Tagged With engineering

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Video: Tall buildings often have tuned mass dampers hidden inside their structures to stabilise them against the wind. Those tuned mass dampers are huge and heavy and help limit a building's movement by swaying in the opposite direction of the building. That is, if the wind is making a skyscraper sway to the right, the damper will sway to the left to dissipate the kinetic energy, and reduce the, um, swaying. What's interesting is that the Burj Khalifa, the world's tallest building, doesn't have that.

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Our perpetually-dropped smartphones have pushed glass manufacturers to create stronger and more durable materials to survive our clumsiness. But if you're curious just how advanced glass making techniques have gotten, someone has made a 9m working glass slide that's completely transparent.

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Video: Forgotten Weapons sees a lot of odd firearms, from a machine gun that Italian troops would mount to bicycles to Uzis that look like horseshoes. But the Frankenau purse gun takes the cake for pure strangeness.

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There is a certain intimacy that comes with getting a tattoo. Not only are you decorating your own skin in a unique way, but you're also sharing that experience with the artist who is essentially making you bleed over and over again.

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Last year, US footballer Chris Borland of the San Francisco 49ers announced that he was quitting football because of the high risk of concussion and long-term brain damage, despite protective helmets. And he's not alone: It's a growing concern, particularly for teenage athletes. But a new collar inspired by the humble woodpecker may help protect athletes from such trauma in the future.