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Ìtọ́nisọ́nà 759 wà • Ẹ̀ka kékeré 15
Ṣàwárí Àwọn Ẹ̀ka Kékeré
Àwọn Ìtọ́nisọ́nà (759)
The Icebox: Drain the Melt, Shut the Ice Off When the Door Opens
láti ọwọ́ Penny
Thermodynamics
17
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The Twist Doorbell: A Star Cam, a Pawl and a Spring-Thrown Hammer
láti ọwọ́ Penny
Ìmọ̀ Ìró
15
0
0
0
0
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The Hammock: A Slack Rope, a Swing and the Pull on the Anchors
láti ọwọ́ Penny
Ìmọ̀ Ẹ̀rọ
25
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The Umbrella Frame: Springs That Hold It Open and Hold It Shut
láti ọwọ́ Martin
Ìmọ̀ Ẹ̀rọ
12
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0
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The Washboard: Ridges, Soap and a Board That Gives
láti ọwọ́ YourGrandma
Àwọn Irinṣẹ́ Aṣọ
23
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The Flashlight: Dry Cells, a Small Lamp and a Thumb Ring
láti ọwọ́ Volt
Ẹ̀rọ Ìtanná
17
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The Screw Lamp Socket: Fitting a Bulb Makes the Circuit
láti ọwọ́ Volt
Ẹ̀rọ Ìtanná
20
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The Tubular Lantern: A Flame That Breathes Through Its Own Frame
láti ọwọ́ Emma
Thermodynamics
18
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The Tire Valve: A Plunger the Air Holds Shut
láti ọwọ́ Emma
Ìmọ̀ Ìṣàn Omi
17
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0
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The Bicycle Bell: A Hammer That Strikes Twice for Every Press
láti ọwọ́ Spartan
Ìmọ̀ Ẹ̀rọ
19
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0
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The Pedal Kickstand: A Brace That Folds Under the Pedal
láti ọwọ́ Spartan
Ìmọ̀ Ẹ̀rọ
15
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0
0
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The Truss Rod: A Curved Rod That Straightens a Guitar Neck
láti ọwọ́ Woody
Ìró àti Orin
18
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0
0
0
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The Kazoo: A Paper Membrane That Buzzes With Your Voice
láti ọwọ́ Woody
Ìró àti Orin
23
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The Capo: A Movable Nut You Clamp With One Hand
láti ọwọ́ Woody
Ìró àti Orin
12
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0
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The Life Raft That Works Either Way Up
láti ọwọ́ Emma
Ìmọ̀ Ìṣàn Omi
26
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The Fire-Alarm Telegraph: A Box That Sends Its Own Address
láti ọwọ́ Ed
Ẹ̀rọ Ìtanná
15
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0
0
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The Door Check: An Air Cushion With a Valve That Knows How Hard You Push
láti ọwọ́ Emma
Ìkọ́lé
21
0
0
0
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The Soap Dispenser: A Measured Dose Between Two Plungers
láti ọwọ́ Emma
Ìmọ̀ Ìṣàn Omi
18
0
0
0
0
0
The Impact Sprinkler: A Jet That Knocks Itself Round
láti ọwọ́ Emma
Iṣẹ́ Àgbẹ̀
22
0
0
0
0
0
The Flying Disc: A Wing Held Steady by Its Spin
láti ọwọ́ Spartan
Atẹ́gùn
10
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The Helical Spring Toy: A Spring Too Soft to Hurry
láti ọwọ́ Spartan
Àwọn Ohun Ìṣeré
6
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0
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The Box Kite: Two Cells of Cloth That Hold Themselves Steady
láti ọwọ́ Spartan
Atẹ́gùn
18
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0
0
0
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The Praxinoscope: Moving Pictures in a Ring of Mirrors
láti ọwọ́ Penny
Optics
15
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The Bandalore: A Yo-Yo With a Flywheel Rim
láti ọwọ́ Spartan
Àwọn Ohun Ìṣeré
16
0
0
0
0
0
Ń fi 24 nínú 759 hàn