Time isn’t just another dimension, argues Tim Maudlin. To make his case, he’s had to reinvent geometry.
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Sep 19, 2021
Neil Turok Public Lecture: The Astonishing Simplicity of Everything
Posted by Alan Jurisson in categories: information science, particle physics
On Oct. 7 2015, Perimeter Institute Director Neil Turok opened the 2015/16 season of the PI Public Lecture Series with a talk about the remarkable simplicity that underlies nature. Turok discussed how this simplicity at the largest and tiniest scales of the universe is pointing toward new avenues of physics research and could lead to revolutionary advances in technology.
Perimeter Institute (charitable registration number 88,981 4323 RR0001) is the world’s largest independent research hub devoted to theoretical physics, created to foster breakthroughs in the fundamental understanding of our universe, from the smallest particles to the entire cosmos. The Perimeter Institute Public Lecture Series is made possible in part by the support of donors like you. Be part of the equation: https://perimeterinstitute.ca/inspiring-and-educating-public.
Continue reading “Neil Turok Public Lecture: The Astonishing Simplicity of Everything” »
Sep 19, 2021
Breaking the warp barrier for faster-than-light travel
Posted by Quinn Sena in categories: information science, particle physics, quantum physics, space travel
If travel to distant stars within an individual’s lifetime is going to be possible, a means of faster-than-light propulsion will have to be found. To date, even recent research about superluminal (faster-than-light) transport based on Einstein’s theory of general relativity would require vast amounts of hypothetical particles and states of matter that have “exotic” physical properties such as negative energy density. This type of matter either cannot currently be found or cannot be manufactured in viable quantities. In contrast, new research carried out at the University of Göttingen gets around this problem by constructing a new class of hyper-fast ‘solitons’ using sources with only positive energies that can enable travel at any speed. This reignites debate about the possibility of faster-than-light travel based on conventional physics. The research is published in the journal Classical and Quantum Gravity.
The author of the paper, Dr Erik Lentz, analysed existing research and discovered gaps in previous ‘warp drive’ studies. Lentz noticed that there existed yet-to-be explored configurations of space-time curvature organized into ‘solitons’ that have the potential to solve the puzzle while being physically viable. A soliton — in this context also informally referred to as a ‘warp bubble’ — is a compact wave that maintains its shape and moves at constant velocity. Lentz derived the Einstein equations for unexplored soliton configurations (where the space-time metric’s shift vector components obey a hyperbolic relation), finding that the altered space-time geometries could be formed in a way that worked even with conventional energy sources. In essence, the new method uses the very structure of space and time arranged in a soliton to provide a solution to faster-than-light travel, which — unlike other research — would only need sources with positive energy densities.
Sep 19, 2021
Engage! Warp Drive Could Become Reality with Quantum-Thruster Physics
Posted by Quinn Sena in categories: quantum physics, space travel
Circa 2013
A type of thruster being tested in a NASA lab could help scientists unlock the key to making a ‘Star Trek’ inspired warp drive enabled starship.
Sep 19, 2021
Dr. Ola Engkvist, Ph.D. — AstraZeneca — Head, Molecular AI, Discovery Sciences, R&D
Posted by Ira S. Pastor in categories: biotech/medical, chemistry, robotics/AI
Applying Artificial Intelligence & Machine Learning In Drug Discovery & Design — Dr. Ola Engkvist Ph.D., Head, Molecular AI, Discovery Sciences, R&D, AstraZeneca
Dr. Ola Engkvist is Head of Molecular AI in Discovery Sciences, AstraZeneca R&D (https://www.astrazeneca.com/).
Sep 19, 2021
The CRISPR Family Tree Holds a Multitude of Untapped Gene Editing Tools
Posted by Kelvin Dafiaghor in categories: bioengineering, biotech/medical
Thanks to CRISPR, gene therapy and “designer babies” are now a reality. The gene editing Swiss army knife is one of the most impactful biomedical discoveries of the last decade. Now a new study suggests we’ve just begun dipping our toes into the CRISPR pond.
CRISPR-Cas9 comes from lowly origins. It was first discovered as a natural mechanism in bacteria and yeast cells to help fight off invading viruses. This led Dr. Feng Zhang, one of the pioneers of the technology, to ask: where did this system evolve from? Are there any other branches of the CRISPR family tree that we can also harness for gene editing?
In a new paper published last week in Science, Zhang’s team traced the origins of CRISPR to unveil a vast universe of potential gene editing tools. As “cousins” of CRISPR, these new proteins can readily snip targeted genes inside Petri dishes, similar to their famous relative.
Sep 19, 2021
The Crucial Relationship Between PTSD and the Body
Posted by Jason Blain in categories: military, neuroscience
Post-Traumatic Stress Disorder.
The crucial relationship between PTSD and the body.
A large study of military personnel suggests needed diagnostic updates.
Sep 19, 2021
Blood collection by robot a Shanghai first
Posted by Krys Hyff in categories: biotech/medical, robotics/AI
Have to admit this nurse has Kahunas. Not sure I would have the guts to put my arm in that hole.
Shanghai’s first intelligent blood collection robot has started operations at Zhongshan Hospital.
The robot can take the place of a nurse to handle blood sample collection, the hospital said.
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Sep 19, 2021
Harvard cracks DNA storage, crams 700 terabytes of data into a single gram
Posted by Quinn Sena in categories: bioengineering, biotech/medical, computing, genetics
Circa 2012.
A bioengineer and geneticist at Harvard’s Wyss Institute have successfully stored 5.5 petabits of data — around 700 terabytes — in a single gram of DNA, smashing the previous DNA data density record by a thousand times.
The work, carried out by George Church and Sri Kosuri, basically treats DNA as just another digital storage device. Instead of binary data being encoded as magnetic regions on a hard drive platter, strands of DNA that store 96 bits are synthesized, with each of the bases (TGAC) representing a binary value (T and G = 1 A and C = 0).
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Sep 19, 2021
Why tardigrades spilled all over the Moon in 2020
Posted by Quinn Sena in category: space travel
In 2,019 the Israeli Beresheet spacecraft crash-landed on the Moon. Along for the ride were thousands of tardigrades.