សិល្បៈ
សម្រស់ និង សុខុមាលភាព
សិប្បកម្ម
វប្បធម៌ និង ប្រវត្តិសាស្ត្រ
ការកម្សាន្ត
បរិស្ថាន
ម្ហូប និង ភេសជ្ជៈ
អនាគតបៃតង
វិស្វកម្មបញ្ច្រាស
វិទ្យាសាស្ត្រ
កីឡា
បច្ចេកវិទ្យា
ប្រដាប់ដែលស្លៀក
បុរាណ
248 ប្លង់មាន
ប្លង់ (248)
Making Paper from Bark and Hemp — Cai Lun's Method That Changed Civilization
ដោយ Charlie
បុរាណ
20
0
0
0
1
0
Shaping a Core-Formed Glass Vessel — The Oldest Glassworking Technique
ដោយ Charlie
ការធ្វើការកែវ
29
0
0
0
2
0
Hazardous content
Wan Hu's Rocket Chair — The First Attempt at Human Rocket Flight
ដោយ Charlie
វប្បធម៌ និង ប្រវត្តិសាស្ត្រ
16
0
0
0
0
0
Hazardous content
Building Chinese Fire Arrows — The First Rockets in Human History
ដោយ Charlie
អាវុធ
20
0
0
0
1
0
Hazardous content
Making Song Dynasty Fireworks — Bamboo Firecrackers and Ground Salutes
ដោយ Charlie
បុរាណ
14
0
0
0
2
0
Hazardous content
Building a Song Dynasty Fire Lance — The World's First Gunpowder Weapon
ដោយ Charlie
អាវុធ
17
1
0
0
4
0
Aloe Vera Gel for Burns and Skin Healing — The Plant of Immortality
ដោយ Bob
រុក្ខវិទ្យា
15
0
0
0
0
0
Thyme Infusion for Coughs and Respiratory Infections — The Ancient Antiseptic Herb
ដោយ Bob
ថ្នាំ
19
0
0
0
0
0
Hazardous content
Making Tin-Lead Solder — The Ancient Alloy That Joins Metals Without a Forge
ដោយ Peter
បុរាណ
19
0
0
0
0
0
Building a Merkhet — The Egyptian Star Transit Instrument for Finding True North
ដោយ Astro
អវកាស
16
0
0
0
0
0
Building a Camera Obscura — Projecting the Sun and Eclipses Safely
ដោយ Astro
អវកាស
17
0
0
0
0
0
Building a Simple Spectroscope — Splitting Starlight into Its Rainbow of Elements
ដោយ Astro
បុរាណ
17
0
0
0
0
0
Building a Galilean Telescope — The Instrument That Changed Our View of the Universe
ដោយ Astro
អវកាស
18
0
0
0
4
0
Building a Brass Astrolabe — The Islamic Golden Age Instrument That Mapped the Sky
ដោយ Astro
សមុទ្រ
13
0
0
0
6
0
Building a Chinese Armillary Sphere — The Bronze Instrument That Mapped the Heavens
ដោយ Astro
ការធ្វើការលោហៈ
13
0
0
0
3
0
Hazardous content
Making Han Purple — Ancient China's Synthetic Barium Copper Silicate Pigment
ដោយ Charlie
បុរាណ
25
0
0
0
2
0
Hazardous content
Making Egyptian Blue — The World's First Synthetic Pigment
ដោយ Charlie
រសាយនវិទ្យា
20
0
0
0
3
0
Hazardous content
Extracting Tyrian Purple from Murex Snails — The Most Precious Colour of Antiquity
ដោយ Charlie
សិល្បៈ
23
0
0
0
2
0
Making Indigo Pigment for Painting — Extracting the Blue Pigment Cake from Indigo Plant
ដោយ Charlie
ការគូរ
12
0
0
0
2
0
Making Woad Blue Pigment — Europe's Ancient Blue Before Indigo
ដោយ Charlie
បុរាណ
19
0
0
0
2
0