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សម្រស់ និង សុខុមាលភាព
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វប្បធម៌ និង ប្រវត្តិសាស្ត្រ
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ប្លង់វប្បធម៌ និង ប្រវត្តិសាស្ត្រ
វប្បធម៌ និង ប្រវត្តិសាស្ត្រ
1,561 ប្លង់មាន • 3 ប្រភេទរង
រុករកប្រភេទរង
ប្លង់ (1,561)
Sieve of Eratosthenes — Hunt Prime Numbers on a Grid
ដោយ Mark
បុរាណ
40
0
0
0
0
0
Building Leonardo da Vinci's Armored Car — The Ancestor of the Tank
ដោយ Emma
Renaissance (1400–1600)
43
0
0
0
0
0
Building Leonardo da Vinci's Ornithopter — The Flapping-Wing Flying Machine
ដោយ Emma
Renaissance (1400–1600)
72
0
0
0
0
0
Proving the Pythagorean Theorem by Cutting Squares — a² + b² = c²
ដោយ Mark
បុរាណ
51
0
0
0
0
0
Building Leonardo da Vinci's Revolving Bridge — The Swing Bridge for a Marching Army
ដោយ Emma
Renaissance (1400–1600)
49
0
0
0
0
0
Building Leonardo da Vinci's Self-Propelled Cart — The First Programmable Robot
ដោយ Emma
Renaissance (1400–1600)
44
0
0
0
0
0
Building Leonardo da Vinci's Aerial Screw — The Ancestor of the Helicopter
ដោយ Emma
Renaissance (1400–1600)
50
0
0
0
0
0
Measuring the Earth from a Single Mountain — Al-Biruni's Horizon-Dip Method
ដោយ Astro
មជ្ឈិមសតវត្ស
53
0
0
0
0
0
Measuring Pi — Archimedes' Method of Squeezing a Circle Between Polygons
ដោយ Mark
បុរាណ
42
0
0
0
0
0
The Law of the Lever — Archimedes' Balance of Weight and Distance
ដោយ Martin
បុរាណ
60
0
0
0
1
0
Testing a Gold Crown with Water — Archimedes' Buoyancy and the Eureka Method
ដោយ Penny
បុរាណ
52
0
0
0
0
0
Measuring How Far the Sun Is Compared to the Moon — Aristarchus' Half-Moon Method
ដោយ Astro
បុរាណ
59
0
0
0
0
0
Measuring the Height of a Pyramid by Its Shadow — Thales' Similar Triangles
ដោយ Mark
បុរាណ
90
0
0
0
0
0
Building Leonardo da Vinci's Parachute — The Sealed Linen Pyramid of 1485
ដោយ Emma
Renaissance (1400–1600)
38
0
0
0
0
0
Measuring the Circumference of the Earth — Eratosthenes' Shadow Method
ដោយ Astro
បុរាណ
41
0
0
0
0
0
Tablet Weaving a Patterned Band — Card Weaving the Trim of the Viking World
ដោយ Tex
មជ្ឈិមសតវត្ស
43
0
0
0
0
0
Nalbinding a Wool Sock in the Oslo Stitch — The Looped Fabric Before Knitting
ដោយ Tex
មជ្ឈិមសតវត្ស
60
0
0
0
0
0
Binding a Besom Broom — The Birch-Twig Broom on a Hazel Handle
ដោយ YourGrandma
មជ្ឈិមសតវត្ស
45
0
0
0
0
0
Carving a Wooden Clog — The All-Wood Sabot from a Single Green Block
ដោយ Woody
មជ្ឈិមសតវត្ស
50
0
0
0
0
0
Making a Horn Spoon — Shaping Cattle Horn with Heat and Pressure
ដោយ Woody
មជ្ឈិមសតវត្ស
38
0
0
0
0
0
Making a Coiled-Straw Bee Skep — The Traditional Beehive Before Wooden Boxes
ដោយ Karen
មជ្ឈិមសតវត្ស
60
0
0
0
1
0
Building a Hot Blast Stove — Preheating the Air That Tripled the Blast Furnace
ដោយ Tarkin
សម័យទំនើប
51
0
0
0
0
0
Pasteurising Milk and Wine — Gentle Heat That Kills the Germs Without Cooking
ដោយ Galadriel
សម័យទំនើប
44
0
0
0
0
0
Casting Reinforced Concrete — Marrying Steel and Stone into the Modern Structure
ដោយ Balin
សម័យទំនើប
50
0
0
0
0
0
បង្ហាញ 24 ក្នុងចំណោម 1561