Units make the difference between maths and reality, between platonic ideals and physical quantities. But what are units, really? This is one of the most underrated questions in the foundations of physics – let’s take a look.

I've tried GPT 5, Gemini Deepthink, Grok 4, and Claude Opus 4.1 to get some feedback on a physics idea.

The quantum internet seems like a waste of time and resources because the links between each node in the system are incredibly fragile and can be broken by the slightest amount of noise. But while the quantum internet might not end up delivering your email, researchers have recently claimed that it might be used to test how gravity and quantum physics interact. Let’s take a look.

Most physicists believe that time fundamentally doesn’t exist, because the concept of time is incompatible with a model of physics where quantum mechanics and general relativity coexist. David Deutsch and Chiara Marletto have now shown that “constructor theory” can be used to construct time. Let’s take a look.

The discovery of quantum mechanics has fundamentally changed not just the field of physics but also our understanding of what reality is. Let’s take a look at just what makes quantum physics so weird and why it is so hard to reconcile with our perception of physical reality.

In today’s video, I have a brief rundown of my 10 favorite physics paradoxes and big problems. If you have trouble sleeping at night, this will give you something to think about.

Physics is one of the most fascinating topics in the world (THE most fascinating one if you ask me), but media coverage of physics is full of misconceptions. In this video I debunk the top 10 most widely spread physics myths.

Over the past decade, string theorists have struggled to reconcile their elegant mathematical theory with the reality of our observable reality, inventing what has been called the string theory “swampland”. But recently, one string theory supporter published a way to bridge the gap between theory and real life. Is this a legitimate solution or not? Let’s find out.

OpenAI’s Sam Altman and other AI preachers have claimed that AI might one day “solve physics.” Is this true? What would this even mean? In this video I have a look at what current and potentially future AI could do for physics.

David Hilbert’s Sixth Problem is 125 years old and asks for an axiomatic foundation of physics. A good place to start with this, said Hilbert, would be fluid dynamics – physicists should be able to prove that our fluid dynamics equations are rooted in how we understand atoms behave when they bump into each other. This would also explain the origin of irreversibility in our lives, or the “arrow of time” as physicists like to say. Over a century later, mathematicians have made a major breakthrough in this arena. Let’s take a look.

In 2006 and 2014, the Antarctic Impulsive Transient Antenna (ANITA) detected two mysterious bursts of particles rushing upwards into space from Earth’s surface. Physicists initially brushed this off with a plausible but boring explanation, but that reasoning has now been thrown out the window. So it’s back to the drawing board, and we might be looking at new physics. Let’s take a look at how this happened and what it means for physics.

Physicists are still searching for a “theory of everything” which will cleanly explain every phenomenon in existence, in principle. According to a new paper, though, they search in vain: an all-encompassing theory of everything is mathematically impossible. Let’s take a look.

What is empty space? In this video I summarize what physics tells us about this. What really are virtual particles? What do they have to do with the vacuum energy and can we extract this energy?



This video comes with a quiz which you can take here:

In a stunning new paper, a pair of physicists argue that space could be made up of qubits, the building blocks of quantum computers, giving support to Wheeler’s “It from Qubit” idea according to which everything is ultimately qubits. Does this mean that the universe might be a quantum computer? Let’s take a look.

There are a whole lot of people with “theories of everything” – theories which supposedly explain how the whole universe works. Most of the time, these theories fall very short of that goal. Causal Fermion Systems are an approach that actually seems promising… though it still has its flaws. Today I have a brief summary of what might be the most underreported theory of everything out there.



This video comes with a quiz which you can take here:

If you keep up with science headlines, you’ve probably noticed that a new “theory of everything” pops up pretty much every week, disappearing forever after its few seconds of fame. Today I want to explain why I think these theories are constantly failing, what they might be missing, and what might be the most promising approach to date.

Einstein taught us that gravity is not a force. But in a recently published paper, researchers claim that we might have had it wrong this whole time, arguing that gravity is a force after all. They say that when treated correctly as a force, gravity can more easily be made into a quantum theory. I’ve had a look.

The double-slit experiment is a famous quantum physics experiment that shows that light exhibits behavior of both a particle and a wave. In a new paper, researchers claim they’ve proven the experiment wrong, and that light is just a particle. Instead of light also being a wave that interferes with itself they say that there are both light photons and dark photons. Let’s take a look.

This video comes with a quiz which you can take here:

A team of biomolecular engineers have come up with a new way to generate electricity from rainfall. Their method involves having rain flow through tiny tubes, and they claim that it can generate up to 100 Watts of electricity per square meter of tubes. Will this revolutionize renewable energy? Let’s find out.

Teleology is the idea that the present is the way it is because it's shaped by a future purpose. In this video, I have a look at some theories in physics that reflect this idea and see if they make sense.