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Shared Circles including Ivan Mashchenko

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Activity

Average numbers for the latest posts (max. 50 posts, posted within the last 4 weeks)

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601
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Top posts in the last 50 posts

Most comments: 1

posted image

2015-06-22 19:29:20 (1 comments, 1 reshares, 8 +1s)Open 

#Lol

Most reshares: 5

posted image

2015-06-20 01:39:18 (0 comments, 5 reshares, 8 +1s)Open 


Paper plane kept afloat

Most plusones: 9

posted image

2015-06-22 19:29:38 (0 comments, 0 reshares, 9 +1s)Open 

Oh my...


via http://tapiture.com/tap/356812748

Latest 50 posts

posted image

2015-06-22 19:30:02 (0 comments, 0 reshares, 7 +1s)Open 

On the Edge
Lubec, Maine

Back from spending most of the week in Maine chasing dark skies. And the weather certainly did not disappoint! This was taken from the cliffs at Quoddy Head State Park, overlooking Quoddy Channel that separates the U.S. and Canada.

The image is a blend of several frames, including a long 15-minute exposure to extract details from the foreground rocks and water. The light streak on the far cliffs on the right is from nearby West Quoddy Head Light.

#landscapephotography   #landscapephoto   #landscapepicture   #naturephotography   #naturephotos   #naturemonday   #nightphotography   #milkyway   #milkywayphotography   #seascape   #seascapephotography   #coast   #newengland   #maine  

On the Edge
Lubec, Maine

Back from spending most of the week in Maine chasing dark skies. And the weather certainly did not disappoint! This was taken from the cliffs at Quoddy Head State Park, overlooking Quoddy Channel that separates the U.S. and Canada.

The image is a blend of several frames, including a long 15-minute exposure to extract details from the foreground rocks and water. The light streak on the far cliffs on the right is from nearby West Quoddy Head Light.

#landscapephotography   #landscapephoto   #landscapepicture   #naturephotography   #naturephotos   #naturemonday   #nightphotography   #milkyway   #milkywayphotography   #seascape   #seascapephotography   #coast   #newengland   #maine  ___

posted image

2015-06-22 19:29:38 (0 comments, 0 reshares, 9 +1s)Open 

Oh my...


via http://tapiture.com/tap/356812748

Oh my...


via http://tapiture.com/tap/356812748___

posted image

2015-06-22 19:29:20 (1 comments, 1 reshares, 8 +1s)Open 

#Lol

#Lol___

posted image

2015-06-20 01:42:14 (0 comments, 1 reshares, 8 +1s)Open 

Nothing to see here, move along bro
#caturday 

Nothing to see here, move along bro
#caturday ___

posted image

2015-06-20 01:40:28 (0 comments, 0 reshares, 1 +1s)Open 

Gosi-Chon, Seoul, Korea

Gosi-Chon, Seoul, Korea___

posted image

2015-06-20 01:39:18 (0 comments, 5 reshares, 8 +1s)Open 


Paper plane kept afloat


Paper plane kept afloat___

posted image

2015-06-20 01:37:29 (0 comments, 0 reshares, 4 +1s)Open 

Mt. Broderick
Yosemite Valley, California

Good morning/afternoon/evening, G+ friends! Mt. Broderick is located at south of the famous Half Dome. Behind it, the peak covered by the cloud, is the Liberty Cap. Luck was always on my side during this trip. This beautiful cloud scene only lasted about 10 minutes during The Golden Hour. Have a wonderful weekend and stay cool, my friends! :-)

~~~~~~~~~~~~~~~~~~~~~~~~~
© Wayne Lu  2015 All Rights Reserved
~~~~~~~~~~~~~~~~~~~~~~~~~

Photography:
#photography | #photooftheday | #googleplusphotos | #googleplusphotograhers | #googleplusphotography | #promotephotography | #photomaniausa | #bellesphotos | #showyourbestwork +ShowYourBestWork | #everydaythings | #picforest +Picforest | +Dubie Bacino | #hqsphdr +HQSP HDR | #themagicoflight +The Magic of Light 
... more »

Mt. Broderick
Yosemite Valley, California

Good morning/afternoon/evening, G+ friends! Mt. Broderick is located at south of the famous Half Dome. Behind it, the peak covered by the cloud, is the Liberty Cap. Luck was always on my side during this trip. This beautiful cloud scene only lasted about 10 minutes during The Golden Hour. Have a wonderful weekend and stay cool, my friends! :-)

~~~~~~~~~~~~~~~~~~~~~~~~~
© Wayne Lu  2015 All Rights Reserved
~~~~~~~~~~~~~~~~~~~~~~~~~

