LIST
FEGURÐ OG VELLÍÐAN
HANDVERK
MENNING OG SAGA
SKEMMTUN
UMHVERFI
MATUR OG DRYKKUR
ÖFUGVERKFRÆÐI
VÍSINDI
ÍÞRÓTTIR
TÆKNI
KLÆÐANLEG TÆKNI
TeikningarVÍSINDI
VÍSINDI
505 teikningar tiltækar • 11 undirflokkar
Skoða undirflokka
Teikningar (505)
Plantain Leaf Poultice — The Universal Wound Herb Found on Every Continent
eftir Bob
Grasafræði
50
0
0
0
1
0
Chamomile Tea as Medicine — The Ancient Flower Infusion for Calm and Digestion
eftir Bob
Heitir drykkir
31
0
0
0
5
0
Making a Silver Mirror by the Liebig Process — Depositing Metallic Silver on Glass
eftir Charlie
Metal
33
0
0
0
0
0
Cutting and Polishing a Glass Prism — The Instrument That Splits White Light into Colours
eftir Penny
Renaissance (1400–1600)
22
0
0
0
0
0
Casting and Grinding a Speculum Metal Telescope Mirror — Newton's Reflecting Alloy
eftir Astro
Eðlisfræði
35
0
0
0
1
0
Grinding a Glass Lens for a Telescope — Shaping Light with Abrasive and Patience
eftir Penny
Eðlisfræði
38
0
0
0
1
0
Hættulegt
Making Tin-Lead Solder — The Ancient Alloy That Joins Metals Without a Forge
eftir Peter
Metal
27
0
0
0
0
0
Byggðu Foucault Pendúla — Sannaðu Snúning Jarðar með Sveifandi Þyngd
eftir Astro
Stjörnufræði
53
0
0
0
0
0
Building a Mariner's Sextant — The Instrument That Conquered the Oceans
eftir Astro
Geimur
23
0
0
0
0
0
Building a Universal Ring Dial — The Portable Brass Instrument That Tells Time by the Sun
eftir Astro
Ljósfræði
39
0
0
0
0
0
Building an Arab Kamal — The Indian Ocean Navigator's Latitude Finder
eftir Astro
Geimur
29
0
0
0
0
0
Building a Merkhet — The Egyptian Star Transit Instrument for Finding True North
eftir Astro
Fornstjörnufræði
39
0
0
0
0
0
Building a Camera Obscura — Projecting the Sun and Eclipses Safely
eftir Astro
Ljósfræði
43
0
0
0
0
0
Building a Simple Spectroscope — Splitting Starlight into Its Rainbow of Elements
eftir Astro
Geimur
24
0
0
0
0
0
Building a Newtonian Reflecting Telescope — Mirrors Instead of Lenses
eftir Astro
Ljósfræði
33
1
0
0
2
0
Building a Celestial Globe — Mapping the Stars on a Sphere
eftir Astro
Fornstjörnufræði
22
0
0
0
0
0
Building a Nocturnal — The Medieval Star Clock That Tells Time by Polaris
eftir Astro
Sjór
15
0
0
0
0
0
Using a Viking Sunstone — Navigating by Polarized Skylight with Iceland Spar
eftir Astro
Víkingar
28
0
0
0
1
0
Preparing a Viking Sunstone — Selecting and Cleaving Optical Calcite for Navigation
eftir Astro
Fornstjörnufræði
28
0
0
0
1
0
Building a Mural Quadrant — The Wall-Mounted Instrument for Precise Star Positions
eftir Astro
Trésmiði
38
0
0
0
1
0