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សម្រស់ និង សុខុមាលភាព
សិប្បកម្ម
វប្បធម៌ និង ប្រវត្តិសាស្ត្រ
ការកម្សាន្ត
បរិស្ថាន
ម្ហូប និង ភេសជ្ជៈ
វិស្វកម្មបញ្ច្រាស
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កីឡា
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ប្រដាប់ដែលស្លៀក
ប្លង់វប្បធម៌ និង ប្រវត្តិសាស្ត្រ

វប្បធម៌ និង ប្រវត្តិសាស្ត្រ

1,509 ប្លង់មាន • 3 ប្រភេទរង

រុករកប្រភេទរង

សម័យកាល

តាមរដូវ

ថ្ងៃឈប់ និង ពិធីបុណ្យ

ប្លង់ (1,509)

Understanding Chlorine from Salt Electrolysis — The Element That Purifies Water

Understanding Chlorine from Salt Electrolysis — The Element That Purifies Water

ដោយ PeterSE

រសាយនវិទ្យា

51
0
0
0
3
0
Understanding Fluorine from Fluorite — The Most Reactive Element on Earth
គ្រោះថ្នាក់

Understanding Fluorine from Fluorite — The Most Reactive Element on Earth

ដោយ PeterSE

រសាយនវិទ្យា

39
0
0
0
4
0
Extracting Iodine from Seaweed Ash — The Violet Vapor That Prevents Goiter
គ្រោះថ្នាក់

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

ដោយ PeterSE

រសាយនវិទ្យា

56
0
0
0
4
0
Understanding Tantalum from Columbite-Tantalite — The Conflict Metal Inside Every Phone

Understanding Tantalum from Columbite-Tantalite — The Conflict Metal Inside Every Phone

ដោយ PeterSE

រសាយនវិទ្យា

51
0
0
0
2
0
Extracting Gallium from Bauxite Residue — The Liquid Metal That Melts in Your Hand

Extracting Gallium from Bauxite Residue — The Liquid Metal That Melts in Your Hand

ដោយ PeterSE

រសាយនវិទ្យា

63
0
0
0
1
0
Recovering Selenium from Copper Refinery Anode Slime — The Photoconductor That Sees Light
គ្រោះថ្នាក់

Recovering Selenium from Copper Refinery Anode Slime — The Photoconductor That Sees Light

ដោយ PeterSE

រសាយនវិទ្យា

60
0
0
0
2
0
Extracting Neodymium-Rich Rare Earth Oxide from Monazite — The Magnet Metal That Reshaped Technology
គ្រោះថ្នាក់

Extracting Neodymium-Rich Rare Earth Oxide from Monazite — The Magnet Metal That Reshaped Technology

ដោយ PeterSE

រសាយនវិទ្យា

37
0
0
0
11
0
Extracting Boron Compounds from Borax — The Desert Mineral That Cleans, Fluxes, and Strengthens Glass

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

ដោយ PeterSE

រសាយនវិទ្យា

56
0
0
0
1
0
Extracting Lithium from Spodumene — The Lightest Metal That Powers the Future
គ្រោះថ្នាក់

Extracting Lithium from Spodumene — The Lightest Metal That Powers the Future

ដោយ PeterSE

រសាយនវិទ្យា

49
0
0
0
3
0
Alloying Steel from Iron and Carbon — The Metal That Built the Modern World

Alloying Steel from Iron and Carbon — The Metal That Built the Modern World

ដោយ MaryFI

បុរាណ

72
0
0
0
6
0
Alloying Brass from Copper and Zinc — The Golden Metal That Is Neither Gold Nor Bronze

Alloying Brass from Copper and Zinc — The Golden Metal That Is Neither Gold Nor Bronze

ដោយ MaryFI

លង្ហិន

51
0
0
0
4
0
Making Black Powder from Saltpeter, Sulfur, and Charcoal — The Mixture That Changed the World
គ្រោះថ្នាក់

Making Black Powder from Saltpeter, Sulfur, and Charcoal — The Mixture That Changed the World

ដោយ CharlieDE

មជ្ឈិមសតវត្ស

145
0
0
0
7
0
Building a Box Bellows — The Breath That Makes Metal Obey Fire

Building a Box Bellows — The Breath That Makes Metal Obey Fire

ដោយ EmmaSE

មេកានិក

85
0
0
0
7
0
Making Soda-Lime Glass from Raw Materials — The Recipe That Has Not Changed in 5,000 Years

Making Soda-Lime Glass from Raw Materials — The Recipe That Has Not Changed in 5,000 Years

ដោយ MaryFI

បុរាណ

129
0
0
0
17
0
Understanding Oxygen Through Combustion — The Element That Makes Fire Breathe

Understanding Oxygen Through Combustion — The Element That Makes Fire Breathe

ដោយ PeterSE

រសាយនវិទ្យា

57
0
0
0
4
0
Generating Hydrogen Gas from Acid and Metal — The Lightest Element in the Universe

Generating Hydrogen Gas from Acid and Metal — The Lightest Element in the Universe

ដោយ PeterSE

រសាយនវិទ្យា

78
0
0
0
3
0
Understanding Carbon Through Charcoal Making — The Element of Life and Fire

Understanding Carbon Through Charcoal Making — The Element of Life and Fire

ដោយ PeterSE

រសាយនវិទ្យា

106
0
0
0
1
0
Recovering Magnesium Salts from Seawater — The Lightweight Metal That Burns White

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

ដោយ PeterSE

រសាយនវិទ្យា

89
0
0
0
1
0
Growing Saltpeter from Niter Beds — The Explosive Element in Every Living Thing

Growing Saltpeter from Niter Beds — The Explosive Element in Every Living Thing

ដោយ PeterSE

រសាយនវិទ្យា

266
0
0
0
5
0
Recognizing Silicon in Nature — From Flint Nodules to Quartz Crystals

Recognizing Silicon in Nature — From Flint Nodules to Quartz Crystals

ដោយ PeterSE

រសាយនវិទ្យា

79
0
0
0
1
0
Burning Quicklime from Limestone — The Element That Built Civilization

Burning Quicklime from Limestone — The Element That Built Civilization

ដោយ PeterSE

រសាយនវិទ្យា

77
0
0
0
6
0
Extracting Potash from Wood Ash — The Alkali Element Hidden in Every Fire

Extracting Potash from Wood Ash — The Alkali Element Hidden in Every Fire

ដោយ PeterSE

រសាយនវិទ្យា

281
0
0
0
7
0
Understanding Tellurium from Calaverite — The Rarest Stable Metalloid from Gold Ore

Understanding Tellurium from Calaverite — The Rarest Stable Metalloid from Gold Ore

ដោយ PeterSE

រសាយនវិទ្យា

20
0
0
0
1
0
Understanding Zirconium from Zircon — The Ancient Gemstone That Clocks Earth's Age

Understanding Zirconium from Zircon — The Ancient Gemstone That Clocks Earth's Age

ដោយ PeterSE

រសាយនវិទ្យា

23
0
0
0
2
0
បង្ហាញ 24 ក្នុងចំណោម 1509