Photography:
#photography | #photooftheday | #googleplusphotos | #googleplusphotograhers | #googleplusphotography | #promotephotography | #photomaniausa | #bellesphotos | #showyourbestwork +ShowYourBestWork | #everydaythings | #picforest +Picforest | +Dubie Bacino | #hqsphdr +HQSP HDR | #themagicoflight +The Magic of Light 

Landscape:
#HQSPLandscape +HQSP Landscape | #BTPLandscapePro +BTP Landscape Pro . |   #LandscapePhotography +Landscape Photography

Places:
#yosemite   #yosemitenationalpark   #yosemitevalley   #mtbroderick   #mountbroderick  

#sunset   #sunsetphotography   #sunsetphotos   #sunsetpicture   #sunsetlovers     #goldenhour  ___

posted image

2015-06-20 01:37:29 (0 comments, 0 reshares, 3 +1s)Open 

Mt. Broderick
Yosemite Valley, California

Good morning/afternoon/evening, G+ friends! Mt. Broderick is located at south of the famous Half Dome. Behind it, the peak covered by the cloud, is the Liberty Cap. Luck was always on my side during this trip. This beautiful cloud scene only lasted about 10 minutes during The Golden Hour. Have a wonderful weekend and stay cool, my friends! :-)

~~~~~~~~~~~~~~~~~~~~~~~~~
© Wayne Lu  2015 All Rights Reserved
~~~~~~~~~~~~~~~~~~~~~~~~~

Photography:
#photography | #photooftheday | #googleplusphotos | #googleplusphotograhers | #googleplusphotography | #promotephotography | #photomaniausa | #bellesphotos | #showyourbestwork +ShowYourBestWork | #everydaythings | #picforest +Picforest | +Dubie Bacino | #hqsphdr +HQSP HDR | #themagicoflight +The Magic of Light 
... more »

Mt. Broderick
Yosemite Valley, California

Good morning/afternoon/evening, G+ friends! Mt. Broderick is located at south of the famous Half Dome. Behind it, the peak covered by the cloud, is the Liberty Cap. Luck was always on my side during this trip. This beautiful cloud scene only lasted about 10 minutes during The Golden Hour. Have a wonderful weekend and stay cool, my friends! :-)

~~~~~~~~~~~~~~~~~~~~~~~~~
© Wayne Lu  2015 All Rights Reserved
~~~~~~~~~~~~~~~~~~~~~~~~~

Photography:
#photography | #photooftheday | #googleplusphotos | #googleplusphotograhers | #googleplusphotography | #promotephotography | #photomaniausa | #bellesphotos | #showyourbestwork +ShowYourBestWork | #everydaythings | #picforest +Picforest | +Dubie Bacino | #hqsphdr +HQSP HDR | #themagicoflight +The Magic of Light 

Landscape:
#HQSPLandscape +HQSP Landscape | #BTPLandscapePro +BTP Landscape Pro . |   #LandscapePhotography +Landscape Photography

Places:
#yosemite   #yosemitenationalpark   #yosemitevalley   #mtbroderick   #mountbroderick  

#sunset   #sunsetphotography   #sunsetphotos   #sunsetpicture   #sunsetlovers     #goldenhour  ___

posted image

2015-06-20 01:36:45 (0 comments, 0 reshares, 3 +1s)Open 

___

posted image

2015-06-20 01:35:37 (0 comments, 0 reshares, 0 +1s)Open 

___

posted image

2015-06-18 17:02:31 (0 comments, 0 reshares, 4 +1s)Open 

The Way to the Milky Way

June 18, 2015

Photographer: Jason Brownlee 

http://epod.usra.edu/blog/2015/06/the-way-to-the-milky-way.html
 
This panorama shows the Milky Way arching over a little-traveled highway in the high desert of central Oregon, near Millican Valley. The densest part of the Milky Way, the central region of our spiral galaxy (some 27,000 light years away), is at far right. The bright star at top center is Vega. Note that the red glow at left (north) is the aurora borealis. Panorama consists of 14 photos taken on April 16, 2015.

