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October 2, 2017

Powers of 10 — Still as powerful today as when it premiered 40 years ago

The bleeding edge as viewed from the perspective of 1977, when Charles and Ray Eames  unveiled it.

[thanks to Joe Peach for suggesting an encore of my October 19, 2008 post]

October 2, 2017 at 12:01 PM | Permalink | Comments (0)

BehindTheMedspeak: What causes cracking sounds in the neck?

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Below, excerpts from a New York Times Science section Q&A by C. Claiborne Ray.

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What causes a neck to crack?

"It's because the joints boil when they are stretched," said Dr. Christopher J. Visco, director of sports medicine at NewYork-Presbyterian/Columbia University. "It's true," he added; the mechanism, involving the release of gas bubbles, "works for any joint in the body surrounded by a capsule, such as knuckles."

The neck has a series of paired joints, called facet joints, that run up and down each side. Each is filled with a bit of fluid and is surrounded by a capsule.

"When someone bends his or her neck, the capsule surrounding each joint is stretched out," Dr. Visco said. "This decreases the pressure on the fluid in the joint."

The lower the pressure on a fluid, the closer it gets to changing from liquid to gas.

"This is called boiling," Dr. Visco said. "Another term is cavitation."

"If someone decreases the pressure on any fluid enough, eventually that fluid will release its gas," he said. "And in the case of the neck pop, you hear a crack as the gas pops out of the fluid."

Generally, joint cracking is not harmful, Dr. Visco said, but when extreme stretching becomes a habit (to relieve tension, for instance), it can cause irritation of soft tissue or cartilage. And because important nerves and blood vessels run through the neck, amateur neck-cracking is ill advised. A gentle stretching routine is preferable.

October 2, 2017 at 10:01 AM | Permalink | Comments (1)

Head Case Personalized Luggage Cover — "Be the envy of baggage reclaim"

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Everything about this is great: the name, the idea, boj reader bubbub who clued me in.

From the website:

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You've tied on a little piece of colored ribbon and you've spent a load of money on that mad clingfilm machine, only to discover that everyone else has done exactly the same thing. 

Prevent Baggage Reclaim drama and make sure your bag stands out from the crowd by slipping it snugly inside a Head Case.

After all, nothing says "That's my luggage!" quite like a giant version of your own face, smiling back at you as it shudders round the conveyor belt. 

Head Cases are made from durable polyester spandex so they stretch to fit comfortably over your bag, while a series of well-placed openings ensure that all of your handles remain fully accessible.

Simply upload a high-quality photo of your face (or a pal's) and we'll print it on both sides of this striking personalized case cover.

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$26.79-$40.19.

[via Interesting Engineering]

October 2, 2017 at 08:01 AM | Permalink | Comments (1)

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