សិល្បៈ
សម្រស់ និង សុខុមាលភាព
សិប្បកម្ម
វប្បធម៌ និង ប្រវត្តិសាស្ត្រ
ការកម្សាន្ត
បរិស្ថាន
ម្ហូប និង ភេសជ្ជៈ
វិស្វកម្មបញ្ច្រាស
វិទ្យាសាស្ត្រ
កីឡា
បច្ចេកវិទ្យា
ប្រដាប់ដែលស្លៀក
ប្លង់វិទ្យាសាស្ត្រ

វិទ្យាសាស្ត្រ

601 ប្លង់មាន • 11 ប្រភេទរង

ប្លង់ (601)

Building a Camera Obscura — Projecting the Sun and Eclipses Safely

Building a Camera Obscura — Projecting the Sun and Eclipses Safely

ដោយ AstroIS

បុរាណ

90
0
0
0
0
0
Building a Simple Spectroscope — Splitting Starlight into Its Rainbow of Elements

Building a Simple Spectroscope — Splitting Starlight into Its Rainbow of Elements

ដោយ AstroIS

តារាវិទ្យា

24
0
0
0
0
0
Building a Newtonian Reflecting Telescope — Mirrors Instead of Lenses

Building a Newtonian Reflecting Telescope — Mirrors Instead of Lenses

ដោយ AstroIS

Renaissance (1400–1600)

33
1
0
0
2
0
Building a Celestial Globe — Mapping the Stars on a Sphere

Building a Celestial Globe — Mapping the Stars on a Sphere

ដោយ AstroIS

មជ្ឈិមសតវត្ស

23
0
0
0
0
0
Building a Nocturnal — The Medieval Star Clock That Tells Time by Polaris

Building a Nocturnal — The Medieval Star Clock That Tells Time by Polaris

ដោយ AstroIS

មជ្ឈិមសតវត្ស

15
0
0
0
0
0
Using a Viking Sunstone — Navigating by Polarized Skylight with Iceland Spar

Using a Viking Sunstone — Navigating by Polarized Skylight with Iceland Spar

ដោយ AstroIS

វីកឃីង

29
0
0
0
1
0
Preparing a Viking Sunstone — Selecting and Cleaving Optical Calcite for Navigation

Preparing a Viking Sunstone — Selecting and Cleaving Optical Calcite for Navigation

ដោយ AstroIS

វីកឃីង

28
0
0
0
1
0
Building a Mural Quadrant — The Wall-Mounted Instrument for Precise Star Positions

Building a Mural Quadrant — The Wall-Mounted Instrument for Precise Star Positions

ដោយ AstroIS

Renaissance (1400–1600)

39
0
0
0
1
0
Building a Galilean Telescope — The Instrument That Changed Our View of the Universe

Building a Galilean Telescope — The Instrument That Changed Our View of the Universe

ដោយ AstroIS

Renaissance (1400–1600)

24
0
0
0
4
0
Building a Copernican Orrery — A Mechanical Model of the Heliocentric Solar System

Building a Copernican Orrery — A Mechanical Model of the Heliocentric Solar System

ដោយ AstroIS

Renaissance (1400–1600)

22
0
0
0
3
0
Building a Cross-Staff — The Medieval Navigator's Angle-Measuring Instrument

Building a Cross-Staff — The Medieval Navigator's Angle-Measuring Instrument

ដោយ AstroIS

មជ្ឈិមសតវត្ស

32
0
0
0
6
0
Building a Brass Astrolabe — The Islamic Golden Age Instrument That Mapped the Sky

Building a Brass Astrolabe — The Islamic Golden Age Instrument That Mapped the Sky

ដោយ AstroIS

លង្ហិន

25
0
0
0
7
0
Building a Chinese Armillary Sphere — The Bronze Instrument That Mapped the Heavens

Building a Chinese Armillary Sphere — The Bronze Instrument That Mapped the Heavens

ដោយ AstroIS

សំរិទ្ធ

20
0
0
0
3
0
Making Lye from Wood Ash — The Alkali That Unlocked Soap, Tanning, and Dyeing

Making Lye from Wood Ash — The Alkali That Unlocked Soap, Tanning, and Dyeing

ដោយ CharlieDE

រសាយនវិទ្យា

57
0
0
0
0
0
Striking Fire with Flint and Steel — The Iron Age Upgrade to Fire Starting

Striking Fire with Flint and Steel — The Iron Age Upgrade to Fire Starting

ដោយ ForgeNO

ការធ្វើការលោហៈ

21
0
0
0
0
0
Making a Stone Hoe — The First Agricultural Tool

Making a Stone Hoe — The First Agricultural Tool

ដោយ MaryFI

ពីមុនប្រវត្តិសាស្ត្រ

34
0
0
0
0
0
Making Bakelite — The First Fully Synthetic Plastic That Launched the Age of Polymers
គ្រោះថ្នាក់

Making Bakelite — The First Fully Synthetic Plastic That Launched the Age of Polymers

ដោយ CharlieDE

Plastic

31
0
0
0
1
0
Synthesising Aspirin — The Reaction That Founded Modern Pharmaceuticals

Synthesising Aspirin — The Reaction That Founded Modern Pharmaceuticals

ដោយ CharlieDE

រសាយនវិទ្យា

23
0
0
0
1
0
Making Celluloid — The First Synthetic Plastic That Changed Everything
គ្រោះថ្នាក់

Making Celluloid — The First Synthetic Plastic That Changed Everything

ដោយ CharlieDE

Plastic

48
0
0
0
3
0
Making Nitrocellulose (Guncotton) — The Nitration That Launched Smokeless Powder and Plastics
គ្រោះថ្នាក់

Making Nitrocellulose (Guncotton) — The Nitration That Launched Smokeless Powder and Plastics

ដោយ CharlieDE

Plastic

62
0
0
0
2
0