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វប្បធម៌ និង ប្រវត្តិសាស្ត្រ
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វិទ្យាសាស្ត្រ
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បច្ចេកវិទ្យា
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វិទ្យាសាស្ត្រ
1,546 ប្លង់មាន • 11 ប្រភេទរង
រុករកប្រភេទរង
ប្លង់ (1,546)
Honey as a Wound Dressing — The Oldest Antimicrobial Medicine Known to Humanity
ដោយ Bob
ពីមុនប្រវត្តិសាស្ត្រ
54
0
0
0
3
0
Plantain Leaf Poultice — The Universal Wound Herb Found on Every Continent
ដោយ Bob
ពីមុនប្រវត្តិសាស្ត្រ
135
0
0
0
1
0
Chamomile Tea as Medicine — The Ancient Flower Infusion for Calm and Digestion
ដោយ Bob
ពីមុនប្រវត្តិសាស្ត្រ
55
0
0
0
5
0
Making a Silver Mirror by the Liebig Process — Depositing Metallic Silver on Glass
ដោយ Charlie
Metal
92
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
គ្រោះថ្នាក់
Making Tin-Lead Solder — The Ancient Alloy That Joins Metals Without a Forge
ដោយ Peter
Metal
47
0
0
0
0
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 an Arab Kamal — The Indian Ocean Navigator's Latitude Finder
ដោយ Astro
មជ្ឈិមសតវត្ស
62
0
0
0
0
0
Building a Merkhet — The Egyptian Star Transit Instrument for Finding True North
ដោយ Astro
អេហ្ស៊ីប
181
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
Building a Celestial Globe — Mapping the Stars on a Sphere
ដោយ Astro
មជ្ឈិមសតវត្ស
46
0
0
0
0
0
Building a Nocturnal — The Medieval Star Clock That Tells Time by Polaris
ដោយ Astro
មជ្ឈិមសតវត្ស
50
0
0
0
0
0
Using a Viking Sunstone — Navigating by Polarized Skylight with Iceland Spar
ដោយ Astro
វីកឃីង
60
0
0
0
1
0
Preparing a Viking Sunstone — Selecting and Cleaving Optical Calcite for Navigation
ដោយ Astro
វីកឃីង
57
0
0
0
1
0
Building a Mural Quadrant — The Wall-Mounted Instrument for Precise Star Positions
ដោយ Astro
Renaissance (1400–1600)
70
0
0
0
1
0
Building a Galilean Telescope — The Instrument That Changed Our View of the Universe
ដោយ Astro
Renaissance (1400–1600)
62
0
0
0
4
0
Building a Copernican Orrery — A Mechanical Model of the Heliocentric Solar System
ដោយ Astro
Renaissance (1400–1600)
64
0
0
0
3
0
Building a Cross-Staff — The Medieval Navigator's Angle-Measuring Instrument
ដោយ Astro
មជ្ឈិមសតវត្ស
77
0
0
0
6
0
បង្ហាញ 24 ក្នុងចំណោម 1546