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Archive for the ‘physics’ category: Page 92

Jul 29, 2022

Scientists fabricate high-performance large-area perovskite submodules for solar cells

Posted by in categories: chemistry, engineering, physics, solar power, sustainability

Perovskite solar cells (PSCs) are promising solar technologies. Although low-cost wet processing has shown advantages in small-area PSC fabrication, the preparation of uniform charge transport layers with thickness of several nanometers from solution for meter-sized large area products is still challenging.

Recently, a research group led by Prof. LIU Shengzhong from the Dalian Institute of Chemical Physics (DICP) of the Chinese Academy of Sciences (CAS) has developed a facile surface redox engineering (SRE) strategy for vacuum-deposited NiO x to match the slot-die-coated perovskite, and fabricated high-performance large-area perovskite submodules.

This work was published in Joule (“Surface redox engineering of vacuum-deposited NiO x for top-performance perovskite solar cells and modules”).

Jul 28, 2022

#58 Dr. Ben Goertzel — Artificial General Intelligence

Posted by in categories: biological, blockchains, information science, neuroscience, physics, robotics/AI, singularity

Patreon: https://www.patreon.com/mlst.
Discord: https://discord.gg/ESrGqhf5CB

The field of Artificial Intelligence was founded in the mid 1950s with the aim of constructing “thinking machines” — that is to say, computer systems with human-like general intelligence. Think of humanoid robots that not only look but act and think with intelligence equal to and ultimately greater than that of human beings. But in the intervening years, the field has drifted far from its ambitious old-fashioned roots.

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Jul 28, 2022

A.I. Wars, The Fermi Paradox and Great Filters with David Brin

Posted by in categories: alien life, existential risks, nanotechnology, physics, robotics/AI, security

Why we need AI to compete against each other. Does a Great Filter Stop all Alien Civilizations at some point? Are we Doomed if We Find Life in Our Solar System?

David Brin is a scientist, speaker, technical consultant and world-known author. His novels have been New York Times Bestsellers, winning multiple Hugo, Nebula and other awards.
A 1998 movie, directed by Kevin Costner, was loosely based on his book The Postman.
His Ph.D in Physics from UCSD — followed a masters in optics and an undergraduate degree in astrophysics from Caltech. He was a postdoctoral fellow at the California Space Institute and the Jet Propulsion Laboratory.
Brin serves on advisory committees dealing with subjects as diverse as national defense and homeland security, astronomy and space exploration, SETI and nanotechnology, future/prediction and philanthropy. He has served since 2010 on the council of external advisers for NASA’s Innovative and Advanced Concepts group (NIAC), which supports the most inventive and potentially ground-breaking new endeavors.

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Jul 28, 2022

Columbia Engineering Roboticists Discover Alternative Physics

Posted by in categories: physics, robotics/AI

A new AI program observed physical phenomena and uncovered relevant variables—a necessary precursor to any physics theory.

Jul 28, 2022

An AI May Have Just Invented “Alternative” Physics

Posted by in categories: physics, robotics/AI

An AI shown videos of physical phenomena and instructed to identify the variables involved produced answers different from our own.

Jul 27, 2022

Soon you can take a portable version of the Earth’s magnetic field to outer space

Posted by in categories: cosmology, education, physics

Jul 27, 2022

Artificial Intelligence Discovers Alternative Physics

Posted by in categories: education, physics, robotics/AI

A new Columbia UniversityColumbia University is a private Ivy League research university in New York City that was established in 1754. This makes it the oldest institution of higher education in New York and the fifth-oldest in the United States. It is often just referred to as Columbia, but its official name is Columbia University in the City of New York.

Jul 26, 2022

Roboticists discover alternative physics

Posted by in categories: information science, physics, robotics/AI

Energy, mass, velocity. These three variables make up Einstein’s iconic equation E=MC2. But how did Einstein know about these concepts in the first place? A precursor step to understanding physics is identifying relevant variables. Without the concept of energy, mass, and velocity, not even Einstein could discover relativity. But can such variables be discovered automatically? Doing so could greatly accelerate scientific discovery.

This is the question that researchers at Columbia Engineering posed to a new AI program. The program was designed to observe through a , then try to search for the minimal set of fundamental variables that fully describe the observed dynamics. The study was published on July 25 in Nature Computational Science.

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Jul 26, 2022

Physics, Life Sciences, and Dragon Cargo Transfer Top Tuesday’s Task List for Crew

Posted by in categories: physics, space

The Expedition 67 crewmembers aboard the International Space Station spent Tuesday predominantly on research, maintenance, and cargo transfer operations.

Research beneficial to humans on Earth and future crews in space is happening around the clock aboard the orbiting laboratory. NASA Flight Engineer Kjell Lindgren used a majority of his day to service samples for the Immunosenescence investigation inside the Life Science Glovebox. Results from this study may one day inform treatments for accelerated aging processes commonly observed in microgravity and contribute to countermeasures for normal aging progression.

Jul 25, 2022

Kinetic energy: Newton vs. Einstein | Who’s right?

Posted by in categories: energy, information science, physics

Using Newtonian physics, physicists have found an expression for the value of kinetic energy, specifically KE = ½ m v^2. Einstein came up with a very different expression, specifically KE = (gamma – 1) m c^2. In this video, Fermilab’s Dr. Don Lincoln shows how these two equations are the same at low energy and how you get from one to the other.

Relativity playlist:

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