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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 ...

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[11/08/17, via ]
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Minnesota Monthly (blog) [10/12/17, via Minnesota Monthly (blog)]
eyebobs Opens Retail Lab, Debuts Prescription Glasses The company recently opened a "retail lab" located in the lower level of eyebobs' Minneapolis headquarters, where it is also offering prescription eyeglasses and polarized sunglasses for the first time. It all began 18 months ago when Michael When [...]

Vox [08/17/17, via Vox]
Why you absolutely cannot stare at the sun without eclipse glasses, explained You either have to find some eclipse glasses, breaking out some very dark welder's glasses, or use an indirect method — like a pinhole projector (more on that below) — to view the eclipse. Because if you don't, you risk permanent eye damage. So here [...]

Quartz [08/19/17, via Quartz]
What will happen if you look at the solar eclipse without glasses In 1962, a teenager in Oregon named Lou Tomososki and a friend both made the mistake of looking directly at a partial solar eclipse without any protective eyewear. Tomososki saw bursts of light, like those from a flashbulb. His vision in his right eye [...]

WHAS 11.com [07/14/17, via WHAS 11.com]
How to safely watch a solar eclipse without 'burning your eyes out' watch a solar eclipse without 'burning your eyes out' · A solar eclipse explained · Solar eclipse postage stamp uses special ink, changes when touched. Don't go in blind. You're going to need something more powerful than a pair of polarized [...]

I explained to my stepdad why you can't look at it and he said "oh I'll just look at it through my polarized sungla… t.co/8HjyWjxiq3 

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 ... [...]

[07/23/15, 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 ... [...]

[07/21/15, 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 ... [...]

Solar Eclipse Prompts Outdoor Gatherings

NCBI’s Dr. Laks Iyer (l) helps a woman use the telescope he brought to view the eclipse.Even though NIH got only a tad more than 80 percent “obscuration” from the nationwide solar eclipse on Aug. 21, it still became an occasion for outdoor conviviality in all quadrants of campus.As the moon’s shadow invaded the face of the sun at 1:17 p.m.—it cut diagonally across the star’s disk from roughly the 2 o’clock to ...

The Best Cheap Sunglasses

Since every pair of sunglasses we tested provided the full amount of UV protection, we dismissed sunglasses based on other criteria, such as comfort, build quality, and design. All of the sunglasses we tested were 100 percent UV protective, and polarized.Despite having metal hinges, the arms on the Retro Rewind Classic Polarized Sunglasses were difficult to fold and unfold—they produced a strange, vibrating sensation and a creaking noise when we moved them—and these sunglasses...

Super Cruising Across Middle America With Cadillac

Sam Abuelsamid2018 Cadillac CT6 with Super CruiseAutomated driving is pretty much at peak hype right now. Startups are popping up all over Silicon Valley with founders that want to be the next Elon Musk and funding from venture capitalists hoping for their next big exit. Along with all of these new aspirants we have the incumbent automakers developing both highly automated driving systems and semi-automated driver assist systems like Tesla’s Auto Pilot and Volvo’s Pilot Assist. The newest of...