The Way to the Milky Way

June 18, 2015

Photographer: Jason Brownlee 

http://epod.usra.edu/blog/2015/06/the-way-to-the-milky-way.html
 
This panorama shows the Milky Way arching over a little-traveled highway in the high desert of central Oregon, near Millican Valley. The densest part of the Milky Way, the central region of our spiral galaxy (some 27,000 light years away), is at far right. The bright star at top center is Vega. Note that the red glow at left (north) is the aurora borealis. Panorama consists of 14 photos taken on April 16, 2015.___

posted image

2015-06-18 17:01:43 (0 comments, 0 reshares, 2 +1s)Open 

Наслаждайся жизнью, другой не будет.

Наслаждайся жизнью, другой не будет.___

posted image

2015-06-18 17:00:01 (0 comments, 0 reshares, 0 +1s)Open 

#royalbruneiairlines  

#royalbruneiairlines  ___

posted image

2015-06-18 16:59:53 (0 comments, 0 reshares, 2 +1s)Open 

Прага Путешествие и Отдых в столице Чехии Куда поехать отдыхать Что посмотреть Фото Тур
Prague Travel and Recreation in Czech Republic

Прага Путешествие и Отдых в столице Чехии Куда поехать отдыхать Что посмотреть Фото Тур
Prague Travel and Recreation in Czech Republic___

posted image

2015-06-18 16:59:45 (1 comments, 1 reshares, 3 +1s)Open 

Дельфины - The dolphins

Дельфины - The dolphins___

posted image

2015-06-18 16:59:27 (0 comments, 0 reshares, 3 +1s)Open 

You know you are in the Dairy business when you find gifs like these to be interesting...

You know you are in the Dairy business when you find gifs like these to be interesting...___

posted image

2015-06-18 16:59:10 (1 comments, 0 reshares, 4 +1s)Open 

Ponytail

via http://tapiture.com/tap/356605448

Ponytail

via http://tapiture.com/tap/356605448___

posted image

2015-06-18 16:59:01 (0 comments, 0 reshares, 0 +1s)Open 

___

posted image

2015-06-18 16:58:31 (0 comments, 0 reshares, 1 +1s)Open 

Wut? The first smartphone platform I had felt enthusiastic about was Nokia Maemo/MeeGo and it was burried by #Elop, the second one I have found myself feelimn sympatetic to is WindowsPhone7/8 and it is being buried by #Satya. Are #iPhone (with all its limitations) and #Android (with all its crappiness) all we will ever have?

Microsoft #Lumia phones are dead (so #Satya seems to say)
 +Computerworld  #ITBW  
Let's decode the two key parts of #Nadella 's missive: 
1. No mention that devices are strategic to #Microsoft . This is not a change to Nadella's recent language, but in context it speaks a clear message: Lumia is not a sacred cow. 
2. The snarky implication that Microsoft has recently been delivering things that customers don't love, and that it's been delivering too slowly. 
3. It's partly #Elop 's fault.

More at: www.computerworld.com/article/2937347/windows-phone-os/microsoft-lumia-phone-satya-nadella-memo-dead-itbwcw.html___Wut? The first smartphone platform I had felt enthusiastic about was Nokia Maemo/MeeGo and it was burried by #Elop, the second one I have found myself feelimn sympatetic to is WindowsPhone7/8 and it is being buried by #Satya. Are #iPhone (with all its limitations) and #Android (with all its crappiness) all we will ever have?

posted image

2015-06-18 16:52:04 (0 comments, 1 reshares, 5 +1s)Open 

Harsh truths. 

Harsh truths. ___

posted image

2015-06-18 16:51:40 (0 comments, 0 reshares, 0 +1s)Open 

Trippy from Google Research: Generating images by inverting image detection
http://googleresearch.blogspot.co.uk/2015/06/inceptionism-going-deeper-into-neural.html

Trippy from Google Research: Generating images by inverting image detection
http://googleresearch.blogspot.co.uk/2015/06/inceptionism-going-deeper-into-neural.html___

posted image

2015-06-18 16:51:22 (0 comments, 0 reshares, 0 +1s)Open 

#geekshirt #fallout

#geekshirt #fallout___

posted image

2015-06-18 16:51:00 (0 comments, 0 reshares, 0 +1s)Open 

their way of generating training data is clever: That immediately suggests a way of creating an annotated database: take the news articles as the texts and the bullet point summaries as the annotation.

