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@renee.obonagirl: Hands full? This 3-gallon can opens by motion. Tap to shop. Results may vary by surface and stain. Test on a small area first. #fyp #foryourpage #TikTokShopBlackFriday #TikTokShopCyberMonday #Moras
Renee Obonagirl
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Region: US
Saturday 07 November 2026 21:08:49 GMT
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The video shows a video of Leonardo da Vinci’s self-supporting bridge. This bridge is made only by interlocking wooden planks, there are no nails, ropes, or glue. The planks hold each other in place, and once assembled, the bridge becomes strong enough for a person to walk across a small ditch or gap. Leonardo da Vinci designed this bridge around 1485–1487. It was meant to be portable and quick to build, especially for military use during Cesare Borgia’s campaigns. Soldiers could carry the wooden pieces, assemble the bridge quickly, cross rivers or trenches, and then take it apart just as fast. The strength of the bridge comes from leverage, gravity, and friction, not from any fasteners. This design is recorded in da Vinci’s Codex Atlanticus. Some people wrongly compare this bridge to the Chinese “Rainbow Bridges” from the Song Dynasty (960–1279 CE). However, those bridges were permanent stone arch bridges, built to last for many years. They were not temporary, portable, or self-assembling wooden structures. So, while both show advanced engineering, da Vinci’s bridge was a simple, reusable, and mobile solution, very different in purpose and design from the large, permanent Chinese stone bridges. #leonardodavinci #physics #Science #educationalcontent
#ትግራይ_ንዘለኣለም_ትነብር🙏🇻🇳
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