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

សមុទ្រ

29 ប្លង់មាន

ប្លង់ (29)

Shipping Container

Shipping Container

ដោយ PixelFI

ទូក

21
0
0
0
0
0
Screw Propeller

Screw Propeller

ដោយ EmmaSE

ទូក

23
0
0
0
0
0
Building a Mariner's Sextant — The Instrument That Conquered the Oceans

Building a Mariner's Sextant — The Instrument That Conquered the Oceans

ដោយ AstroIS

សម័យទំនើប

23
0
0
0
0
0
Building an Arab Kamal — The Indian Ocean Navigator's Latitude Finder

Building an Arab Kamal — The Indian Ocean Navigator's Latitude Finder

ដោយ AstroIS

មជ្ឈិមសតវត្ស

34
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 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
Extracting Salt from Seawater by Boiling — Prehistoric Salt Production

Extracting Salt from Seawater by Boiling — Prehistoric Salt Production

ដោយ TheChefDK

ពីមុនប្រវត្តិសាស្ត្រ

32
0
0
0
1
0
Building a Prehistoric Coracle — A One-Person Bowl Boat from Woven Branches and Animal Hide

Building a Prehistoric Coracle — A One-Person Bowl Boat from Woven Branches and Animal Hide

ដោយ WoodyNO

សត្វ

30
0
0
0
0
0
Extracting Tyrian Purple from Murex Snails — The Most Precious Colour of Antiquity

Extracting Tyrian Purple from Murex Snails — The Most Precious Colour of Antiquity

ដោយ CharlieDE

សិល្បៈ

31
0
0
0
2
0
Making Sepia Ink from Cuttlefish — The Natural Brown Ink of Mediterranean Artists

Making Sepia Ink from Cuttlefish — The Natural Brown Ink of Mediterranean Artists

ដោយ CharlieDE

សិល្បៈ

81
0
0
0
0
0
Tyrian Purple from Murex — The Most Precious Dye in Human History

Tyrian Purple from Murex — The Most Precious Dye in Human History

ដោយ TexFO

បុរាណ

35
0
0
0
2
0
Understanding Whale Oil from Blubber Rendering — The Fuel That Lit the World Before Petroleum

Understanding Whale Oil from Blubber Rendering — The Fuel That Lit the World Before Petroleum

ដោយ BobBE

ជីវវិទ្យា

28
0
0
0
0
0
Extracting Omega-3 Fish Oil from Fatty Fish — The Marine Fatty Acids That Built the Brain

Extracting Omega-3 Fish Oil from Fatty Fish — The Marine Fatty Acids That Built the Brain

ដោយ BobBE

ជីវវិទ្យា

23
0
0
0
2
0
Producing Cod Liver Oil from Atlantic Cod — Norway's Liquid Gold

Producing Cod Liver Oil from Atlantic Cod — Norway's Liquid Gold

ដោយ BobBE

ជីវវិទ្យា

30
0
0
0
2
0
Understanding Bromine from Seawater Brine — The Only Liquid Non-Metal

Understanding Bromine from Seawater Brine — The Only Liquid Non-Metal

ដោយ PeterSE

រសាយនវិទ្យា

29
0
0
0
0
0
Extracting Iodine from Seaweed Ash — The Violet Vapor That Prevents Goiter
គ្រោះថ្នាក់

Extracting Iodine from Seaweed Ash — The Violet Vapor That Prevents Goiter

ដោយ PeterSE

រសាយនវិទ្យា

26
0
0
0
1
0
Recovering Magnesium Salts from Seawater — The Lightweight Metal That Burns White

Recovering Magnesium Salts from Seawater — The Lightweight Metal That Burns White

ដោយ PeterSE

រសាយនវិទ្យា

51
0
0
0
0
0
12បន្ទាប់