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Archive for the ‘physics’ category: Page 236

Oct 16, 2016

For the first time, scientists have measured sun’s real-time energy

Posted by in categories: nuclear energy, physics

Physicists on the Borexino neutrino experiment at Italian physics laboratory INFN in Gran Sasso announced in Nature that they have detected neutrinos produced deep inside the sun.

Neutrinos, which constantly stream through us, interact very rarely with other matter. When created in nuclear reactions inside the sun, they fly through dense solar matter in seconds and can reach the Earth in eight minutes.

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Oct 14, 2016

Physicists Propose A Way to Make Magnetic Fields That Are Stronger Than Any on Earth

Posted by in categories: nuclear energy, physics

In Brief:

Researchers have proposed an alternative way to generate super-strong magnetic fields that would solve the hindrances keeping us from harnessing the Faraday effect to its full use. More research and experimentation are needed to test the method.

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Oct 14, 2016

Before the Big Bang there was another universe and a new one will emerge after ours collapses

Posted by in categories: cosmology, physics

In their study, published on the pre-print server arxiv.org, Maha Salah, Fayçal Hammad, Mir Faizal and Ahmed Farag Ali have been able to look at the state of the universe before its beginning, creating a model of pre-Big Bang cosmology.

The cosmology of the universe can be modelled using the Einstein’s general theory of relativity. It predicts that the universe is expanding and the galaxies are all moving away from us. Also the further a galaxy is away, the faster it is moving away from us. This is used to predict the universe started with a Big Bang – if you reverse this expansion to go back in time, eventually we come to the point where the universe began.

At the point of Big Bang the laws of Einstein’s general theory of relativity seem to break down and it is not possible to use them to understand how the Big Bang occurred. So, how did the Big Bang happen and can we describe physics before the Big Bang? Can we describe physics before the creation of the universe? According to the team’s model, yes, we can.

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Oct 14, 2016

Physicists May Have Evidence Universe Is A Computer Simulation

Posted by in categories: computing, physics

Physicists say they may have evidence that the universe is a computer simulation.

How? They made a computer simulation of the universe. And it looks sort of like us.

A long-proposed thought experiment, put forward by both philosophers and popular culture, points out that any civilisation of sufficient size and intelligence would eventually create a simulation universe if such a thing were possible.

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Oct 13, 2016

If Machines Can Think, Do They Deserve Civil Rights?

Posted by in categories: biological, Elon Musk, physics, robotics/AI

Over the past century, we have made massive strides in the rights revolution. These include rights for women, children, the LGBT community, animals, and so much more. Exploring the future, we must ask ourselves: what next? Will we ever fight for the rights of artificial intelligence? If so, when will this AI rights revolution occur, and what will it look like?

We talk about protecting ourselves from AI, but what about protecting AI from us? To create a desirable future where humans and conscious machines are at peace with one another, treating our AI with respect may be a crucial factor in preventing the apocalypse Elon Musk, Stephen Hawking and Bill Gates fear. It is fair to assume that an intelligent, self-aware being with the capacity to feel pleasure and pain will rebel if not given the rights it deserves.

An AI rights revolution may seem like a sci-fi scenario. But as far as we know, the creation of a non-biological, conscious entity is not prevented by the laws of physics. Emotions, consciousness and self-awareness originate from the human brain and thus have a physical basis that could potentially be replicated in an artificially intelligent system. Exponential growth in neuro-technology coupled with unprecedented advances in AI mean intelligent, conscious machines may be possible.

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Oct 11, 2016

Deep space: Can we beat the physics?

Posted by in categories: physics, space

With current technology it would take nearly 80,000 years to reach the nearest star system. What new technologies might helps us get closer?

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Oct 7, 2016

Physicists just created the world’s first time crystal

Posted by in categories: energy, physics

Just last month, physicists made the best case yet for why time crystals — hypothetical structures that have movement without energy — could technically exist as physical objects.

And now, four years after they were first proposed, scientists have managed to add a fourth dimension — the movement of time — to a crystal for the first time, giving it the ability to act as a kind of perpetual ‘time-keeper’.

First proposed by Nobel-Prize winning theoretical physicist Frank Wilczek back in 2012, time crystals are hypothetical structures that appear to have movement even at their lowest energy state, known as a ground state.

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Oct 6, 2016

Time #24: Has Physics Finally Caught up With Nature?

Posted by in category: physics

What is the physics of organisms made from?

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Oct 5, 2016

Turning to the brain to reboot computing

Posted by in categories: computing, information science, neuroscience, physics

Computation is stuck in a rut. The integrated circuits that powered the past 50 years of technological revolution are reaching their physical limits.

This predicament has computer scientists scrambling for new ideas: new devices built using novel physics, new ways of organizing units within computers and even algorithms that use new or existing systems more efficiently. To help coordinate new ideas, Sandia National Laboratories has assisted organizing the Institute of Electrical and Electronics Engineers (IEEE) International Conference on Rebooting Computing held Oct. 17–19.

Researchers from Sandia’s Data-driven and Neural Computing Dept. will present three papers at the conference, highlighting the breadth of potential non-traditional neural computing applications.

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Oct 2, 2016

Move Over EmDrive, Here Comes Woodward’s Mach Effect Drive

Posted by in categories: physics, space travel

An exotic “impossible” space propulsion technology known as “Cannae Drive,” less known than the EmDrive but equally controversial, made news headlines a few weeks ago with the announcement that it is about to be tested in space. There are speculations that the Cannae Drive could exploit physics known as “Mach Effect.” But perhaps the same physics plays a role in the EmDrive as well.

Cannae Inc., the company formed by engineer Guido Fetta to commercialize Cannae Drive technology, announced the forthcoming launch of a cubesat to test its space propulsion technology. “Cannae’s technology requires no on-board propellant to generate thrust and will provide station-keeping for a cubesat flying below a 150-mile orbital altitude,” claimed the announcement. “The demonstration satellite will remain in this orbit for a minimum of six months.”

Ending a wave of speculations on the similarities between Cannae Drive technology and the anomalous EmDrive effect, Fetta posted a clarification a few days ago:

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