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24735 |
duddy |
9 years ago |
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8540 |
duddy |
9 years ago |
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duddy |
9 years ago |
This knife can cut a water droplet in half!
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It's called a superhydrophobic knife and it slices water droplets easier than a butter-knife cuts through butter. As its name suggests, anything that is 'superhydrophobic' is highly hydrophobic, i.e., extremely difficult to wet. This special knife uses polyethylene - a common plastic - zinc, and copper. Its surfaces was dipped into a solution of silver nitrate and a superhydrophobic solution called HDFT for 20 seconds, and once it was washed and air-dried, it was super-great at repelling water.
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10694 |
duddy |
9 years ago |
The truth about redheads
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Did you know red-heads have an evolutionary advantage in cloudy regions of the world, and they have a lower tolerance for pain than the rest of us?
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94003 |
duddy |
9 years ago |
The African Renaissance Monument
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I bet you've never seen this statue before. Neither had I until today. It's "The African Renaissance Monument" in Dakar, Senegal. The monument stands at a height of approximately 49 meters (160 feet), including its base, making it one of the tallest statues globally. It was designed by Senegalese architect Pierre Goudiaby Atepa and was built by a North Korean company. The statue was inaugurated on April 4, 2010, during Senegal's 50 th independence anniversary celebration, and symbolizes Africa's emergence from a history of colonization and oppression and its progress toward a brighter future. ...
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104501 |
duddy |
9 years ago |
Tails designed to fool
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The green wings of luna moths, with their elegant, long tails, aren't just about style. New research finds they also help save the insects from becoming bat snacks by creating a distracting acoustic signal, which causes these predators to zero in on the wings rather than more vital body parts.
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15586 |
duddy |
9 years ago |
Super large snow flakes spotted all over New York City
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These snowflakes were spotted all over New York City. Meteorologist Chris Dolce explained that all of these sightings are due to the specific way they've fallen: If snowflakes stay separated from each other like you see in these photos, and if you look closely enough, you can sometimes see the structure of snowflakes with your naked eye.
There are many different types of crystal patterns and these star-shaped snowflakes are just one example. The dendrite, a star-shape with varying patterns, is the most common shape of a snowflake. ...
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10687 |
duddy |
9 years ago |
Sunlight continues to damage skin even after dark
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Researchers have discovered that sun exposure gives skin cells a postsunshine hangover that lasts for hours. In fact, UV rays damage skin cells for hours after you've stepped out of the sun - and even if you're in complete darkness!
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15480 |
duddy |
9 years ago |
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31911 |
duddy |
9 years ago |
Some people simply get away with more because of their look
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Which of these faces looks more trustworthy to you? Science says that some people just get away with more stuff, because they have more trustworthy looking faces. A trustworthy face, as psychologists have determined over years of research in this area, has two major characteristics: The eyebrows are slightly lifted, so that together, they form a kind of upside-down V shape; likewise, the corners of the mouth are also lifted slightly. An untrustworthy face, on the other hand, is the opposite: The eyebrows point slightly downward, forming a V shape, and the corners of the mouth are turned down a bit, too. Source: http://nymag.com/scienceofus/2015/01/some-faces-just-get-away-with-stuff.html ...
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29951 |
duddy |
9 years ago |
She developed the building blocks for modern 'software engineering'
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Margaret Hamilton was the leader of the team that developed the flight software for the agency's Apollo missions. The concepts she and her team created became the building blocks for modern 'software engineering.' One example of the value of Hamilton's software work occurred during the Apollo 11 mission. Approximately three minutes before Eagle's touchdown on the moon, the software over rode a command to switch the flight computer's priority processing to a radar system whose 'on' switch had been manually activated due to a faulty written operations script provided to the crew. The action by the software permitted the mission to safely continue. Source: http://history.nasa.gov/alsj/a11/a11Hamilton.html ...
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20981 |
duddy |
9 years ago |
Poor mice have no private life
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With its exceptional hearing, a red fox can target a mouse hidden under two feet of crusted snow. Springing high in the air, it can break through the crusted spring snow with its nose and body completely vertical under the snow.
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31680 |
duddy |
9 years ago |
Pine cones the size of melons!
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The Australian Bunya pine drops pine cones that are the size of melons. The cones are 20–35 cm in diameter, and are opened by large birds, such as cockatoos, or disintegrate when mature to release the large (3–4 cm) seeds or nuts.
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27883 |
duddy |
9 years ago |
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25042 |
duddy |
9 years ago |