Halloween party ideas 2015

Earth's magnetic field is pretty adept at flipping polarity. The poles have swapped, reversing north and south, many times over the planet's history.

Within the last 20 million years, Earth has fallen into the pattern of pole reversal every 200,000 to 300,000 years, and between successful swaps, the poles sometimes even attempt to reverse and then snap back into place.
About 40,000 years ago, the poles made one such unsuccessful attempt, and the last full swap was about 780,000 years ago, so we're a bit overdue for a pole reversal based on the established pattern.
The planet's magnetic field is already shifting, which could signify the poles are preparing to flip, and while we can't yet confirm that a reversal is on the near horizon, it is well within the realm of possibility.
While a pole reversal isn't entirely uncommon when you consider Earth's history, this time it could have serious implications for humanity.
To try to determine whether or not a flip is imminent, scientists have begun using satellite imagery and complex calculations to study the shifting of the magnetic field.
They've found that molten iron and nickel are draining energy from the dipole at the edge of the Earth's core, which is where the planet's magnetic field is generated.
They also found that the north magnetic pole is especially turbulent and unpredictable. If the magnetic blocks become strong enough to sufficiently weaken the dipole, the poles will officially switch.
Again, while it is not a certainty that the switch will happen soon, this activity at the Earth's core suggests that it is possible in the near future. So, how might a pole switch impact our lives?
The Earth's magnetic field protects the planet from solar and cosmic rays. When the poles switch, this protective shield could diminish to as little as one-tenth of its typical ability.
The switching process could take centuries, and the entire time, radiation would be able to get closer to the planet than usual.
Eventually, this radiation could reach the surface of the Earth, rendering some regions uninhabitable and causing entire species to go extinct.
Before that happened, though, a weakened magnetic field would likely impact orbiting satellites, which have suffered from memory failure and other damagewhen exposed to such radiation in the past.
Damage to satellites caused by decreased protection from the magnetic field could affect the satellite timing systems that control electric grids.
These grids could fail, leading to worldwide blackouts that experts predict could last for decades.
Without functioning electric grids, we couldn't use cell phones, household appliances, and so much more. The sudden blackouts would have hospitals scrambling for backup power sources, putting countless lives at risk.
GPS technology would also be compromised, affecting everything from military operations to our ability navigate our cars.
Additionally, we are becoming more reliant on technology by the day, with autonomous vehicles, artificial intelligence (AI), and other innovations all advancing rapidly.
By the time a pole switch did take place, these innovations could be a regular part of our daily lives, furthering the potential for disruption.
It's true that we live in an age where data rules all. From how we communicate to how we get around to how our governments and critical facilities run, it all comes down to how we send and store data, so if the world's satellites are damaged or rendered nonfunctional, life as we know it could forever change.
But this isn't a doomsday prediction. While the poles will inevitably flip again at some point, our ability to recognise this possibility in advance allows us to prepare for it.
For starters, satellite companies can begin to collaborate, sharing ideas with one another on how to equip satellites to deal with a pole reversal.
Government and university researchers can focus their efforts on developing new satellites specifically designed to withstand extreme radiation and space weather.
Governments, businesses, and communities can come together to form action plans.
They can find ways to store energy and ensure the public is educated on the subject of pole reversal, so that when it happens, the situation won't cause widespread panic.
Earth's poles have been switching for millions of years, and they will continue to do so for the foreseeable future. The best thing we can do is prepare now so we're ready the next time it happens.

