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Cosmology in Culture & Astrology in Academia

Month: June, 2012

ZAGGblog round-up: June 29, 2012

zaggdaily:

This $650 iPhone case has a high-grade headphone amp, a digital-to-analog converter, and a battery pack

For $160 you can own these jeans that allow you to use your iPhone while it’s in your pocket

Apple’s New Employee Discount Is Now Active

10 Things Your Grandchildren Won’t Recognize

If you’re bored, here’s a DIY iPad stand out of cardboard

#myphone

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Scientists Create Wi-Fi That Can Transmit Seven Blu-ray Movies Per Second

kateoplis:

American and Israeli researchers have used twisted vortex beams to transmit data at 2.5 terabits per second. As far as we can discern, this is the fastest wireless network ever created — by some margin. This technique is likely to be used in the next few years to vastly increase the throughput of both wireless and fiber-optic networks.

These twisted signals use orbital angular momentum (OAM) to cram much more data into a single stream. In current state-of-the-art transmission protocols (WiFi, LTE, COFDM), we only modulate the spin angular momentum (SAM) of radio waves, not the OAM. If you picture the Earth, SAM is our planet spinning on its axis, while OAM is our movement around the Sun. Basically, the breakthrough here is that researchers have created a wireless network protocol that uses both OAM and SAM. 

In this case, Alan Willner and fellow researchers from the University of Southern California, NASA’s Jet Propulsion Laboratory, and Tel Aviv University, twisted together eight ~300Gbps visible light data streams using OAM. Each of the eight beams has a different level of OAM twist. The beams are bundled into two groups of four, which are passed through different polarization filters. One bundle of four is transmitted as a thin stream, like a screw thread, while the other four are transmitted around the outside, like a sheathe. The beam is then transmitted over open space (just one meter in this case), and untwisted and processed by the receiving end. 2.5 terabits per second is equivalent to 320 gigabytes per second, or around seven full Blu-ray movies per second.

This huge achievement comes just a few months after Bo Thide finally proved that OAM is actually possible.

Read on.

Faster than the speed of interwebs

Scientists Create Wi-Fi That Can Transmit Seven Blu-ray Movies Per Second

Hipsters Under Control: The End of Subculture?

npr:

“The Big Data collectors (Facebook, Amazon, Google, etc.) are so good at spotting the development of subcultures that soon, Venkat says, they will be creating and controlling them for their own (or their clients) market exploitation.”

Just make sure you throw in enuF “hip-hop” for street cred.

Hipsters Under Control: The End of Subculture?

Japan sells first fish caught since nuclear crisis YURI KAGEYAMA, ap.org TOKYO (AP) — The first seafood caught off Japan’s Fukushi­ma coast­line since last year’s nuclear dis­as­ter went on sale Mon­day, but the offer­ings were lim­it­ed to octo­pus and marine snails because of per­sist­ing fears about… Fresh Fish

Katana Sword by Bizen-no-kuni Masashirothefancy.com by S__R__D TheFancy.com

Follow Rio+20 Online Brian Clark Howard, nationalgeographic.com I’ve been pack­ing my bags and try­ing to clear out my inbox, because I’m off to Brazil tomor­row in antic­i­pa­tion of the UN Con­fer­ence on Sus­tain­able Devel­op­ment (June 20-22). I’ll be post­ing updates on our Sus­tain­able Earth hub, so lo… #RIO+20

13 party hostels in South America Josh Heller, matadornetwork.com Photo: blmurch You’ve spent the last sev­er­al months chas­ing the party across the entire con­ti­nent. 1. Milhouse Hostel – Buenos Aires, Argentina You’d heard about the Mil­house since at least Salta. Every­one you met on the gringo trail… Hmm. One travellers party is another’s spring break.

#Oregon #nofilter #sweetpeas (Taken with Instagram at Eastwood Cemetery)

Moon, Jupiter and Venus line up before sunrise June 16 Bruce McClure, earthsky.org The wan­ing cres­cent moon and the bril­liant plan­ets Jupiter and Venus line up in the east tomor­row, to grace the morn­ing twi­light on Sat­ur­day, June 16, 2012. Whether you see this celes­tial line-up from the North­ern Hemi­sphere or the… #NakedEyeAstronomy

5 Things to Consider Before Self-Publishing Your Book Matt Petronzio, mashable.com So, you’re final­ly dust­ing off that 300-page man­u­script and get­ting into the self-publishing game. It can be an excit­ing and reward­ing ven­ture, but before you get start­ed, it’s a good idea to learn as much as you can about what’s avail­ab…