their way of generating training data is clever: That immediately suggests a way of creating an annotated database: take the news articles as the texts and the bullet point summaries as the annotation.___

posted image

2015-06-18 16:50:55 (0 comments, 0 reshares, 1 +1s)Open 

 (This Article is not new because it's 2007, but worth reading)
Is Quantum Mechanics Incompatible with Newton’s First Law of Motion? 
Quantum mechanics (QM) clearly violates Newton’s First Law of Motion (NFLM) in the quantum domain. This paper examines an apparent incompatibility between the predictions of QM in the classical limit, and that of classical mechanics (CM) with respect to NFLM. In the process, a general argument is made that such a disparity may be found commonly for a wide variety of quantum predictions in the classical limit. The meaning of the classical limit is examined. Critical views regarding QM by Schrödinger, Bohm, Bell, Clauser, and others are presented as a perspective for the motivation of the present work.
know more: http://arxiv.org/vc/arxiv/papers/0705/0705.4455v1.pdf

 (This Article is not new because it's 2007, but worth reading)
Is Quantum Mechanics Incompatible with Newton’s First Law of Motion? 
Quantum mechanics (QM) clearly violates Newton’s First Law of Motion (NFLM) in the quantum domain. This paper examines an apparent incompatibility between the predictions of QM in the classical limit, and that of classical mechanics (CM) with respect to NFLM. In the process, a general argument is made that such a disparity may be found commonly for a wide variety of quantum predictions in the classical limit. The meaning of the classical limit is examined. Critical views regarding QM by Schrödinger, Bohm, Bell, Clauser, and others are presented as a perspective for the motivation of the present work.
know more: http://arxiv.org/vc/arxiv/papers/0705/0705.4455v1.pdf___

posted image

2015-06-18 16:50:19 (0 comments, 0 reshares, 0 +1s)Open 

Helsinki Airport will become a train station - a boost to service level

"Helsinki Airport will get the long-awaited train connection this summer when the Ring Rail Line opens. The new rail line will provide an easy connection between the airport and the Helsinki city centre..."

Learn more: http://bit.ly/1EsZ4LJ

#Finland #Helsinki #Airport #Transfer #Train

Helsinki Airport will become a train station - a boost to service level

"Helsinki Airport will get the long-awaited train connection this summer when the Ring Rail Line opens. The new rail line will provide an easy connection between the airport and the Helsinki city centre..."

Learn more: http://bit.ly/1EsZ4LJ

#Finland #Helsinki #Airport #Transfer #Train___

posted image

2015-06-18 16:50:11 (1 comments, 0 reshares, 2 +1s)Open 

Стивен Хокинг снова раздвигает реальность.

Стивен Хокинг снова раздвигает реальность.___

posted image

2015-06-18 16:49:21 (0 comments, 0 reshares, 1 +1s)Open 

Model in shorts

via http://tapiture.com/tap/356604207

Model in shorts

via http://tapiture.com/tap/356604207___

posted image

2015-06-18 16:49:07 (0 comments, 0 reshares, 1 +1s)Open 

All of these images were computer generated!

For the last few weeks, Googlers have been obsessed with an internal visualization tool that Alexander Mordvintsev in our Zurich office created to help us visually understand some of the things happening inside our deep neural networks for computer vision.  The tool essentially starts with an image, runs the model forwards and backwards, and then makes adjustments to the starting image in weird and magnificent ways.  

In the same way that when you are staring at clouds, and you can convince yourself that some part of the cloud looks like a head, maybe with some ears, and then your mind starts to reinforce that opinion, by seeing even more parts that fit that story ("wow, now I even see arms and a leg!"), the optimization process works in a similar manner, reinforcing what it thinks it is seeing.  Since the model is verydee... more »

All of these images were computer generated!

For the last few weeks, Googlers have been obsessed with an internal visualization tool that Alexander Mordvintsev in our Zurich office created to help us visually understand some of the things happening inside our deep neural networks for computer vision.  The tool essentially starts with an image, runs the model forwards and backwards, and then makes adjustments to the starting image in weird and magnificent ways.  

In the same way that when you are staring at clouds, and you can convince yourself that some part of the cloud looks like a head, maybe with some ears, and then your mind starts to reinforce that opinion, by seeing even more parts that fit that story ("wow, now I even see arms and a leg!"), the optimization process works in a similar manner, reinforcing what it thinks it is seeing.  Since the model is very deep, we can tap into it at various levels and get all kinds of remarkable effects.

