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How Do Polarized Sunglasses Work?

Quick Questions takes you on a trip with a photon to explain what polarized light is, and how some sunglasses can filter it out to spare you the glare. ---------- Like ...

News & Reviews

[11/09/18, via ]
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Metro [11/08/18, via Metro]
These screen-blocking glasses are the perfect antidote to 2018 life 'By flattening and rotating the polarized lens 90 degrees, light emitted by LCD/LED screens is blocked, making it look like the TV or computer in front of you is off,' explain the team on their Kickstarter page. At the moment, the prototype glasses are [...]

Economic Daily Gazette (press release) [11/08/18, via Economic Daily Gazette (press release)]
Global Polarized Sunglasses Market Research 2018-2025: RayBan, Oakley, Maui jim, Persol, Prada, Gucci, Versace ... The performance of the related key participants, suppliers, and vendors is furthermore explained in the global Polarized Sunglasses market report. It also underscores the restraints and drivers keenly from the prudent perceptive of our specialists [...]

EurekAlert (press release) [10/17/18, via EurekAlert (press release)]
Montana State professor receives international award for optics research Seeking to better understand and apply light polarization -- a phenomenon commonly experienced by people wearing glare-reducing polarized sunglasses -- has been "the driving question at the core of my work over the years," Shaw said. Light is said to [...]

Technology Gazette [11/05/18, via Technology Gazette]
Global Polarized Sunglasses Market 2018-23: RayBan, Prsr, Bolon, OYEA, Polaroid Eyewear, Blue Point The report evaluates the latest trends, hurdles, challenges, prospective growth, driving factors, competitive stance, opportunities, and market environment of Polarized Sunglasses industry. The report aims to discover technological improvements and [...]

RT @NESTA_US: Polarized sunglasses stop UV radiation by small, parallel, equally placed scratches on sunglasses, limiting the amount of vis…

RT @NESTA_US: Polarized sunglasses stop UV radiation by small, parallel, equally placed scratches on sunglasses, limiting the amount of vis…

Polarized sunglasses stop UV radiation by small, parallel, equally placed scratches on sunglasses, limiting the amo… t.co/v1ek1FvuSN 

Second Guessing God Second Guessing God
Published by Standard Publishing 2016
ISBN 0784718415,9780784718414
221 pages
A-level Physics A-level Physics
Published by Nelson Thornes 1993
ISBN 0748715843,9780748715848
953 pages
Practical Holography, Third Edition Practical Holography, Third Edition
Published by CRC Press 2003
ISBN 9781420033663,1420033662
482 pages
Science in Seconds Science in Seconds
Published by Quercus 2013
ISBN 9781623650070,1623650070
416 pages

Drita D'avanzo Karen Gravano Mob Wives Fight—Brittany Fogarty ... - RadarOnline

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In the wake of Angela “ Big Ang ” Raiola ‘s death, Mob Wives has continued on —and with it, the never-ending drama between Drita D’avanzo and Karen Gravano . During the series finale on March 9, the woman had one final on-screen battle, only to... “I think if we weren’t on a show, it would be settled in real life,” their costar Brittany Fogarty told RadarOnline. “I think that you keep seeing the drama between Drita and Karen and there’s these fights, but they’re never really fights. “We have this entire crew around us when this fight is happening, and there’s security holding us down and separating us and holding us apart from each other,” she explained. “So in real life, I think Drita would have beat the s*** out of her already.

[via radaronline.com]

Why changing your password regularly may do more harm than good - Washington Post

Photo by jakeline on Flickr

Most office drones have had to deal with a job that requires them to keep changing their passwords like clockwork, maybe every six months or so. The longstanding IT security practice is based on the idea that flushing out old passwords will cut... "Unless there is reason to believe a password has been compromised or shared, requiring regular password changes may actually do more harm than good in some cases," Cranor wrote Wednesday in a blog post entitled "Time to rethink mandatory password... [ These are the worst passwords of 2015 ]. That's because forcing people to keep changing their passwords can result in workers coming up with, well, bad passwords. It found that users who felt the institution's password policy was annoying came up with passwords that were 46 percent more likely to be guessed than those who supported frequent password changes.

[via www.washingtonpost.com]

[02/15/16, via WRCB 3 Chattanooga]
Fello Eyewear Crafted in California, With a Vision to Help the World February 15, 2016 – Fello Eyewear is currently preparing to launch a Kickstarter campaign to raise funds they need to produce their new line of American made, polarized sunglasses. These sunglasses are manufactured using premium materials and will be ... [...]

[12/02/15, via R & D Magazine]
Polarized Protons Uncover Secrets Changing that direction and colliding different combinations of these spin-polarized proton ... those in the other," explained Wolfram Fischer Accelerator Division Head for Brookhaven's Collider-Accelerator Department. "Electron lenses use the attractive ... [...]

[08/01/15, via Ludington Daily News]
Want a chance to win a pair of Costa Del Mar sunglasses? I’ve used polarized sunglasses for about 40 years now to ... At the end of this article, we’ll have information on how you can win your own pair of Costa Del Mar sunglasses. Whitmill explained that the different lens colors and mirror colors make ... [...]

[07/22/15, via Universe Today]
New “Sunglasses” Help Astronomers See Light Near Black Holes Since scattered light is polarized, astronomers can use a filter that works like polarized sunglasses on large telescopes to detect this small amount of scattered light and measure it with unprecedented accuracy. Scientists have theorized these luminous ... [...]

[07/20/15, via KOIN-TV]
Doctor: Protect your eyes from UV rays this summer A pair of polarized sunglasses displayed at Portland’s Casey Eye Institute. (KOIN) “There is a cumulative effect of UV light damage throughout a person’s life,” Dr. Clements explained. “So those years during childhood, those count toward later in ... [...]

Fast Radio Burst Source Linked to Extreme Magnetic Environment

Using the Arecibo Observatory in Puerto Rico and the Green Bank Telescope in West Virginia, astronomers have gained new insight into the extreme home of a mysterious source of so-called fast radio bursts (FRB). According to the team, radio waves from the recently-discovered repeating FRB, named FRB 121102, are 100% linearly polarized, indicating that they come from an extragalactic source embedded in a strong magnetic field, like that around a massive black hole at the center of a galaxy.The...

Fast radio bursts: A mystery unfolds

Artist’s concept of radio waves from a fast radio burst, being observed by the Green Bank Telescope in West Virginia.Astronomers reported today (January 10, 2018) at the winter meeting of the American Astronomical Society (AAS) in Washington, D.C. on their recent studies of a mysterious source of fast radio bursts – three billion light-years away – known as FRB 121102. They said the source of the bursts must be:… in an astonishingly extreme and unusual environment. This discovery suggests...

FRB 121101: Have Scientists Solved the Mystery of Repeating Radio Signals From Deep Space?

Billions of light-years away, short, sharp radio signals ripple through deep space. Lasting only a fraction of a second, most play out alone. Just one of these fast radio bursts has been found to flash again and again: FRB 121102. Now, scientists might have figured out the physical source of this mysterious extragalactic beep.Published in Nature, results show the signals might emanate from a neutron star in an extreme environment of "unprecedented” power. It could be sitting near a...