If a tree falls in a forest and no one is around to hear it, does it make a sound? Philosopher George Berkeley asked this famous question in 1710, and people are still debating it.



Where is the forest...

Electromagnetic waves are fundamental to understanding the nature of light and are oscillations of electric and magnetic fields that travel through space, carrying energy from one place to another. The spectrum of light is a...

This video is about using Bohmian trajectories to visualize the wavefunctions of hydrogen orbitals, rendered in 3D using custom python code in Blender.

Heat can be transferred from place to place by conduction, convection and radiation. Today though we'll be focusing on radiation. All objects emit and absorb thermal radiation, which is also called infrared radiation. Even we do, just a...

This video is about how the way we describe the world can influence the way we perceive it. In particular, with regards to Bohmian mechanics, Schrodinger wave functions, Feynman path integrals, and Galilean...

So, how do you take a picture of a black hole? The beast in question is the supermassive black hole in the center of this – the M87 elliptical galaxy. It has an estimated mass of several billion times that of the Sun, which gives it an...

It took about a century for black holes to go from impossible, to theoretical, to real. And it was just this year, in 2019, when we finally saw the first picture of a black hole! But how to you take a photo of something so massively...

Nobel Laureate in Physics Roger Penrose (Oxford) relates his longstanding bemusement at why the early universe was in such a peculiar low state of entropy.

Physicists know how to use the equations of quantum mechanics to predict things, but don't really understand what is fundamentally going on.



The primary challenge is that according to the...

This video explains Quantum Mechanics intuitively. Classical mechanics failed to describe how an electron could orbit an atom. An accelerating charge always creates electromagnetic radiation. This means it...

SUMMARY

What if time is not real, but an illusion? Isaac Newton believed time was absolute and ticked at the same rate for everyone, everywhere. But Albert Einstein shattered that view with the theory of relativity....

I'm going to be covering the entire AQA GCSE physics course this way. So, if you have any questions about it, leave a comment and I will reply to it as soon as possible. Thanks for watching! Script: Heat can be transferred from place to...

When you picture a rocket, you might imagine a giant ship carrying lots of fuel, people and supplies. But what if the next wave of spacecraft were small enough to fit into our pockets? Dhonam Pemba details the future of microspacecraft,...

SUMMARY

Why does the speed of light change in different media? or Does it? How photons always travel at the same speed, but the speed of light cha

nges.

In 1905 Einstein proposed the theory of special...

In a classical universe, if we knew all the positions and velocities for all particles, we could predict the future and the past. Quantum mechanics is not like this. It shows that reality is not deterministic but is...

Ask 10 physicists what a particle is: you'll get 10 different answers. Quantum mechanics showed via the Schrodinger equation, that quantum objects are not particles but waves smeared out in space, until the moment...

Why are Stars Star-Shaped

Why are Stars Star-Shaped

Nobel Laureate Roger Penrose, University of Oxford, describes a profound puzzle that he's been wrestling with throughout his entire research career: how is it possible that the universe began in a peculiar state of both minimum and...

James Webb captures infrared light, which allows us to see billions of light years away. Some galaxies would not be visible otherwise, because their light has redshifted beyond visible light spectrum due to the...

Most disorders both mental and physical are managed and not cured. In medicine we think of cure as a total reversal of an illness to the point where there's no evidence of it and it does not return. the closest we get to this...