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442 чертежей доступно • 11 подкатегорий
Обзор подкатегорий
Чертежи (442)
Saving Lettuce Seeds — Letting the Leaf Crop Bolt
от Bob
HOMESTEADING
26
0
0
0
0
0
Saving Squash Seeds — Hand-Pollination to Keep Them Pure
от Bob
Растениеводство
24
0
0
0
0
0
Saving Tomato Seeds — The Fermentation Method
от Bob
Renaissance (1400–1600)
26
0
0
0
0
0
Saving Carrot Seeds — The Two-Year Biennial
от Bob
Растениеводство
25
0
0
0
0
0
Saving Bean and Pea Seeds — The Easiest First Seed to Save
от Bob
Древний
16
0
0
0
0
0
Overwintering Roots for Seed — Getting a Biennial Through Winter
от Bob
Средние века
19
0
0
0
0
0
Aryabhata's Spinning Earth — A Torch, a Ball, and Day and Night
от Astro
Астрономия
27
0
0
0
0
0
Zero and Place-Value — Build an Abacus and Count Like the World Does
от Mark
Вычислительный
25
0
0
0
0
0
Projectile Motion — Launch a Ball and Measure Its Flight
от Penny
Mathematics
19
0
0
0
0
0
Hooke's Law — Stretch a Spring and Find Its Stiffness
от Penny
Физика
21
0
0
0
0
0
The Pendulum — Time a Swing and Weigh Gravity
от Martin
Физика
16
0
0
0
0
0
The Sand Reckoner — Count the Grains and Tame Huge Numbers
от Mark
Древний
21
0
0
0
0
0
Air Has Weight — The Upside-Down Glass and Torricelli's Barometer
от Penny
Scientific Revolution (1600–1760)
21
0
0
0
0
0
Boyle's Law — Squeeze a Syringe of Air
от Charlie
Scientific Revolution (1600–1760)
23
0
0
0
1
0
Magic Squares — Arrange Numbers So Every Line Adds the Same
от Mark
Вычислительный
15
0
0
0
0
0
The Mercator Map — Peel an Orange and See Why Flat Maps Lie
от Mark
Renaissance (1400–1600)
15
0
0
0
0
0
Snell's Law — Measure How Light Bends (Laser and Protractor)
от Penny
Mathematics
20
0
0
0
0
0
Trigonometry — Build a Clinometer and Measure a Tree's Height
от Mark
Mathematics
21
0
0
0
0
0
Galileo's Falling Bodies — Race a Ball Down a Ramp
от Penny
Mathematics
15
0
0
0
0
0
Kepler's Laws — Draw a Planet's Ellipse with Two Pins and a String
от Astro
Scientific Revolution (1600–1760)
24
0
0
0
0
0