Tuesday, December 03, 2024
Quantum Tech Could Be Used in Warfare, Scientists Warn.
Physics, as history taught us, can be dangerous. As quantum computing continues to progress (slowly), researchers and governments across the world are worried that the technology will be used for evil purposes. Why? And should we really be worried about quantum tech? Let’s take a look.
Sunday, December 01, 2024
The Crisis in Cosmology Just Got So Much Worse
In the past decade, astrophysicists have found a lot of evidence that our large-scale theory for how the universe works has some large-scale problems as well. It has, however, remained controversial whether this is a problem with data collection or whether it is indeed a problem with our understanding of the universe. In a new paper, astrophysicists now demonstrate that something is wrong with the theory indeed. It could be the first good evidence that “Einstein was wrong.” Let’s take a look.
This video comes with a quiz which you can take here:
You can now also create your own quizzes on my website!
This video comes with a quiz which you can take here:
You can now also create your own quizzes on my website!
Saturday, November 30, 2024
Is the Universe Infinite or Finite?
Is the universe really infinite? Or could it close back on itself like a sphere? If it’s infinite, how can it expand? And is it true that there might be copies of you in it? Today I want to explain how much we know about those questions and what the expansion of space has to do with Hilbert's Hotel.
This video comes with a quiz which you can take here:
You can now also create your own quizzes on my website!
You can now also create your own quizzes on my website!
Thursday, November 28, 2024
Huge Physics Anomaly Finally Put to Test, But That Just Makes it More Confusing
Ten years ago, physicists discovered an anomaly that was dubbed the “ATOMKI anomaly”. The decays of certain atomic nuclei disagreed with our current understanding of physics. Particle physicists assigned the anomaly to a new particle, X17, often described as a fifth force. The anomaly was now tested by a follow-up experiment, but this is only the latest twist in a rather confusing story.
Wednesday, November 27, 2024
We’ve Been Searching For Aliens All Wrong, Researchers Say (and they have a point)
Civilizations need energy to expand. You’ve probably heard of the Kardashev scale, which classifies civilizations based on their ability to generate and use energy (if you’re interested, humans are barely on the scale). A new paper has shaken up that scale by putting forth new ways that advanced civilizations could harvest energy, including “eating” stars. Let’s take a look.
Tuesday, November 26, 2024
AI Could Soon Make Quantum Computing Obsolete, Nobel Prize Winner Says
Last week, DeepMind’s Demis Hassabis said that AI might be able to solve problems that quantum computers were supposedly necessary for. Indeed he said that classical systems – AI run on conventional computers – can model quantum systems. Sounds like an innocent claim but is certain to upset a lot of quantum computing researchers. Hassabis bases his argument on the surprising success of Alphafold.
Sunday, November 24, 2024
We are unlikely to be in this universe, new study finds. Multiverse falsified?
According to the multiverse theory, we are likely to find ourselves in a universe particularly suited to the emergence of life. According to a new paper, though, that’s not the case given how it’s expanded over time. But does that mean the multiverse theory has also been invalidated? Let’s take a look.
Saturday, November 23, 2024
Why Physicists Changed Their Mind about Dark Matter Particles
Axions were introduced to the world of physics in the 1970’s, when researchers believed they might be the particles that make up dark matter. While early conceptions about axions have since been proven wrong, the particles are now making a comeback as the best motivated candidates for dark matter. Let’s find out why.
This video comes with a quiz which you can take here:
You can now also create your own quizzes on my website using AI.
This video comes with a quiz which you can take here:
You can now also create your own quizzes on my website using AI.
Thursday, November 21, 2024
Webb Falsified Dark Matter Prediction – And No One Cares
Data collected by NASA’s James Webb Space Telescope is in conflict with predictions based on the hypothesis of dark matter and instead confirmed predictions made with Modified Newtonian Dynamics, MOND. While the failure of dark matter has been widely discussed as galaxies that are “too big” or “too old”, little has been said about the success of MOND. In a paper that just appeared, we have an excellent summary of the present situation, and it doesn’t look good for dark matter at all.
