Science, Technology, and Current Futurism
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Surprising: Quantum Experiment Shows How Time ‘Emerges’ from Entanglement

Surprising: Quantum Experiment Shows How Time ‘Emerges’ from Entanglement | Science, Technology, and Current Futurism | Scoop.it

Then in 1983, the theorists Don Page and William Wooters came up with a novel solution based on the quantum phenomenon of entanglement. This is the exotic property in which two quantum particles share the same existence, even though they are physically separated.

 

Entanglement is a deep and powerful link and Page and Wooters showed how it can be used to measure time. Their idea was that the way a pair of entangled particles evolve is a kind of clock that can be used to measure change.

 

But the results depend on how the observation is made. One way to do this is to compare the change in the entangled particles with an external clock that is entirely independent of the universe. This is equivalent to god-like observer outside the universe measuring the evolution of the particles using an external clock.

 

In this case, Page and Wooters showed that the particles would appear entirely unchanging—that time would not exist in this scenario.

 

But there is another way to do it that gives a different result. This is for an observer inside the universe to compare the evolution of the particles with the rest of the universe. In this case, the internal observer would see a change and this difference in the evolution of entangled particles compared with everything else is an important a measure of time.

 

This is an elegant and powerful idea. It suggests that time is an emergent phenomenon that comes about because of the nature of entanglement. And it exists only for observers inside the universe. Any god-like observer outside sees a static, unchanging universe, just as the Wheeler-DeWitt equations predict.

 

Of course, without experimental verification, Page and Wooter’s ideas are little more than a philosophical curiosity. And since it is never possible to have an observer outside the universe, there seemed little chance of ever testing the idea.

 

Until now. Today, Ekaterina Moreva at the Istituto Nazionale di Ricerca Metrologica (INRIM) in Turin, Italy, and a few pals have performed the first experimental test of Page Wooters ideas. And they confirm that time is indeed an emergent phenomenon for ‘internal’ observers but absent for external ones.

 

In the last years several theoretical papers discussed if time can be an emergent property deriving from quantum correlations. Here, to provide an insight into how this phenomenon can occur, physicists present an experiment that illustrates Page and Wootters' mechanism of "static" time, and Gambini subsequent refinements. A static, entangled state between a clock system and the rest of the universe is perceived as evolving by internal observers that test the correlations between the two subsystems. They implement this mechanism using an entangled state of the polarization of two photons, one of which is used as a clock to gauge the evolution of the second: an "internal" observer that becomes correlated with the clock photon sees the other system evolve, while an "external" observer that only observes global properties of the two photons can prove it is static.


Via Dr. Stefan Gruenwald
Sharrock's insight:

from the article: "This is an elegant and powerful idea. It suggests that time is an emergent phenomenon that comes about because of the nature of entanglement. And it exists only for observers inside the universe. Any god-like observer outside sees a static, unchanging universe, just as the Wheeler-DeWitt equations predict."

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It’s becoming possible to know our own cells in astonishing, unparalleled detail

It’s becoming possible to know our own cells in astonishing, unparalleled detail | Science, Technology, and Current Futurism | Scoop.it
The objective is to construct the first comprehensive “cell atlas,” or map of human cells, a technological marvel that should comprehensively reveal, for the first time, what human bodies are actually made of and provide scientists a sophisticated new model of biology that could speed the search for drugs.

To perform the task of cataloguing the 37.2 trillion cells of the human body, an international consortium of scientists from the U.S., U.K., Sweden, Israel, the Netherlands, and Japan is being assembled to assign each a molecular signature and also give each type a zip code in the three-dimensional space of our bodies.
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TR10: Biological Machines - MIT Technology Review

TR10: Biological Machines - MIT Technology Review | Science, Technology, and Current Futurism | Scoop.it
Michel Maharbiz’s novel interfaces between machines and living systems could give rise to a new generation of cyborg devices.
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Finally! Google sells Boston Dynamics to SoftBank | The Robot Report - tracking news about the business of robotics

Finally! Google sells Boston Dynamics to SoftBank | The Robot Report - tracking news about the business of robotics | Science, Technology, and Current Futurism | Scoop.it
In a long-awaited transaction, The New York Times Dealbook announced that SoftBank was buying Boston Dynamics from Alphabet (Google). Also included in the deal is the Japanese startup Schaft. Acquisition details were not disclosed.
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New heart attack treatment uses photosynthetic bacteria to make oxygen

New heart attack treatment uses photosynthetic bacteria to make oxygen | Science, Technology, and Current Futurism | Scoop.it
Bringing oxygen to starved tissues is what Stanford cardiovascular surgeon Joseph Woo had in mind when he and colleagues dreamed up the plan to put light-harvesting bacteria into the heart. In a heart attack, clogged arteries or blood clots cut off blood flow to the organ. Without oxygen supplied by the blood, heart cells die.

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The beautiful languages of the people who talk like birds

The beautiful languages of the people who talk like birds | Science, Technology, and Current Futurism | Scoop.it
Meyer’s interest in whistled languages began with a 40-year-old Scientific American article about Silbo Gomero – a form of whistled Spanish ‘spoken’ on one of the Canary Islands. The trilled sounds allow shepherds to communicate across deep ravines, and they are apparently so close to the local birdsong that blackbirds have been known to learn and mimic the human dialogues. You can hear a clip above of someone whistling 'En todo el mundo hay hombres que hablan silbando', which translates as 'Around the World, there are humans who whistle their language'. (Clip courtesy of Julien Meyer and Laure Dentel.)
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Could A Sonic Weapon Make Your Head Explode?