Alexander, +Christopher Olah, and Mike Tyka wrote up a very nice blog post describing how this works:

http://googleresearch.blogspot.com/2015/06/inceptionism-going-deeper-into-neural.html

There's also a bigger album of more of these pictures linked from the blog post:

https://goo.gl/photos/fFcivHZ2CDhqCkZdA

I just picked a few of my favorites here.___

posted image

2015-06-18 16:45:14 (0 comments, 0 reshares, 3 +1s)Open 

The Shape of the Universe that Sends Chills Down your Spine

    According to Einstein’s theory of relativity, gravity and energy effect the shape of space.

    You can imagine this by looking at gravity not as a ‘force’ but as a downwards indentation in space. If you take a towel and have it pulled flat then drop a bowling ball in the middle, the area around the bowling ball will have been pressed down. The Moon orbiting Earth is just following a straight trajectory around this downward curvature of space.

    Energy does the opposite of gravity. It makes a positive curvature.

    When you look at the big picture, you’ve got a universe whose overall shape is dictated by whether or not it’s got an overall positive, negative or zero amount of energy.

    We know, thanks to measuring the gravity of regular matter, dark matter andthe strange anti-gravita... more »

The Shape of the Universe that Sends Chills Down your Spine

    According to Einstein’s theory of relativity, gravity and energy effect the shape of space.

    You can imagine this by looking at gravity not as a ‘force’ but as a downwards indentation in space. If you take a towel and have it pulled flat then drop a bowling ball in the middle, the area around the bowling ball will have been pressed down. The Moon orbiting Earth is just following a straight trajectory around this downward curvature of space.

    Energy does the opposite of gravity. It makes a positive curvature.

    When you look at the big picture, you’ve got a universe whose overall shape is dictated by whether or not it’s got an overall positive, negative or zero amount of energy.

    We know, thanks to measuring the gravity of regular matter, dark matter and the strange anti-gravitational force called ‘dark energy’, that we can make an equation with energy on one side and gravity on the other.

    This equation will tell us the shape of the universe.

    A negative answer means our universe is shaped like a saddle. A positive one means our universe is shaped like a globe (closed). An answer of zero means the universe has flat geometry.

    Want the mysterious part?

    Scientists have found that the universe is somehow, shockingly perfectly tuned. The measured amount of dark energy combined with the average density of matter is approximately zero. Our universe is flat.

    With a flat universe, a universe with a net total of zero energy, we have a case of an entire universe being created out of nothing.

    Somehow the matter and gravitational energies that otherwise cancelled each other out in a state of 'zero-ness’ were separated. Our universe may have in fact been created out of nothing.

    It gets more odd. If you were to add (which we can’t) a single gram of matter (just one gram) it totally changes the entire shape of the universe. Our universe would be a closed one that would end in a 'Big Crunch’ where all things collapse and fall into a singularity: a perfect opposite of the Big Bang.

    Scientists don’t like it when things seem to be fine tuned. It usually means we’re missing something. This means that our universe is many times more incredible and mysterious than you may have ever imagined before…

source
http://antikythera-astronomy.tumblr.com/post/106452819063/the-shape-of-the-universe-that-sends-chills-down

#nasa #space #universe #cosmos #science #bigbang #evolution #galaxy #stars #esa #google #shape  ___

posted image

2015-06-18 16:44:31 (0 comments, 0 reshares, 0 +1s)Open 

___

posted image

2015-06-18 16:43:45 (0 comments, 0 reshares, 1 +1s)Open 

Changing faces: We can look more trustworthy, but not more competent

We can alter our facial features in ways that make us look more trustworthy, but don't have the same ability to appear more competent, a team of New York University psychology researchers has found.

Changing faces: We can look more trustworthy, but not more competent

We can alter our facial features in ways that make us look more trustworthy, but don't have the same ability to appear more competent, a team of New York University psychology researchers has found.___

posted image

2015-06-18 16:36:32 (0 comments, 0 reshares, 2 +1s)Open 

___

posted image

2015-06-09 14:59:19 (0 comments, 0 reshares, 2 +1s)Open 

Yurikamome Line by glico-ytb.tumblr.com

Yurikamome Line by glico-ytb.tumblr.com___

posted image

2015-06-09 14:59:05 (0 comments, 0 reshares, 6 +1s)Open 

___

posted image

2015-06-09 14:58:54 (0 comments, 0 reshares, 4 +1s)Open 

A beautiful wooded area in the heart of a concrete jungle, Mt Davidson, San Francisco

Photo by Anna Lavender

A beautiful wooded area in the heart of a concrete jungle, Mt Davidson, San Francisco

Photo by Anna Lavender___

posted image

2015-06-09 14:58:39 (0 comments, 0 reshares, 1 +1s)Open 

Nina Siebinger

via http://tapiture.com/tap/348443692

Nina Siebinger

via http://tapiture.com/tap/348443692___

posted image

2015-06-09 14:58:10 (0 comments, 0 reshares, 2 +1s)Open 

#внезапно ..

