Circular Beam of Electrons

Beam of electrons moving in a circle, due to the presence of a magnetic field. Purple light is emitted along the electron path, due to the electrons colliding with gas molecules in the bulb. (Photo: Marcin Bialek ) Oh, how I love you guys. In our recent post A Fiery Dance on the Sun , Neatoramanaut PlasmaGryphon kindly took the time to explain to us the physics behind solar flares. In the explanation , there was a link to Wikipedia article on Lorentz force , where I found this fascinating image of a circular beam of electrons in a Teltron tube . Neat, huh? ( Thanks PlasmaGryphon! )

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Circular Beam of Electrons

Bees Can See the Electric Field of Flowers

Flowers are pretty and colorful to you and me, but to a bee, they’re downright electrifying. You see, bees can sense the electric field that surrounds a flower: Dominic Clarke and Heather Whitney from the University of Bristol have shown that bumblebees can sense the electric field that surrounds a flower. They can even learn to distinguish between fields produced by different floral shapes, or use them to work out whether a flower has been recently visited by other bees. Flowers aren’t just visual spectacles and smelly beacons. They’re also electric billboards. Learn how a flower’s electric field is actually also useful for bees as it tells them whether other bees have visited it before. Ed Yong of Not Exactly Rocket Science explains: Link

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Bees Can See the Electric Field of Flowers

Office Depot and OfficeMax to Merge

Well, at least they don’t have to change the first part of their names! The Wall Street Journal reported that OfficeMax and Office Depot are merging: OfficeMax Inc. and Office Depot Inc. are in advanced talks to merge, people familiar with the matter said, as the retailers of pens, paper and desks try to fight off tougher competition from rivals like Staples Inc. and Amazon.com Inc. A deal would combine two companies that have been hammered in recent years by weak economic conditions, falling sales and rising online competition. Office Depot’s market value is just $1.3 billion, and OfficeMax’s is about $933 million. Still, the two chains have a substantial retail presence. Office Depot, based in Boca Raton, Fla., has 1,675 stores world-wide, annual sales of some $11.5 billion and about 39,000 employees. OfficeMax, based in Naperville, Ill., has about 900 stores in the U.S. and Mexico, roughly $7 billion in annual sales and approximately 29,000 employees. OfficeMax is scheduled to post its quarterly and annual results Thursday. Link What do you think we should call the new entity?

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Office Depot and OfficeMax to Merge

Medieval Cat Paw Prints

Does your cat walk all over your desk? It’s’ nothing new, cats have been walking all over humans since, like, forever as this photo from Emir O. Filipovic of the University of Sarajevo’s History Department shows. Emir was working on a 15th century manuscript when he ran across this medieval cat paw prints: Link – via The Weasel King

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Medieval Cat Paw Prints

Hotel Het Arresthuis: Jail Turned Into Luxury Hotel

Most hotels have bars, but you’re probably not thinking of these ones on the window. The Hotel Het Arresthuis in the Netherlands was actually a jail that was converted into a luxury hotel. Now this is one jailhouse we don’t mind checking into! Take a look.

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Hotel Het Arresthuis: Jail Turned Into Luxury Hotel

People of Timbuktu save Manuscripts from Invaders

The Ahmed Baba Institute of Higher Learning and Islamic Research in Timbuktu, Mali, holds a collection of 30,000 of the world’s most precious ancient manuscripts. Or it did until recently. On January 23rd, al-Qaida-linked extremists, who invaded Timbuktu almost a year ago, ransacked the library and set it on fire. The fire raged for eight days straight. What the extremists did not know was that only about 2,000 of the hand-written documents had been moved to the new library building. However, they didn’t bother searching the old building, where an elderly man named Abba Alhadi has spent 40 of his 72 years on earth taking care of rare manuscripts. The illiterate old man, who walks with a cane and looks like a character from the Bible, was the perfect foil for the Islamists. They wrongly assumed that the city’s European-educated elite would be the ones trying to save the manuscripts, he said. So last August, Alhadi began stuffing the thousands of books into empty rice and millet sacks. At night, he loaded the millet sacks onto the type of trolley used to cart boxes of vegetables to the market. He pushed them across town and piled them into a lorry and onto the backs of motorcycles, which drove them to the banks of the Niger River. From there, they floated down to the central Malian town of Mopti in a pinasse, a narrow, canoe-like boat. Then cars drove them from Mopti, the first government-controlled town, to Mali’s capital, Bamako, over 600 miles (1,000 kilometers) from here. “I have spent my life protecting these manuscripts. This has been my life’s work. And I had to come to terms with the fact that I could no longer protect them here,” said Alhadi. “It hurt me deeply to see them go, but I took strength knowing that they were being sent to a safe place.” It took two weeks in all to spirit out the bulk of the collection, around 28,000 texts housed in the old building covering the subjects of theology, astronomy, geography and more. The 2,000 documents that were in the new library were digitized, so the information survives even if the parchment does not. Link -via Metafilter (Image credit: AP/Harouna Traore)

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People of Timbuktu save Manuscripts from Invaders

Fire and Ice: Firefighter’s Water Froze on a Blazing Building

Photo: John J. Kim/Chicago Tribune How cold was it in Chicago? Let’s put it this way: it was so cold that when firefighters fought the fire in a blazing abandoned warehouse, the water froze while the building was still on fire! The Chicago Tribune has the photo gallery that you simply must see: Link – via Metafilter

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Fire and Ice: Firefighter’s Water Froze on a Blazing Building

Beautiful, Fragile Nudibranchs Can Kill You

If you’re hungry while on the ocean floor, don’t chow down on these fellows, no matter how tasty they look. The Chromodoris annae, like many nudibranchs, is soft, colorful and poisonous. Wildlife photographer David Doubilet took photos of many different species. You can view more pictures at the link. Link -via It’s Okay to Be Smart | Photo: David Doubilet

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Beautiful, Fragile Nudibranchs Can Kill You

Startup Companies Replace “Casual Fridays” with “Formal Fridays”

Silicon Valley’s startup corporate culture is noted for its downscale fashion and manners: flip-flops, office games and casual decor. If that’s the norm, how do you handle casual Fridays? How do you impress others as a nonconformist? By dressing up formally, often with bowties and a tophats: The trappings of a nonconformist workplace were on display recently at the headquarters of a startup here named Pulse: There was the foosball table, the containers of free M&Ms, the bottle of whiskey on top of the fridge. And the guys standing around in suits and ties. It was Friday, after all, and to truly defy conformity at some tech outfits on that day of the week, one must not wear jeans or flip-flops. Pulse employees were practicing “Formal Friday,” dressing in their Sunday best. “It is kind of flipped…because we’re super casual the entire week,” says Akshay Kothari, co-founder of Pulse, a startup that makes a news-organizing app. “You want to break the monotony.” Watch a video at the link, then go buy a bolo tie for next Friday. Because bolo ties are cool. Link -via Glenn Reynolds  | Photo: Spark Fun Electronics

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Startup Companies Replace “Casual Fridays” with “Formal Fridays”