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ប្លង់Culture And History
វប្បធម៌ និង ប្រវត្តិសាស្ត្រ
404 ប្លង់មាន • 3 ប្រភេទរង
រុករកប្រភេទរង
ប្លង់ (404)
Hazardous content
Extracting Neodymium-Rich Rare Earth Oxide from Monazite — The Magnet Metal That Reshaped Technology
by Peter
Modern
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8
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Hazardous content
Extracting Boron Compounds from Borax — The Desert Mineral That Cleans, Fluxes, and Strengthens Glass
by Peter
Chemistry
3
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5
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Hazardous content
Extracting Lithium from Spodumene — The Lightest Metal That Powers the Future
by Peter
Modern
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6
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Hazardous content
Alloying Steel from Iron and Carbon — The Metal That Built the Modern World
by Mary
Metalworking
2
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4
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Hazardous content
Alloying Brass from Copper and Zinc — The Golden Metal That Is Neither Gold Nor Bronze
by Mary
Chemistry
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6
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Hazardous content
Making Black Powder from Saltpeter, Sulfur, and Charcoal — The Mixture That Changed the World
by Charlie
Weaponry
2
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6
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Building a Box Bellows — The Breath That Makes Metal Obey Fire
by Emma
Woodworking
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12
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Making Soda-Lime Glass from Raw Materials — The Recipe That Has Not Changed in 5,000 Years
by Mary
Ancient
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10
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Understanding Oxygen Through Combustion — The Element That Makes Fire Breathe
by Peter
Periodic Table
6
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Generating Hydrogen Gas from Acid and Metal — The Lightest Element in the Universe
by Peter
Ancient
5
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Understanding Carbon Through Charcoal Making — The Element of Life and Fire
by Peter
Chemistry
6
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1
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Recovering Magnesium Salts from Seawater — The Lightweight Metal That Burns White
by Peter
Chemistry
10
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1
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Growing Saltpeter from Niter Beds — The Explosive Element in Every Living Thing
by Peter
Periodic Table
10
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1
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Recognizing Silicon in Nature — From Flint Nodules to Quartz Crystals
by Peter
Periodic Table
6
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2
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Burning Quicklime from Limestone — The Element That Built Civilization
by Peter
Ancient
5
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0
0
2
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Extracting Potash from Wood Ash — The Alkali Element Hidden in Every Fire
by Peter
Raw Materials
6
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3
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Understanding Tellurium from Calaverite — The Rarest Stable Metalloid from Gold Ore
by Peter
Ancient
1
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0
0
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Understanding Zirconium from Zircon — The Ancient Gemstone That Clocks Earth's Age
by Peter
Ancient
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Hazardous content
Understanding Uranium from Uraninite — The Element That Changed Everything
by Peter
Mining
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Hazardous content
Understanding Vanadium from Vanadinite — The Rainbow-Blooded Metal Named for a Goddess
by Peter
Ancient
4
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0
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