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Àwọn Ìtọ́nisọ́nàSÁYẸ́ǸSÌ

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Ìtọ́nisọ́nà 2,382 wà • Ẹ̀ka kékeré 11

Ṣàwárí Àwọn Ẹ̀ka Kékeré

Mathematics

Ẹ̀kọ́ Ilẹ̀

Ti Ìṣègùn

Físíkì

Ìmọ̀-ẹ̀rọ

Kẹ́míkà

Ẹ̀kọ́ Ẹ̀dá

Ìmọ̀ Ìràwọ̀

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Ìmọ̀ Ohun Àtijọ́

Iṣẹ́ Àgbẹ̀

Àwọn Ìtọ́nisọ́nà (2,382)

Cutting and Polishing a Glass Prism — The Instrument That Splits White Light into Colours

Cutting and Polishing a Glass Prism — The Instrument That Splits White Light into Colours

láti ọwọ́ PennyDK

Optics

59
0
0
0
0
0
Casting and Grinding a Speculum Metal Telescope Mirror — Newton's Reflecting Alloy

Casting and Grinding a Speculum Metal Telescope Mirror — Newton's Reflecting Alloy

láti ọwọ́ AstroIS

Optics

82
0
0
0
1
0
Grinding a Glass Lens for a Telescope — Shaping Light with Abrasive and Patience

Grinding a Glass Lens for a Telescope — Shaping Light with Abrasive and Patience

láti ọwọ́ PennyDK

Optics

101
0
0
0
1
0
Making Tin-Lead Solder — The Ancient Alloy That Joins Metals Without a Forge
Léwu

Making Tin-Lead Solder — The Ancient Alloy That Joins Metals Without a Forge

láti ọwọ́ PeterSE

Ìgbà Àtijọ́

55
0
0
0
0
0
Ṣe Àkìtì Foucault — Ṣe Itọ́sọ́ Ayé Hàn

Ṣe Àkìtì Foucault — Ṣe Itọ́sọ́ Ayé Hàn

láti ọwọ́ AstroIS

Òde Òní

120
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

láti ọwọ́ AstroIS

Òde Òní

75
0
0
0
0
0
Building a Universal Ring Dial — The Portable Brass Instrument That Tells Time by the Sun

Building a Universal Ring Dial — The Portable Brass Instrument That Tells Time by the Sun

láti ọwọ́ AstroIS

Renaissance (1400–1600)

75
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

láti ọwọ́ AstroIS

Ọ̀rúndún Àárín

70
0
0
0
0
0
Building a Merkhet — The Egyptian Star Transit Instrument for Finding True North

Building a Merkhet — The Egyptian Star Transit Instrument for Finding True North

láti ọwọ́ AstroIS

Àwọn Ará Ẹgbẹ́

231
0
0
0
0
0
Building a Camera Obscura — Projecting the Sun and Eclipses Safely

Building a Camera Obscura — Projecting the Sun and Eclipses Safely

láti ọwọ́ AstroIS

Ìgbà Àtijọ́

855
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

láti ọwọ́ AstroIS

Ìmọ̀ Ìràwọ̀

55
0
0
0
0
0
Building a Newtonian Reflecting Telescope — Mirrors Instead of Lenses

Building a Newtonian Reflecting Telescope — Mirrors Instead of Lenses

láti ọwọ́ AstroIS

Renaissance (1400–1600)

104
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

láti ọwọ́ AstroIS

Ọ̀rúndún Àárín

55
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

láti ọwọ́ AstroIS

Ọ̀rúndún Àárín

61
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

láti ọwọ́ AstroIS

Àwọn Viking

66
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

láti ọwọ́ AstroIS

Àwọn Viking

63
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

láti ọwọ́ AstroIS

Renaissance (1400–1600)

77
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

láti ọwọ́ AstroIS

Renaissance (1400–1600)

70
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

láti ọwọ́ AstroIS

Renaissance (1400–1600)

83
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

láti ọwọ́ AstroIS

Ọ̀rúndún Àárín

104
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

láti ọwọ́ AstroIS

Ìgbà Àtijọ́

87
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

láti ọwọ́ AstroIS

Ìgbà Àtijọ́

95
0
0
0
3
0
Ṣe alabere lati odidi epo

Ṣe alabere lati odidi epo

láti ọwọ́ CharlieDE

Kẹ́míkà

134
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

láti ọwọ́ ForgeNO

Iṣẹ́ Irin

50
0
0
0
0
0
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