Wednesday, November 20, 2024
Storytelling Beats Facts in Social Media Mental Health Battle
The idea that social media causes children mental health distress is plausible, but unfortunately it isn’t true. Trouble is, if you read what the press has written about it, you wouldn’t know. Scientists have described it as a “moral panic” that isn’t backed by data, which has been promoted most prominently by one man: Jonathan Haidt.
Monday, November 18, 2024
New Calculation Finds we are close to the Kessler Syndrome
The Kessler syndrome is a scenario where, if too many collisions occur between pieces of space debris, low earth orbit will become filled with clouds of tiny particles. All those particles floating around the planet will then make the area unusable for spacecraft and satellites. According to a new study, that scenario might unfold sooner than you’d think. Let’s take a look.
Sunday, November 17, 2024
AI Scaling Hits the Wall, Rumours Say. How Serious is it?
In the past few days we have seen a lot of rumours about troubles with AI scaling. In this video, I have a brief summary of recent events, who said what, and why I don't think AI will solve all of physics.
Saturday, November 16, 2024
Science is in trouble and it worries me.
Innovation is slowing, research productivity is declining, scientific work is becoming more disruptive. In this video I summarize what we know about the problem and what possible causes have been proposed. I also explain why this matters so much to me.
Friday, November 15, 2024
“New Evidence” That CO2 Doesn’t Cause Global Warming? I Don’t Think So.
Many viewers have asked for a review of a recent study which supposedly shows “new evidence” in the climate change “debate.” More specifically, the study’s authors claim that we need to conduct more research into whether or not carbon dioxide emissions really affect climate change. I’ve had a look.
Thursday, November 14, 2024
This New Energy Storage Idea Makes A Lot Of Sense
As we look to transition to our electric future, researchers are still stumped about how to store the electricity generated by inconsistent renewable power sources like solar and wind. In a new paper, scientists have displayed progress in storing energy by shifting the shapes of molecules, a solution that could be directly combined with photovoltaics. This idea makes a lot of sense — at least to me. Let’s take a look.
Tuesday, November 12, 2024
Dark Energy Might Be Black Holes
Recently, some astrophysicists have claimed that black holes are the source of dark energy, a force that speeds up the expansion of our universe. The idea fits well together with observations that seem to show that dark energy is getting weaker. How does this work? Let’s have a look.
Sunday, November 10, 2024
Why Our Dreams of a Final Theory Might Remain Dreams
For decades, scientists have been looking for a theory of everything, which can combine Einstein’s theories with the standard model while also explaining all masses and interactions within the standard model. In this video I explain why I have become convinced that such a theory does not exist.
This video comes with a quiz which you can take here:
This video comes with a quiz which you can take here:
Saturday, November 09, 2024
Self-Censorship is Rising, And It’s a Problem
According to multiple new surveys, many people – including scientists – censor their personal views in fear that their reputations will be damaged or that they will be harassed. Most worryingly, scientists admit to self-censorship even in academic publications. Let’s take a look at this trend and why it’s happening.
Friday, November 08, 2024
My problem with the black hole information loss problem
This is a response to some comments on my recent video about the black hole information loss problem.
Thursday, November 07, 2024
Space-Filling Aether Theory Makes Comeback
In the 19th century, scientists came up with the idea of the “aether,” a medium that filled all of space and allowed forces to travel from one place to another. While this was famously proved wrong by the Michelson-Morley experiment, the idea of the aether made a comeback. The new aether is compatible with Einstein’s theories and could explain dark energy and maybe even dark matter.
This video comes with a quiz which you can take here:
You can now also create your own quizzes on our website. We have a GPT link that lets you generate questions automatically.
This video comes with a quiz which you can take here:
You can now also create your own quizzes on our website. We have a GPT link that lets you generate questions automatically.
Subscribe to:
Posts (Atom)