#внезапно ..___

posted image

2015-06-09 14:57:30 (0 comments, 0 reshares, 3 +1s)Open 

Making a friend. 

Making a friend. ___

posted image

2015-06-09 14:57:17 (0 comments, 0 reshares, 0 +1s)Open 

Increased Grey Matter in Those With Higher Levels of Moral Reasoning

Full article at http://neurosciencenews.com/grey-matter-volume-moral-reasoning-2085/.

Research from Penn scientists and business scholars aims to link moral reasoning with brain architecture.

The research is in PLOS ONE. (full open access)

Research: "Neural Correlates of Post-Conventional Moral Reasoning: A Voxel-Based Morphometry Study" by Kristin Prehn, Marc Korczykowski, Hengyi Rao, Zhuo Fang, John A. Detre, and Diana C. Robertson in PLOS ONE doi:10.1371/journal.pone.0122914

Image: Moral reasoning and gray matter volume. Increased gray matter volume was found in the bilateral vmPFC/sgACC for participants who reached the post-conventional level (n = 38) of moral development compared to participants who did not reach that level (n = 29). For illustration... more »

Increased Grey Matter in Those With Higher Levels of Moral Reasoning

Full article at http://neurosciencenews.com/grey-matter-volume-moral-reasoning-2085/.

Research from Penn scientists and business scholars aims to link moral reasoning with brain architecture.

The research is in PLOS ONE. (full open access)

Research: "Neural Correlates of Post-Conventional Moral Reasoning: A Voxel-Based Morphometry Study" by Kristin Prehn, Marc Korczykowski, Hengyi Rao, Zhuo Fang, John A. Detre, and Diana C. Robertson in PLOS ONE doi:10.1371/journal.pone.0122914

Image: Moral reasoning and gray matter volume. Increased gray matter volume was found in the bilateral vmPFC/sgACC for participants who reached the post-conventional level (n = 38) of moral development compared to participants who did not reach that level (n = 29). For illustration purposes, gray matter (GM) volume was plotted in both groups in the region identified in the whole-brain analysis (B) and in relation with the degree of DIT-2 post-conventional reasoning (i.e., the N2 score) (C). Image credit: Prehn et al./PLOS ONE.

#neuroscience   #morality   #psychology  ___

posted image

2015-06-09 14:57:03 (0 comments, 0 reshares, 4 +1s)Open 

https://en.wikipedia.org/wiki/Glass_Beach_%28Fort_Bragg,_California%29

https://en.wikipedia.org/wiki/Glass_Beach_%28Fort_Bragg,_California%29___

posted image

2015-06-09 14:56:55 (0 comments, 0 reshares, 1 +1s)Open 

Angelina by Dennis Kozin
https://500px.com/photo/93120889

Angelina by Dennis Kozin
https://500px.com/photo/93120889___

posted image

2015-06-09 14:56:28 (0 comments, 0 reshares, 1 +1s)Open 

http://diecte.com/

http://diecte.com/___

posted image

2015-06-09 14:55:50 (0 comments, 0 reshares, 3 +1s)Open 

By eimer

By eimer___

posted image

2015-06-09 14:55:41 (0 comments, 0 reshares, 4 +1s)Open 

___

posted image

2015-06-09 14:53:10 (0 comments, 0 reshares, 1 +1s)Open 

Tree of life

via http://tapiture.com/tap/356115441

Tree of life

via http://tapiture.com/tap/356115441___

posted image

2015-06-05 23:14:56 (0 comments, 0 reshares, 1 +1s)Open 

___

posted image

2015-06-05 23:14:43 (0 comments, 0 reshares, 5 +1s)Open 

Zen ... by Shatov 

Zen ... by Shatov ___

posted image

2015-06-05 23:13:00 (0 comments, 0 reshares, 0 +1s)Open 

Einstein's Succession, Part 7
(Other parts: https://plus.google.com/collection/AP7WX)

Besides black holes and gravitational lensing the maybe most exciting consequence of Einstein’s theory is the postulation of gravitational waves [33].

