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Whistling At Your Mom

January 31, 2015 — Leave a comment

By: MetaSpoon
Source: http://ift.tt/1zQiSpd

Funny yet disturbing video of sexual harassment in Lima

Three Shop Upgrades

January 25, 2015 — Leave a comment

By: frank howarth
Source: http://ift.tt/1z8dCh4

I have been cleaning up the shop. In this process, I have made a few shop upgrades. The first project is lowering the bottom shelf and putting on new wheels on the worktable. The new wheels will take more weight. The lower shelf will allow me it store the pantorouter on it. The second project is making a new foot for the grinder stand I built last Fall. I pulled off the leveling feet I had on there and attached a single piece of 2 inch angle iron. This looks a lot better. The third project is to demonstrate some of the alternate uses of the new shop stair. One is to use it as a step stool the reach higher places in the shop. Another is to use it as a platform for bringing heavy items into the shop.

Shop Stair
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Wood Turning Grinder Stand
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By: UniversityRochester
Source: http://ift.tt/1xVytNt

Scientists at the University of Rochester have used lasers to transform metals into extremely water repellent, or super-hydrophobic, materials without the need for temporary coatings.

Super-hydrophobic materials are desirable for a number of applications such as rust prevention, anti-icing, or even in sanitation uses. However, as Rochester’s Chunlei Guo explains, most current hydrophobic materials rely on chemical coatings.

In a paper (http://ift.tt/1BbZSPO) published today in Journal of Applied Physics, Guo and his colleague at the University’s Institute of Optics, Anatoliy Vorobyev, describe a powerful and precise laser-patterning technique that creates an intricate pattern of micro- and nanoscale structures to give the metals their new properties. This work builds on earlier research by the team in which they used a similar laser-patterning technique that turned metals black (http://ift.tt/1BzlR5V). Guo states that using this technique they can create multifunctional surfaces that are not only super-hydrophobic but also highly-absorbent optically.

Guo adds that one of the big advantages of his team’s process is that “the structures created by our laser on the metals are intrinsically part of the material surface.” That means they won’t rub off. And it is these patterns that make the metals repel water.

“The material is so strongly water-repellent, the water actually gets bounced off. Then it lands on the surface again, gets bounced off again, and then it will just roll off from the surface,” said Guo, professor of optics at the University of Rochester. That whole process takes less than a second.

The materials Guo has created are much more slippery than Teflon—a common hydrophobic material that often coats nonstick frying pans. Unlike Guo’s laser-treated metals, the Teflon kitchen tools are not super-hydrophobic. The difference is that to make water to roll-off a Teflon coated material, you need to tilt the surface to nearly a 70-degree angle before the water begins to slide off. You can make water roll off Guo’s metals by tilting them less than five degrees.

As the water bounces off the super-hydrophobic surfaces, it also collects dust particles and takes them along for the ride. To test this self-cleaning property, Guo and his team took ordinary dust from a vacuum cleaner and dumped it onto the treated surface. Roughly half of the dust particles were removed with just three drops of water. It took only a dozen drops to leave the surface spotless. Better yet, it remains completely dry.

Guo is excited by potential applications of super-hydrophobic materials in developing countries. It is this potential that has piqued the interest of the Bill and Melinda Gates Foundation, which has supported the work.

“In these regions, collecting rain water is vital and using super-hydrophobic materials could increase the efficiency without the need to use large funnels with high-pitched angles to prevent water from sticking to the surface,” says Guo. “A second application could be creating latrines that are cleaner and healthier to use.”

Latrines are a challenge to keep clean in places with little water. By incorporating super-hydrophobic materials, a latrine could remain clean without the need for water flushing.
But challenges still remain to be addressed before these applications can become a reality, Guo states. It currently takes an hour to pattern a 1 inch by 1 inch metal sample, and scaling up this process would be necessary before it can be deployed in developing countries. The researchers are also looking into ways of applying the technique to other, non-metal materials.

Guo and Vorobyev use extremely powerful, but ultra-short, laser pulses to change the surface of the metals. A femtosecond laser pulse lasts on the order of a quadrillionth of a second but reaches a peak power equivalent to that of the entire power grid of North America during its short burst.

Guo is keen to stress that this same technique can give rise to multifunctional metals. Metals are naturally excellent reflectors of light. That’s why they appear to have a shiny luster. Turning them black can therefore make them very efficient at absorbing light. The combination of light-absorbing properties with making metals water repellent could lead to more efficient solar absorbers – solar absorbers that don’t rust and do not need much cleaning.

Guo’s team had previously blasted materials with the lasers and turned them hydrophilic, meaning they attract water. In fact, the materials were so hydrophilic that putting them in contact with a drop of water made water run “uphill” (http://ift.tt/1EpsB4R).

By: Candide Thovex
Source: http://ift.tt/1C59jCe

Candide Thovex having another one of those days in his home resort.

*IMPORTANT
Please only use and share this embed code of the official video.
Third party downloads and distribution is not permitted.

Filmed in Val Blanc, France.

For medias requests, please contact
jasper@candidethovex.com

Follow Candide on
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Instagram & Twitter: @candidethovex

To buy Candide products, go to:
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Watch the first One of those days
http://ift.tt/1ByFB8D

©Copyright Candide Thovex

By: Cory Tichenor
Source: http://ift.tt/1BS7JUs

I take a couple of cheap plastic travel mugs from a discount store and turn them into an awesome set of segmented wooden travel / coffee mugs. The woods used are Canary wood and Wenge and finished with Tung oil varnish. Enjoy, Share, Comment and Please subscribe Thank you !

By: Ford Hallam
Source: http://ift.tt/1vVOZwZ

A short documentary film that follows classical Japanese metal artist Ford Hallam as he recreates a lost masterpiece by the 19th century Mito tsuba artist, Hagia Katsuhira. The project and filming was funded by Mr Bob Morrison and took place from June to October 2009.

Filmed and directed by Brad Schaffer
http://ift.tt/1xpzj9D

Produced by Richard Moerdyk and Fixer Film
http://ift.tt/1vVOVNL

For more details about the project please visit my blog spot here;
http://ift.tt/1vVOXW1

To learn more about the techniques of classical Japanese decorative metalwork please visit our forum;
http://ift.tt/1vVOVNP

We also have available for download text files of the audio in French, Portuguese, Spanish, Italian, Greek and German.
You’ll find them on our forum here;
http://ift.tt/1xpzjq0

To see more of Ford’s work please visit http://fordhallam.com/

By: Ford Hallam
Source: http://ift.tt/1vVOVxw

A short documentary film that follows classical Japanese metal artist Ford Hallam as he recreates a lost masterpiece by the 19th century Mito tsuba artist, Hagia Katsuhira. The project and filming was funded by Mr Bob Morrison and took place from June to October 2009.

Filmed and directed by Brad Schaffer
http://ift.tt/1xpzj9D

Produced by Richard Moerdyk and Fixer Film
http://ift.tt/1vVOVNL

For more details about the project please visit my blog spot here;
http://ift.tt/1vVOXW1

To learn more about the techniques of classical Japanese decorative metalwork please visit our forum;
http://ift.tt/1vVOVNP

We also have available for download text files of the audio in French, Portuguese, Spanish, Italian, Greek and German.
You’ll find them on our forum here;
http://ift.tt/1xpzjq0

To see more of Ford’s work please visit http://fordhallam.com/