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Eric Whitehead
Works at inVision Collaborative
Attended Wheaton College
Lives in Columbus, OH
446 followers|155,422 views
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BBC, That's Not How Meerkat Works. That's Now How Any of This Works.

#BBC has above-the-fold story right now about meerkats. The actual little critters, not the red-hot new iOS social video app.  Ahhh, well... I read the story anyway.  Because meerkats.

http://www.bbc.com/earth/story/20150324-the-truth-about-meerkats

#meerkat
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Eric Whitehead

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Eric Whitehead

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You learn something every day...
 
Play It Again, Sam

In general relativity, gravity is represented not as a force, but as a curvature of spacetime. This was first verified in 1919 when Arthur Eddington observed the deflection of starlight during a solar eclipse. Since then we’ve observed lots of examples of such gravitational lensing.  Often these occur when a distant quasar is obscured by a closer galaxy, though the effect is also seen when measuring the positions of stars. Usually, the gravitational lensing we see by galaxies are largely static, since the background quasar or galaxy is a fairly uniform light source, but a new paper in Science presents the observation of a distant supernova gravitationally lensed by a closer galaxy. This has produced multiple images of the explosion not only at different points in space, but also at different points in time.

The team happened to observe a supernova that occurred about 9 billion years ago. Since it happened to be located almost exactly behind a closer galaxy, it was seen in multiple locations due to the gravitational effect of the galaxy. The gravitational lensing also made the supernova appear brighter than it would on its own, since gravitational lensing can magnify an image similar to the way a telescope can. We’ve seen this kind of thing before, but the difference is that a supernova brightens quickly and then fades, unlike a distant galaxy or quasar. This meant the light reaching us was only visible for a short period of time. But since light traveling around one side of the foreground galaxy travelled a different distance than light taking a different path around the galaxy, the flash of the supernova appeared not only at different locations, but at different times. The team saw four different images of the supernova over the course of a few weeks.

Having observed this, the team figured that other images of the supernova should have appeared at different times before. Looking through past observations of the galaxy, they found other appearances of the supernova in 1964 and 1995. They also estimated that another appearance should occur in a few years. Because of the great cosmic distances, different paths of the supernova’s light can vary in their travel times by decades, so we can observe this single stellar explosion again and again as the light reaches us along different paths.  We’ve known this kind of thing should happen in theory, but it’s really neat to actually observe the effect.

As we see more appearances of the supernova, it will give us detailed information about the distribution of matter around the galaxy. Combining information about the amount of lensing with the light travel time, we can make a map of the shape of spacetime near the galaxy, and that will tell us about the distribution of both regular and dark matter in the region.

Paper: Kelly et al. Multiple images of a highly magnified supernova formed by an early-type cluster galaxy lens. 347 (6226): 1123-1126 (2015)
Light from a supernova has been gravitationally lensed by a galaxy, and as a result we can observe the supernova over and over gain.
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Eric Whitehead

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Just When I Thought Google Might Know Too Much About Me...

...they go and prove that they, in the immortal words of Sgt. Schultz, "know naaaaathing..."  Better luck next time, Google.  :)
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😂

I noticed the same some time ago. It really puts people's fear of Google's data mining in perspective. Me? Not worried at all.
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iOS 8.1.3: Major Bugs Left Unfixed

With the latest iOS release, Apple has chosen to ignore the list of bugs introduced 4 months ago that render most still-supported devices (like my iPad) almost unusable.

Since updating to iOS, my iPad has intermittent WiFi drops, laggy touch response (like 2-3 seconds to respond to a button touch), half the battery life, and more crashes.

Should you update to 8.1.3?  I used to says "yes, right away" to any update; now my post-iOS-8 guideline is "if it doesn't address performance problems or add value to the feature set, skip it".

#apple   #ios #iPad  
The sixth update to iOS 8 still ignores its biggest problems.
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Where's The Party?

Looking to bring in the New Year with an off-the-hook party tomorrow night?  How about hitting Dubai with Pharrell, or midnight fireworks in a glass capsule high about Las Vegas? 

My vote: Hit the 6-hour party at the Sydney Oprah House, then at 2am climb aboard your party's private Gulfstream G550 for LA, where I will then bring in the New Year again.  Twice as awesome.

