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Submission + - UCL Scientists Push 1.125Tbps Through a Single Coherent Optical Receiver

Mark.JUK writes: A team of researchers working in the Optical Networks Group at the University College London in England claim to have achieved the "greatest information rate ever recorded using a single [coherent optical] receiver", which was able to handle a record data speed of 1.125 Terabits per second (Tbps). The result, which required a 15 sub-carrier 8GBd DP-256QAM super-channel (15 channels of data) and total bandwidth of 121.5GHz, represents an increase of 12.5% relative to the previous record (1Tbps). Now they just need to test it using some long fibre optic cable because optical signals tend to become distorted when they travel over thousands of kilometres.

Comment I can probably get that for you (Score 1) 78

I work in R&D for a large company that's been a Cisco Gold level partner for 20-something years. Give me some way to contact you and I can probably ping my buddy over in Sales Engineering and get one in a couple of hours if it's a thing that can be gotten (I don't know the first thing about the hardware side of the house, but my friend went from engineering to sales - 'cause money. Can't blame him for doing less work for more pay. Even if I do... often.).

I probably actually have access, but Cisco's site is a disaster to try to navigate and that's just my small part of their dev site. Believe it or not, still better than Avaya's dev/support site. Legit offer if you want to exchange contact info. A couple people on this site have helped me out over the years and I'm fairly sure this is something that I can take care of with an IM and maybe a beer.

Submission + - First gravitational waves detected

Trax3001BBS writes: "Two black holes that collided 1.3 billion years ago created the waves seen at a new type of space observatory, one located at Hanford in Washington state and the other in Louisiana, officials announced Thursday morning.

In August 2015 the observatories started some initial engineering runs to test equipment and prepare for the official start of observations Sept. 18.

But at 2:50 a.m. Sept. 14 at the Hanford LIGO, an unusual reading was recorded. Just seven-thousands of a second earlier a similar reading had been recorded at the Louisiana LIGO."

http://www.tri-cityherald.com/...

Submission + - Even Einstein doubted his gravitational waves (astronomy.com)

Flash Modin writes: In 1936, twenty years after Albert Einstein introduced the concept, the great physicist took another look at his math and came to a surprising conclusion. “Together with a young collaborator, I arrived at the interesting result that gravitational waves do not exist, though they had been assumed a certainty to the first approximation,” he wrote in a letter to friend Max Born. Interestingly, his research denouncing gravitational waves was rejected by Physical Review Letters, the journal that just published proof of their existence. The story shows that even when Einstein's wrong, it's because he was already right the first time.

Submission + - Gravitational waves spotted for the first time. (sciencemag.org)

NecroBones writes: Long ago, deep in space, two massive black holes—the ultrastrong gravitational fields left behind by gigantic stars that collapsed to infinitesimal points—slowly drew together. The stellar ghosts spiraled ever closer, until, about 1.3 billion years ago, they whirled about each other at half the speed of light and finally merged. The collision sent a shudder through the universe: ripples in the fabric of space and time called gravitational waves. Five months ago, they washed past Earth. And, for the first time, physicists detected the waves, fulfilling a 4-decade quest and opening new eyes on the heavens.

Comment RFTA - this has not been peer reviewed (Score 4, Insightful) 336

Very exciting until you see that the results have not been verified in any way.

If the claim is true, I would be very interested in reading how it was accomplished and what were the conditions. I would be particularly interested in finding out if the heat was contained or if energy was being continually driven into the system.

Claims are just that until verified and the apparatus and results are published.

Comment Re:Umm no (Score 1) 337

It is time to get more real about parallel code. I've been using GoLang allowing me to spin-off a logical "thread" for every action (disregarding context switching limits for OS threads).

The Raspberry Pi has seen considerable development toward optimizing existing software for it, so the desktop went from unworkable to something they pushed as available. I suspect similar efforts will need to be undertaken everywhere, and it'll call into quesiton the 100+ layers of abstraction current business software development practices expect.

Submission + - Grandma's Phone, DSL, and the Copper They Share (hackaday.com)

szczys writes: DSL is high-speed Internet that uses the same twisted pair of copper wire that still works with your Grandmother's wall-mounted telephone. How is that possible? The short answer is that the telephone company is cheating. But the long answer delves into the work of Claude Shannon, who figured out how much data could be reliably transferred using a given medium. His work, combined with that of Harry Nyquist and Ralph Hartley (pioneers of channel capacity and the role noise plays in these systems), brings the Internet Age to many homes on an infrastructure that has been in use for more than a hundred years.

Submission + - CoreOS Launches Rkt 1.0 (eweek.com)

darthcamaro writes: Docker is about to get some real competition in the container runtime space, thanks to the official launch of rkt 1.0. CoreOS started building rkt in 2014 and after more than a year of security, performance and feature improvement are now ready to declare it 'production-ready.' While rkt is a docker runtime rival, docker apps will run in rkt, giving using a new runtime choice.

rkt will remain compatible with the Docker-specific image format, as well as its own native App Container Image (ACI). That means developers can build containers with Docker and run those containers with rkt. In addition, CoreOS will support the growing ecosystem of tools based around the ACI format.


Submission + - Docker 1.10 Brings Linux SECCOMP Security to Containers (eweek.com)

darthcamaro writes: Starting this week, there is a new tool in the toolbox to secure Docker containers. In addition to SELinux (or AppArmor) and Namespaces — Docker 1.10 will now include a default SECCOMP profile. So what's the difference between SECCOMP and SELinux?

SELinux is the list of people you can talk to, while seccomp is the list of what words you can say, McCarty said. As an example, if a person could communicate with another person using only three or five words, it would very much limit what could be expressed and prevent most types of illicit activities, and applies in much the same way to Linux containers, he added.


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