Could A Sonic Weapon Make Your Head Explode? | Science, Technology, and Current Futurism | Scoop.it
Infrasonic sound can have very unusual non-auditory effects on the body. But does it kill?
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Traumatic Brain Injury Resource Guide - Brain Function

In traumatic brain injury the brain may be injured in a specific location or the injury may be diffused to many different parts of the brain. It is this indefinite nature of brain injury that makes treatment unique for each individual patient. In the past twenty years, a great deal has been learned about brain function, and we learn more everyday. We can make guesses about the nature of the problems an individual may have from knowing the location of a lesion. Diagnostic procedures such as CT scans and MRI's can also provide information about a brain injury. As rehabilitation specialists, however, we can also learn about an injury by observing the day to day activities of the patient. All the activities we perform each day, whether physical or mental, are directed by different parts of our brains. It is important that you become familiar with brain function to better understand how therapies, created by rehabilitation professionals, help brain injured patients. In order for you to better understand how the rehabilitation process works we will guide you through the different parts of the brain and indicate some of the functions and problems resulting from injury.

The brain has many parts including the cerebral cortex, brain stem, and cerebellum. By listing some of the functions of each part of the brain, we will provide an overview of what problems occur after injury to these parts. It is important to understand that the brain functions as a whole by interrelating its component parts. The injury may only disrupt a particular step of an activity that occurs in a specific part of the brain. The interruption of that activity at any particular step, or out of sequence, can reveal the problems associated with the injury. Below is a list of functions and deficits or problems revealed when injury occurs at particular locations. The terms in parenthesis are the professional terms used to describe the deficit. Please refer to the Brain Map at the bottom of this page for an illustration of the main areas of the brain.
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Watch Surgical Robot Deftly Suture a Grape

Watch Surgical Robot Deftly Suture a Grape | Science, Technology, and Current Futurism | Scoop.it
We've covered Intuitive Surgical's da Vinci surgical robot for years. In fact, to some, the system's long history—1.5 million surgeries dating back to 2000—may be one of its most surprising attributes. But this video really drives home the system's dexterity. Using a new tool, the FDA-approved Single-Site Wristed Needle Driver, a surgeon guides the bot to gently stitch the …
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The Internet Of Things Is Transforming Industries You Would Never Think Of | Digital Tonto

The Internet Of Things Is Transforming Industries You Would Never Think Of | Digital Tonto | Science, Technology, and Current Futurism | Scoop.it
As digital connectivity begins to transform physical machines, it’s likely that we’re now in the early days of a new productivity boom.
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Our Alarming Food Future, Explained in 7 Charts | Mother Jones

Our Alarming Food Future, Explained in 7 Charts | Mother Jones | Science, Technology, and Current Futurism | Scoop.it
The takeaway from a blockbuster climate report: As the temperature goes up, crop yields will go down.
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How did gene therapy go from experimental disasters to wondrous cures?

How did gene therapy go from experimental disasters to wondrous cures? | Science, Technology, and Current Futurism | Scoop.it
Scientists have solved fundamental problems that were holding back cures for rare hereditary disorders. Next we’ll see if the same approach can take on cancer, heart disease, and other common illnesses.
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A Completely new Look at DNA Replication

A Completely new Look at DNA Replication | Science, Technology, and Current Futurism | Scoop.it
Scientists have gotten a close look at a process that is fundamental to life on earth - DNA replication - and were suprised by what they saw.
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Transportation as a service (TaaS): a look ahead | The Robot Report - tracking news about the business of robotics

Chris predicts an inevitable shift to EVs, a change in the ownership concept to transportation services, and dramatic changes in manufacturing and jobs in what used to be the auto industry and will soon be the transportation services industry.

Urmson attributes the shift in thought from gradually adding more self-driving features until it becomes time to remove the pedals and steering wheel - the stated posture of most of the auto industry - to using deep learning and simulation training to be able to directly go to self-driving cars - the position taken by Google, Ford, and many of the new startups - as a particularly important contribution made by Google. Later in his lecture, when answering a question about the state of the robotics industry versus the state of the art being developed in universities and research labs such as CMU, he lauded the deep pockets that business - and especially Google - brings to research in general and self-driving cars in particular.
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What's slowing the use of robots in the ag industry? | The Robot Report - tracking news about the business of robotics

Two traditional qualifyers for farmers buying new equipment are flexibility and return on investment. Precision agriculture isn't just rhetoric; it's real-time intelligence flowing into analytics software that transforms that flow into meaningful, practical information that farm managers can react to quickly. That data -- and that process -- have costs and, for the last few years, farmers have been stretched because commodity prices are down. But changes effecting labor, water, commodity prices and politics are speeding up the need for significant automation in the already heavily automated agriculture industry while technological improvements are speeding up, particularly in the areas of vision systems, perception and grasping.

Consider these four key providers:
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“Why is your research important?” – Society

“Why is your research important?” – Society | Science, Technology, and Current Futurism | Scoop.it
Basic research is generally done to further scientific knowledge without obvious or immediate benefits, which is a difficult concept to explain to society.
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