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October 10, 2013

Sergio de la Pava on time (pages 447 and 448 of "A Naked Singularity")

600a

600b

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This fantastic book just keeps on giving.

October 10, 2013 at 08:01 PM | Permalink | Comments (1) | TrackBack

Issey Miyake's first lamp

101818_A2_Lamp_Miyake

From the website:

101818_B2_Lamp_Miyake

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101818_C2_Lamp_Miyake

Mendori Lamp

Created by using a mathematical program and origami techniques, this beautifully complex shade is Issey Miyake's first lamp design.

The Mendori Lamp is currently featured in MoMA's "Applied Design: From Chairs to Videogames, New Acquisitions in the Design Collection."

Made in Italy from PET fibers sourced from plastic bottles.

One integrated LED bulb included.

Simple assembly required.

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$1,260.

October 10, 2013 at 04:01 PM | Permalink | Comments (0) | TrackBack

Art imitates life: A bug with a gearbox

 

Below, an article from The Economist about the discovery.

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Meshing together rotating gears, such as in a car's gearbox, has long been thought of as a man-made solution to transmitting motion. But rather than a machine being the first to use gears, it seems nature got there earlier. This week young members of a genus of stocky little insects called Issus were shown to use gearing in their legs to hop around plants.

This is believed to be the first observation of mechanical gearing in a biological structure. The discovery was made by a team led by Malcolm Burrows of the University of Cambridge using a combination of anatomical analysis and high-speed video. Their findings, reported in Science, show that the gears in the hind legs of an Issus, which are commonly found hopping around European gardens, have a remarkable similarity to those used in cars and bicycles (below).

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More intriguingly, the gear teeth have rounded corners at the point they mesh—a feature that engineers use in man-made gears as a shock-absorbing function to prevent the gears' teeth from breaking off. The insects' gears are used on their opposing hind legs to lock them together and synchronise movement during powerful jumps (below).

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Without the precision provided by the gears an Issus would spin out of control. The degree of co-ordination would be impossible to achieve with a nervous system alone because the neural impulses would be too slow, says Dr Burrows.

The gears, though, are found only in the insects' juvenile, or nymph, stages, when they cast off rigid skin as they grow. Why the gears disappear by adulthood is not known, but the researchers suspect that it may be similar to a problem that every carmaker faces: if one tooth in the gearbox breaks the whole mechanism is impaired. Perhaps the juvenile Issus can repair a broken gear tooth in one of its regenerative stages, but it would be unable to do that as an adult. Another explanation could be that larger adults develop the equivalent of a bigger thigh bone that provides the power for co-ordinated leaps.

Cog-like structures are found in other animals, but their role has been seen as ornamental rather than functional. Now that mechanical gears have been found in one creature, scientists — and engineers — will look harder to see if they exist in others.

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Below, the abstract of the report in Science alluded to in the story above.

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Gears are found rarely in animals and have never been reported to intermesh and rotate functionally like mechanical gears. We now demonstrate functional gears in the ballistic jumping movements of the flightless planthopper insect Issus. The nymphs, but not adults, have a row of cuticular gear (cog) teeth around the curved medial surfaces of their two hindleg trochantera. The gear teeth on one trochanter engaged with and sequentially moved past those on the other trochanter during the preparatory cocking and the propulsive phases of jumping. Close registration between the gears ensured that both hindlegs moved at the same angular velocities to propel the body without yaw rotation. At the final molt to adulthood, this synchronization mechanism is jettisoned.

October 10, 2013 at 12:01 PM | Permalink | Comments (2) | TrackBack

What is it?

Ggggg

Answer here this time tomorrow.

Hint: smaller than a bread box.

Another: Not intended for Halloween-related use.

A third: External use only. And yes — I'm talking to YOU.

October 10, 2013 at 08:01 AM | Permalink | Comments (10) | TrackBack

Scratch Map of the World

From the website:

Scratch_map-sku_cover

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Track Your Travels

At a glance Scratch Map will tell the world where in the world you've been.

This elegant gold foil map of the world looks great on any wall or surface.

The fun part is with the swipe of a coin — just like a scratch ticket — you can see where you've been.

And there's more: Once you've scratched the surface, colors are revealed and little known facts about the geography of the area you visited are displayed.

This is a great way to document your travels.

It's interactive, informative, and keeps the memories of your journeys intact and in one place.

32.2" x 22.9".

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$24.95.

[via Richard Kashdan]

October 10, 2013 at 12:01 AM | Permalink | Comments (2) | TrackBack

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