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រូបវិទ្យា
747 ប្លង់មាន • 15 ប្រភេទរង
រុករកប្រភេទរង
ប្លង់ (747)
Building Ctesibius' Force Pump — The First Double-Acting Piston Pump
ដោយ Emma
បុរាណ
120
0
0
0
3
0
Building a Heron's Automaton — A Self-Moving Theatrical Machine Powered by Falling Sand
ដោយ Emma
បុរាណ
53
0
0
0
0
0
Building an Aeolipile — Hero's Steam-Powered Spinning Sphere
ដោយ Penny
បុរាណ
41
0
0
0
1
0
Building a Compound Pulley (Block and Tackle) — Archimedes' Force Multiplier
ដោយ Penny
បុរាណ
76
0
0
0
0
0
Building a Roman Ballista — The Torsion-Powered Bolt Thrower
ដោយ Emma
រ៉ូម៉ាំង
209
0
0
0
0
0
Designing a Roman Bathhouse (Thermae) — The Engineering of Public Bathing
ដោយ Emma
រ៉ូម៉ាំង
48
0
0
0
0
0
Building a Roman Stone Arch Bridge — Spanning Rivers with Voussoirs and Cofferdams
ដោយ Emma
រ៉ូម៉ាំង
66
0
0
0
1
0
Carving a Lodestone Compass Spoon — China's Magnetic Direction Finder
ដោយ Penny
បុរាណ
39
0
0
0
0
0
Making a Silver Mirror by the Liebig Process — Depositing Metallic Silver on Glass
ដោយ Charlie
Metal
91
0
0
0
0
0
Cutting and Polishing a Glass Prism — The Instrument That Splits White Light into Colours
ដោយ Penny
អុបទិក
51
0
0
0
0
0
Casting and Grinding a Speculum Metal Telescope Mirror — Newton's Reflecting Alloy
ដោយ Astro
Metal
58
0
0
0
1
0
Grinding a Glass Lens for a Telescope — Shaping Light with Abrasive and Patience
ដោយ Penny
អុបទិក
79
0
0
0
1
0
Building a Foucault Pendulum — Proving Earth Rotates with a Swinging Weight
ដោយ Astro
សម័យទំនើប
99
0
0
0
0
0
Building a Mariner's Sextant — The Instrument That Conquered the Oceans
ដោយ Astro
សម័យទំនើប
62
0
0
0
0
0
Building a Universal Ring Dial — The Portable Brass Instrument That Tells Time by the Sun
ដោយ Astro
លង្ហិន
73
0
0
0
0
0
Building a Camera Obscura — Projecting the Sun and Eclipses Safely
ដោយ Astro
បុរាណ
844
0
0
0
0
0
Building a Simple Spectroscope — Splitting Starlight into Its Rainbow of Elements
ដោយ Astro
តារាវិទ្យា
52
0
0
0
0
0
Building a Newtonian Reflecting Telescope — Mirrors Instead of Lenses
ដោយ Astro
Renaissance (1400–1600)
85
1
0
0
2
0
Understanding Polonium from Uranium Ore — The Deadly Discovery That Launched Nuclear Science
ដោយ Peter
សម័យទំនើប
21
0
0
0
0
0
Understanding Promethium from Nuclear Fission — The Phantom Lanthanide
ដោយ Peter
សម័យទំនើប
14
0
0
0
0
0
Understanding Technetium from Nuclear Fission — The First Artificially Made Element
ដោយ Peter
សម័យទំនើប
25
0
0
0
0
0
គ្រោះថ្នាក់
Understanding Thorium from Monazite — The Nuclear Fuel That Could Replace Uranium
ដោយ Peter
នុយក្លេអែរ
14
0
0
0
4
0
Understanding Hafnium from Zircon — The Nuclear Fuel Rod Guardian
ដោយ Peter
សម័យទំនើប
27
0
0
0
0
0
Building a Box Bellows — The Breath That Makes Metal Obey Fire
ដោយ Emma
មេកានិក
85
0
0
0
7
0
បង្ហាញ 24 ក្នុងចំណោម 747