Read on: http://goo.gl/VBnjAT

#newyear2015   #newyearseve   #newyearseveparty  
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Amazing pic
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How You Can Help the Victims of Cyclone Pam

"There’s devastation as far as the eye can see."

We're waking up to the news about the complete devastation of the Vanuatu islands. One of the best ways you can help is with a donation to Samaritan's Purse, one of the best organizations for handling disaster relief needs such as shelter, cooking kits, and water.

They have 50 tons of relief in route right now. Let's help out with the next 50.

#cylone #vanuatu #pam 
Samaritan's Purse is sending a multinational team to bring relief after a terrible storm wreaks havoc across the nation of Vanuatu
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I've watched hockey for 30 years, and I think this is a first.

#hockey   #goal  
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+Rob Scallon Will Make You Want To Quit Guitar

Or perhaps he will make you want to pick up a 9-string yourself.  It's up to you, of course, but take a few minutes to hear a man who needs no bass player.

(Hungry for more?  https://www.youtube.com/watch?v=xiERPVIEvSc for a soaring 8-string arrangement.)

#guitar   #music  
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When is a Cover Better Than the Original?

When the original artist says so.  Depeche Mode's Andrew Fletcher reportedly loved Failure's 1997 cover of their song "Enjoy the Silence" so much that he actually prefers their cover over DP's original.

Take a 4:18 break in your day to take in this epic (sorry, there's really no better word) cover of the 1990 smash hit single.

#depechemode   #failure   #rock  
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This one's for +Mike Prigodich...

#puns   #humor  
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The Key to Talent is Versatility

Watch Metallica re-imagine their own song Enter Sandman.

#metallica   #jazz    #rock  
 
This is the best thing I've seen this week! Hahahaha

(via Limited Share)
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+Andy Rehfeldt What I take from Eric's comment is that you are extremely talented and Metallica... not so much. ;)
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Have him in circles
446 people
endo Mus's profile photo
The Triangle Resistance Page's profile photo
David May's profile photo
Florence Murphy's profile photo
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Education
  • Wheaton College
    BA Communications, 1987 - 1991
  • Wayzata High School
    1984 - 1987
Basic Information
Gender
Male
Work
Occupation
Enterprise Architect
Employment
  • inVision Collaborative
    present
Places
Map of the places this user has livedMap of the places this user has livedMap of the places this user has lived
Currently
Columbus, OH
Previously
Los Angeles, CA - Minneapolis, MN - Chicago, IL
These are your guys for critters like Moles, Birds, Bats, Raccoons, Squirrels, Chipmunks, Skunks, Groundhogs and Opossums. I heard what sounded like a chipmunk in our kitchen exhaust vent. Called at 11:30am on a Saturday, and Chris was out to my place within an hour. (For course, this may not always be possible.) Before he even started he said "That's not a chipmunk, sounds more like a bird" -- and he was right. Gained access to the bird without damaging or altering our duct work, released the bird outside, and restored the vent cover. Also did excellent installation of a vent screen to prevent re-entry. Price was about in the range I expected, perhaps a bit on the high side. But of the two others place I called first, one was closed and the other charged "emergency" rates on the weekends. So they were the lowest of those I found on a Saturday. Highly recommended.
• • •
Public - 2 weeks ago
reviewed 2 weeks ago
Of all the sushi places in Central Ohio - and I've been to a lot of them - Mr. Sushi is in the top tier. Gotta award that 5 stars.
Public - a month ago
reviewed a month ago
Claim to be open 24 hours. Closed often after 10 or 11pm.
Public - a month ago
reviewed a month ago
5 reviews
Map
Map
Map
Claims to be open 24 hours. Frequently closed at 10 or 11 pm.
Public - a month ago
reviewed a month ago
My wife and I stayed at the Porch House several years ago for a perfect getaway overnight. We are not big on the social aspect of B&B's, and that wasn't a problem as the house served as our home base for our busy schedule. We didn't want to miss out on the delicious breakfast, though, and it was fun to meet the other guests (briefly) before heading out. Location is perfect for bike treks (right on the bike trail access) or walking to dinner in town. Less than 2 blocks from most things, a little more for Denison events. Highly recommended.
• • •
Public - a year ago
reviewed a year ago