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Replacing fossil fuel with hydrogen seems like an ideal solution to make transportation environmentally friendly and to provide a backup for intermittent energy sources like solar and wind. But how environmentally friendly is hydrogen really? And how sustainable is it, given that hydrogen fuel cells rely on supply of rare metals like platinum and iridium? In this video, we have collected all the relevant numbers for you.

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00:00 Intro.

Continue reading “Hydrogen Will Not Save Us. Here’s Why” | >

Lawrence Livermore National Laboratory’s decades of leadership in developing high-energy lasers is being tapped to provide a key component of a major upgrade to SLAC National Accelerator Laboratory’s Linac Coherent Light Source (LCLS).

Over the next several years, LLNL’s Advanced Photon Technologies (APT) program will design and construct one of the world’s most powerful petawatt (quadrillion-watt) laser systems for installation in an upgraded Matter in Extreme Conditions (MEC) experimental facility at LCLS, funded by the Department of Energy’s Office of Science-Fusion Energy Sciences program.

The new laser will pair with the LCLS X-ray free-electron laser (XFEL) to advance the understanding of high-energy density (HED) physics, plasma physics, fusion energy, laser-plasma interactions, astrophysics, planetary science and other physical phenomena.

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Two and a half years ago, MIT entered into a research agreement with startup company Commonwealth Fusion Systems to develop a next-generation fusion research experiment, called SPARC, as a precursor to a practical, emissions-free power plant.

-Sept 2020

MIT researchers have published seven papers outlining details of the physics behind the ambitious SPARC fusion research experiment being developed by MIT and Commonwealth Fusion Systems.

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An international team led by researchers at the Instituto de Astrofísica de Canarias (IAC), Spain, has found two planets with Earth-like masses in the habitable zone of a red dwarf star, just 16 light years from our own Solar System.

Artist’s impression of two Earth-mass planets orbiting the star GJ 1002. Credit: Alejandro Suárez Mascareño and Inés Bonet (IAC)

“Nature seems bent on showing us that Earth-like planets are very common,” explains Alejandro Suárez Mascareño, an IAC researcher, first author of a study that appears in Astronomy & Astrophysics. “With these two, we now know seven in planetary systems quite near to the Sun.”

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The speed of light secret! Join us, and find out more!

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In this video, Unveiled takes a closer look at the possibility of traveling at the speed of light! Perhaps more than any other target in physics, this is the one that scientists really want to achieve! But there are some theories that, actually, we can ALREADY travel at light speed… it’s just that the rest of the world doesn’t know it yet!

This is Unveiled, giving you incredible answers to extraordinary questions!

Find more amazing videos for your curiosity here:
The Different Types of Alien You Should Know About — https://youtu.be/emyaBkxzwPE
Can James Webb Finally Find Planet 9? — https://youtu.be/2uf_uF7A_qc.

0:00 Intro.

Continue reading “Is the Government Hiding Speed Of Light Travel? | Unveiled” | >

In November 2018, three physicists from the Perimeter Institute for Theoretical Physics in Waterloo, Canada, offered an unusual idea: from the Big Bang not only the Universe we know but also ‘its mirror image’ created.

Twin spiral galaxies and stars in space. NASA provided picture elements. A universe that extends backward in time. From our perspective, the Universe “after the Big Bang” moves… backwards.

The physicists Latham Boyle, Keran Finn, and Neil Turok suggested in a Physical Review Letters article that the Universe we live in is merely a fragment of the true Universe and that if so, dark matter and inflation would no longer make sense.

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The first important generative models for images used an approach to artificial intelligence called a neural network — a program composed of many layers of computational units called artificial neurons. But even as the quality of their images got better, the models proved unreliable and hard to train. Meanwhile, a powerful generative model — created by a postdoctoral researcher with a passion for physics — lay dormant, until two graduate students made technical breakthroughs that brought the beast to life.

DALL·E 2 is such a beast. The key insight that makes DALL·E 2’s images possible — as well as those of its competitors Stable Diffusion and Imagen — comes from the world of physics. The system that underpins them, known as a diffusion model, is heavily inspired by nonequilibrium thermodynamics, which governs phenomena like the spread of fluids and gases. “There are a lot of techniques that were initially invented by physicists and now are very important in machine learning,” said Yang Song, a machine learning researcher at OpenAI.

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What is the Drake Equation? We are talking about The Odds of ALIEN LIFE.
Is there life out there in the Universe?
How are the chances to find Extraterrestrial life?

We don’t know the answers to a lot of questions, for example:
How many alien societies exist, and are detectable?
Even though we don’t know how to answer such a question, we can at least try to figure it out with a little help from our beloved…Math.
First, we have to have a pretty good idea about how the universe works, and of course about the star and planetary formation, as well as conditions for life as we know it. This means we have to study and collect a lot of data. Luckily for us, we – humans — aren’t so bad. Physics, astronomy, chemistry, biology and all-natural sciences offer us the hints for the mathematical set of parameters that will give us an equation to calculate the number of alien societies that exist and are detectable.
Second, one has to sit down and think about which parameters should appear in the equation, and which not.
Do you think it’s difficult? I think so.
But luckily for us, in 1961 scientists Drake came up with a famous equation, that estimated the number of transmitting societies in the Milky Way Galaxy…

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Continue reading “What Are The Odds Of Alien Life? The Drake Equation” | >

An engine idea that can accelerate to 99 percent of the speed of light, all without the need for propellant. That may sound like something out of a science fiction movie, but it’s not. This is exactly what one of NASA engineers is developing, and it promises to break the law of physics.

How will these engines be developed? If it is going to work without propellant, then what will be its fuel? And most importantly, will a human be able to travel in a vehicle with such an engine as its thruster? Well, we will find out in just a second.

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Boltzmann brains are perhaps one of the spookiest ideas in physics. A Boltzmann brain is a single, isolated human brain complete with false memories that spontaneously fluctuates into existence from the void. They’re the kind of thing you’d find in a campfire horror story. The big problem, however, is that a range of plausible cosmological models (including our current cosmology) predict that Boltzmann brains will exist. Even worse, these brains should massively outnumber “ordinary” conscious observers like ourselves. At every moment of your existence, it is more likely that you are an isolated Boltzmann brain, falsely remembering your past, than a human being on a rocky planet in a low-entropy universe.

In this video I explain where the idea of Boltzmann brains originated, and why they haunt modern cosmology.

Thanks for watching, and I hope you enjoyed! Please like and subscribe for more videos on amazing ideas in physics.

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Continue reading “Boltzmann Brains: A Cosmological Horror Story” | >