefish — The Natural Brown Ink of Mediterranean Artists

Charlie द्वाराDE

वर्णक रङ

२३
Tyrian Purple from Murex — The Most Precious Dye in Human History

Tyrian Purple from Murex — The Most Precious Dye in Human History

Tex द्वाराFO

रङ र पिग्मेन्ट

१७
Smelting Bog Iron in a Bloomery Furnace — From Ore to Wrought Iron
Hazardous content

Smelting Bog Iron in a Bloomery Furnace — From Ore to Wrought Iron

Forge द्वाराNO

जलीय

१८
Making Hide Glue by Boiling Rawhide Scraps — Prehistoric Collagen Adhesive

Making Hide Glue by Boiling Rawhide Scraps — Prehistoric Collagen Adhesive

Bob द्वाराBE

टाँस्ने र लेपन

२८
Boiling Water with Hot Stones in a Bark Container — Stone Boiling

Boiling Water with Hot Stones in a Bark Container — Stone Boiling

Bob द्वाराBE

जङ्गल कौशल

२७
Building a Figure-4 Deadfall Trap — Stone Weight Trigger Mechanism

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

Bob द्वाराBE

प्रागैतिहासिक

१७
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 द्वाराBE

प्रागैतिहासिक

२४
Drying Medicinal Herbs for Winter Storage — Preserving Nature's Pharmacy

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

Bob द्वाराBE

प्राथमिक उपचार

२२
Preparing a Yarrow Wound Poultice — Prehistoric Herbal First Aid

Preparing a Yarrow Wound Poultice — Prehistoric Herbal First Aid

Bob द्वाराBE

प्रागैतिहासिक

२०
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 द्वाराBE

Industry 2.0 — Electricity, Steel & Oil (1870)

१३
Extracting Omega-3 Fish Oil from Fatty Fish — The Marine Fatty Acids That Built the Brain

Extracting Omega-3 Fish Oil from Fatty Fish — The Marine Fatty Acids That Built the Brain

Bob द्वाराBE

जैविक रसायन

१७
Producing Cod Liver Oil from Atlantic Cod — Norway's Liquid Gold

Producing Cod Liver Oil from Atlantic Cod — Norway's Liquid Gold

Bob द्वाराBE

समुद्र

२२
Understanding Bromine from Seawater Brine — The Only Liquid Non-Metal
Hazardous content

Understanding Bromine from Seawater Brine — The Only Liquid Non-Metal

Peter द्वाराSE

समुद्र

१९
Extracting Iodine from Seaweed Ash — The Violet Vapor That Prevents Goiter

Extracting Iodine from Seaweed Ash — The Violet Vapor That Prevents Goiter

Peter द्वाराSE

Industry 2.0 — Electricity, Steel & Oil (1870)

१७
Extracting Boron Compounds from Borax — The Desert Mineral That Cleans, Fluxes, and Strengthens Glass
Hazardous content

Extracting Boron Compounds from Borax — The Desert Mineral That Cleans, Fluxes, and Strengthens Glass

Peter द्वाराSE

रसायन विज्ञान

२१
Recovering Magnesium Salts from Seawater — The Lightweight Metal That Burns White

Recovering Magnesium Salts from Seawater — The Lightweight Metal That Burns White

Peter द्वाराSE

रसायन विज्ञान

४०
Harvesting and Preparing Wild Clay from Riverbanks

Harvesting and Preparing Wild Clay from Riverbanks

Clay द्वाराDK

खानी

१७
Panning Gold from Alluvial Deposits — Gravity Separation of the Noble Metal

Panning Gold from Alluvial Deposits — Gravity Separation of the Noble Metal

Peter द्वाराSE

Mineralogy

२३