MinutePhysics
MAGNETS - How Do They Work
How do magnets work? Why do they attract and repel at long distances? Is it magic? No... it's quantum mechanics, and a bit more, as we explain in this, the longest MinutePhysics video ever.
Bozeman Science
Quantum Mechanical Model
In this video Paul Andersen explains how the quantum mechanical model of the atom refined the shell model. Uncertainty of the position of the electron as well as spin forces chemists to create an improved model. In this model the...
Curated Video
Why Don’t Quantum Effects Show in Large Objects?
New ReviewThe quantum physics of large things: Macro quantum effect. Why don’t tennis balls behave like quantum particles? What happens to a baseball in a double slit experiment? This experiment shows that atoms behave like waves of probability...
Curated Video
How and Why the Four Fundamental Forces Operate
New ReviewHow does a force between particles work? What causes an attraction or repulsion? Why does electromagnetism and gravity have infinite range, but the strong and weak force have a small range? Quantum chromodynamics (QCD), and Quantum...
Curated Video
Why Atoms Form Molecules: The Quantum Basis of Chemical Bonds
New ReviewVideo on QM of Atoms which may clarify some concepts: • The Quantum Mechanical model of an atom. W... Why do atoms combine to form molecules? The quantum mechanics of chemical bonds and chemistry. How is it that we can have so many...
Curated Video
Why the Sun Shines: The Quantum Explanation
New ReviewThe mass of the sun was well understood, and translates to about 10^57 atoms. This leads to a lifetime of the sun of about 20,000 years. But we know the sun is at least 4.5 billion years old. So where does the sun's energy come from?...
Curated Video
Why the Universe Is Quantized: A Fundamental Concept in Physics
New ReviewWhat do we think the universe is quantum? What if the universe was not quantized? Classical mechanics was doing just fine after Isaac Newton reduced nearly all mechanical phenomena to a single powerful equation: F=MA, James Clerk Maxwell...
Curated Video
Why Protons Don’t Repel Each Other in Atomic Nuclei
New ReviewSince electromagnetism is so strong, multiple protons in the nucleus of any atom like Helium should repel each other very strongly. So how do they stay glued together?...Because of a force that is even stronger than electromagnetism –...
Curated Video
Exploring the Role of Light in the Universe
New ReviewWhat is the purpose of light? How does light work? Why does Light exist? There had been a controversy about whether light was particles or waves. Albert Einstein showed that light must come in discrete packets of energy which today we...
Curated Video
Why Neutrinos Matter
New ReviewAre Neutrinos useless? Would we exist without neutrinos? What are neutrinos? And what purpose do they serve? Where do Neutrinos come from? They are the second most abundant particles after photons. They do not carry a charge, and they...
Curated Video
Why Does Changing Just One Proton Change an Element?
New ReviewWhy does changing just one proton in the nucleus of an atom make a different element? How can a single proton make such a huge difference in an element’s properties? The simple answer is: The number of protons determines the number of...
Curated Video
What Existed Before the Big Bang? Theories of Quantum Creation
New ReviewQuantum Creation – what came before the big bang - the mechanism of a universe out of NO-thing - no matter, no space, and no time. Ancient Greek cosmologist Parmenides said “Nothing comes from nothing.” He was likely referring to the law...
Curated Video
The Planck Length: Why It’s the Smallest Measurable Length
New ReviewThe scale of the universe is bigger than you can imagine. It is also smaller than you can imagine. The smallest lenth theorized to be possible, the Planck length is about 4 X 10^-35 meters. Just imagine things that are about the size of...
Curated Video
What Is Reality? Exploring String Theory and the Multiverse
New ReviewWhat is reality? What is the standard model trying to tell us? Are we living in the 11 dimensions of string theory? The holy grail of physics is a theory of everything. It may show the origin of all forces coming from one master force,...
Curated Video
What Is a Particle? Quantum Field Theory Explained Visually
New ReviewAsk 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 we measure it. They are...
Curated Video
Where Does Mass Come From? Understanding Symmetry Breaking
New ReviewWhat is the origin of mass in the universe? Symmetry breaking. Symmetries in quantum mechanics result in 3 of the fundamental forces of nature - electromagnetic, weak and strong forces. However, the breaking of certain symmetries is just...
Curated Video
What Was There Before the Big Bang?
New ReviewWhat came before the Big Bang? what happened before the big bang? Since time is thought to have started at the big bang, asking what happened "before" is like asking what is North of the North pole? It may have no meaning. But there are...
Curated Video
The Fine-Structure Constant: A Number That Shaped the Universe
New ReviewThis constant represented by the Greek letter alpha is just a dimensionless number, so no matter what units you use, it will always have the same value, about 1/137. If it was different by just 4%, life may not exist. What is the Fine...
Curated Video
The Higgs Field Explained: How Particles Get Their Mass
New ReviewHow does the Higgs give mass to particles? How do elementary particles gain mass? All mass is Energy. 99% of the mass of an atom is contained in the binding energy within the nucleus. But about 1% of your mass is contained in the mass of...
Curated Video
Quantum Physics and Consciousness: Clarifying the Misconceptions
New ReviewQuantum physics simplified. Are Consciousness and Free Will linked to quantum mechanics? The double slit experiment explained. What is the difference between observation and measurement? Since Quantum Mechanics is the basis of all modern...
Curated Video
What Atoms Really Look Like: The Quantum Model Explained
New ReviewWhen Ernest Rutherford realized that atoms have a heavy nucleus, he hypothesized that the way the moon orbits earth is the same as the way an electron orbits the nucleus of atoms. We now know an atom would not look anything like this. So...
Curated Video
How Quantum Computers Work: Understanding the Mechanism
New Review(This is part 1 or at least a 2 part series on quantum computing. Each video will be successively more in-depth.) Classical and quantum computers share many general components - power supply, data storage, RAM memory, motherboard, but...
Curated Video
Why Gravity Defies Quantum Mechanics: The Ongoing Challenge
New ReviewIn 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 probabilistic. The...
Curated Video
Quantum Mechanics Explained in the Simplest Way Possible
New ReviewThis 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 would constantly lose energy...