The Einstein field equations predict thfat accelerated matter (or energy in general) emits gravitational quadrupole radiation as illustrated in the figure. These waves stretch and compress spacetime perpendicular to the direction of travel and cause directly observable distance fluctuations between freely falling objects. Let’s assume we have a ring of cubes freely floating in the xy-plane and a gravitational wave propagates along the z-direction. As illustrated in figure, the distance between the masses oscillates with time. The direction of this oscillation depends on the polarization of the gravitational wave. The usualbasi... more »

Einstein's Succession, Part 7
(Other parts: https://plus.google.com/collection/AP7WX)

Besides black holes and gravitational lensing the maybe most exciting consequence of Einstein’s theory is the postulation of gravitational waves [33].

The Einstein field equations predict thfat accelerated matter (or energy in general) emits gravitational quadrupole radiation as illustrated in the figure. These waves stretch and compress spacetime perpendicular to the direction of travel and cause directly observable distance fluctuations between freely falling objects. Let’s assume we have a ring of cubes freely floating in the xy-plane and a gravitational wave propagates along the z-direction. As illustrated in figure, the distance between the masses oscillates with time. The direction of this oscillation depends on the polarization of the gravitational wave. The usual basic set of polarization states are plus (+) and cross (×) polarization, others can be formed by linear combinations of these two.
While the strength of the gravitational field falls o with the square of the distance, this effect, an amplitude, falls off linearly proportional to the distance [34] and even sources located at the other end of the observable universe can produce relative distance fluctuations on the order of 10􀀀^-20 or more, depending on the frequency of the signal.

Example: On a distance of 4 kilometers, relative distance fluctuations of 10^-􀀀20 correspond to 40 attometers. This is much smaller than an atomic nucleus. For a distance of 1 million kilometers, the same fluctuations correspond to 10 picometers, which is a factor of ten below the diameter of a hydrogen atom.

This effect, as tiny as it might seem, can tell us about electromagnetically invisible objects and has a huge discovery potential for new physics. Gravitational radiation travels unaffected throughout the entire universe; in contrast to electromagnetic radiation that interacts strongly with matter and hence can be distorted or blocked. Gravitational waves were able to propagate unimpeded even in the young hot universe prior to 380,000 years after the big bang. Thus gravitational waves are a superior messenger that holds complimentary or even otherwise completely unobtainable information about processes in the universe. Gravitational wave observatories are expected to bring the next big revelations in astronomy, cosmology, and fundamental physics alike.
Although general relativity passed all tests with flying colors, and despite indirect yet irrefutable proof of the existence of gravitational waves [35], gravitational waves have never been detected directly. Currently, research teams look into indirect evidence for gravitational waves produced during cosmic inflation, now red-shifted to a static polarization pattern imprint in the cosmic microwave background radiation [36, 37]. The clear detection or non-detection of a primordial gravitational wave background from the inflationary epoch would rule out one of the two leading theories about the origin of our universe. This—for me—is the most fascinating prospect of gravitational wave astronomy: we might not only determine the shape and structure of our own universe, but also learn about the nature of the global universe it is embedded in.

Learn about the many different sources of gravitational waves in the next parts. Subscribe to https://plus.google.com/collection/AP7WX


[33] Albert Einstein and Nathan Rosen. On gravitational waves. Journal of the Franklin Institute, 223(1):43–54, 1937.
[34] E.F. Taylor, J.A. Wheeler, and E.W. Bertschinger. Exploring Black Holes: Introduction to General Relativity. Addison-Wesley, 2010.
[35] Joseph H Taylor and Joel M Weisberg. Further experimental tests of relativistic gravity using the binary pulsar PSR 1913+ 16. The Astrophysical Journal, 345:434–450, 1989.
[36] PA Ade, RW Aikin, D Barkats, SJ Benton, CA Bischo, JJ Bock, JA Brevik, I Buder, E Bullock, CD Dowell, et al. Detection of B-Mode Polarization at Degree Angular Scales by BICEP2. Phys. Rev. Lett., 112:241101, Jun 2014.
[37] Michael J. Mortonson and Uroš Seljak. A joint analysis of Planck and BICEP2 B modes including dust polarization uncertainty. Journal of Cosmology and Astroparticle Physics, 2014(10):035, 2014.___

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