Hyperloop Transportation Technologies has started assembling its tubes

We haven’t heard much from Hyperloop Transportation Technologies since last year, when the California-based company released a handful of images and a video to prove that it is building what it says is the world’s first full-scale, passenger-ready hyperloop. Today, the company has broken its silence with the announcement that it’s begun construction of a kilometer-long test track near its R&D center in France.
HyperloopTT says its test track will be built in two phases: a closed 320-meter system that will be operational this year, and a 1 kilometer long full-scale system, elevated by pylons at a height of 5.8 meters, to be completed in 2019. A full-scale passenger capsule, currently under construction at the company’s facility in Spain, is scheduled for delivery this summer.
That would make it the world’s third hyperloop test track to date, and the first in Europe. The other two are in the US: Virgin Hyperloop One’s test track is located in the desert north of Las Vegas, while Elon Musk’s track is sited outside SpaceX’s headquarters in Hawthorne, Calif.
The video and images of HyperloopTT’s track under construction is the first solid evidence that the company is actually pursuing its goal of building a full-scale, passenger-ready hyperloop capable of sending capsules of people or cargo flying through a nearly airless tube at a hypothetical speed of 760 mph. Previously, all we’ve seen from the company is a few random images and some dubious sounding announcements.
By contrast, its crosstown rival, Virgin Hyperloop One has conducted three demonstrations of its not-to-scale system in the desert outside of Las Vegas, most recently hitting a record speed of 240 mph (387 km/h). The company has deals with governments in Dubai and Saudi Arabia — as well as a plethora of leadership churn. And SpaceX has held several versions of its design and engineering competition, with student-led teams also achieving 200-mph speeds.
HyperloopTT is less a traditional business than a elaborate crowdfunding campaign. The company boasts that it is a solely volunteer and crowdsourced venture, with talent from NASA, Boeing, Tesla, and SpaceX working among its 800-plus volunteers. HyperloopTT has run into bureaucratic hurdles. Its test track in California was delayed after it was revealed the company failed to complete the state’s environmental review process. With the company shifting most of its focus to Europe, it’s unclear whether HTT’s California property is still in the mix.
source -theverge

Disorders of the brain are difficult to treat, as medications can't be delivered to only the parts of the brain that need them. That could soon change thanks to a new system developed at MIT, which uses a hair-sized needle to directly deliver medicine to specific parts of the brain.


Researchers from MIT have created a system that can deliver medicine directly to areas of the brain as small as one cubic millimeter. Using a needle the size of a human hair, the system could make it possible to directly treat diseases affecting the brain through specific circuits or regions without injuring or interacting with other nearby areas. The study has been published in the journal Science Translational Medicine.
The ultra-thin needle contains tubes that can deliver drugs deep into the brain. All of the components used are very fine, which gives the doctor performing the procedure as much control as possible in terms of placement and depth of the needle, as well as how much medication is dispensed. The researchers tested the technology on rats and were successfully able to deliver a dose of medication to a specific region of the brain that affected the rat’s motor function.
This miniature system could greatly improve the treatment of brain disorders. Image Credit: Canan Dagdeviren/Massachusetts Institute of Technology
This miniature system could greatly improve the treatment of brain disorders. Image Credit: Canan Dagdeviren/Massachusetts Institute of Technology
“We can infuse very small amounts of multiple drugs compared to what we can do intravenously or orally, and also manipulate behavioral changes through drug infusion,” Canan Dagdeviren, an Assistant Professor at MIT and lead author of the paper, said in MIT’s press release.


The MIT researchers were not only able to successfully administer drugs to extremely specific locations, they were also able to inject a separate dose of saline to wash the drug away, which gave them maximum control when it came to dosing.
The ability to directly administer drugs to the brain could not only lead to new treatments but markedly improve existing ones. Many drugs currently used to treat brain disorders and disease often come with a host of side effects, largely because the drugs can affect regions of the brain other than what the drug was designed to treat.
“We believe this tiny microfabricated device could have a tremendous impact in understanding brain diseases,” said Robert Langer, a professor at MIT and one of the paper’s senior authors, “as well as providing new ways of delivering biopharmaceuticals and performing biosensing in the brain.”

odd pictures, odd things that happened in 2017, 2017 odd pictures, weird things in 2017, weird pictures 2017, Indian express, Indian express news

Powered by Blogger.