Catalyst University
Quantum Mechanics | The Bohr Model of the Atom
What are the issues with the Bohr model of the atom (Neils Bohr)? Some issues with this mode helped early physicists invent and develop the discipline of quantum mechanics.
Professor Dave Explains
Practice Problem: The Bohr Model and Photon Wavelength
With the Bohr model we start to get a better sense of the nature of matter, particularly the way light interacts with atomic matter such that we can see it. But how do we do calculations regarding these interactions? Let's practice now!
Crash Course
The History of Atomic Chemistry: Crash Course Chemistry
How did we get here? Well, in terms of Atomic Chemistry, Hank takes us on a tour of the folks that were part of the long chain of other folks who helped us get to these deeper understandings of the world. From Leucippus to Heisenberg to...
Curated Video
What Are The Different Atomic Models? Dalton, Rutherford, Bohr and Heisenberg Models Explained
Atomic Models: Centuries ago, people didn’t know exactly what was inside an atom, but they had some “ideas”. Around 400 BC, a Greek philosopher named Democritus came up with a theory that everything in the world was made of tiny...
Bozeman Science
Atomic Models
In this video Paul Andersen explains how the atomic model has changed over time. A model is simply a theoretical construct of phenomenon and so when we receive new data we may have to refine our model. Ionization energy data resulted in...
Curated Video
Bohr's Atomic Model: Electrons in Orbit
In 1913, Niels Bohr proposed an atomic model that dramatically altered our comprehension of atomic structure by establishing a novel framework for describing the arrangement and behaviour of electrons within an atom. The purpose of...
Wonderscape
High Frequency Nouns for First Grade Reading
In this video, Juliana teaches first-grade students 16 high frequency nouns through repetition and sentence examples. The program is designed to help students become familiar with these important words that they will encounter frequently...
Curated Video
Why does chemistry happen?! Element Stability and the Octet Rule!
Why does chemistry happen?? Why do ions form?? Why do elements bond together?? These are all important questions and the answer comes back to one very important principle in chemistry and that is element stability. Elements are stable...
Curated Video
Development of the Model of the Atom
The video discusses the historical development of the model of the atom, from the ancient Greek philosopher Democritus' idea of tiny, indivisible particles to modern-day understanding of electrons, protons, and neutrons. It explains the...
Curated Video
GCSE Chemistry - History of the Model of the Atom #7
This video covers: - Democritus - Atomic Theory - John Dalton - Solid spheres - JJ Thomson - Plumb Pudding model - Ernest Rutherford - Nuclear Model - Niels Bohr - Electron shells - James Chadwick - Neutrons General info: - Suitable for...
Curated Video
GCSE Physics - Development of the model of the atom #31
This video covers: - Democritus - Atomic Theory - John Dalton - Solid spheres - JJ Thompson - Plumb Pudding model - Ernest Rutherford - Nuclear Model - Niels Bohr - Electron shells - James Chadwick - Neutrons General info: - Suitable for...
TMW Media
Normal Probability Density
This program covers the important topic of the Normal Probability Density in Probability and Statistics. We begin by discussing what the Normal Density is and why it is important. Next, we solve several problems that involve the Normal...
Professor Dave Explains
IIT/JEE Chemistry Practice #13: Atomic Orbitals/Quantum Numbers
Practice REAL problems from actual past IIT/JEE exams with Professor Dave!
Curated Video
Coulomb's Law Explained!
Coulomb’s Law is one of the most important laws when it comes to atomic structure and being able to understand and explain atomic properties. It helps to relate the force between two charged particles and can be represented by the...
Curated Video
Line Spectra: The Fingerprints of Atoms
Line spectra are unique patterns of light emitted or absorbed by atoms, resembling discrete lines. These patterns serve as the "fingerprints" of different elements, providing critical insights into atomic structure and composition....
Curated Video
Drawbacks of Rutherford's Theory
Rutherford's Nuclear Model: Limitations and Developments • Stability of Electrons in Orbit: The model failed to account for the continuous emission of electromagnetic radiation, indicating a flaw in the model. • Inability to Explain...
Curated Video
Factpack: Structure of the Atom
The different ways scientists have explained the structure of the atom, and how it has changed throughout history. Chemistry - Atoms And Bonding - Learning Points. A Twig FactPack Film. Open a discussion on what has been already learnt...
SciShow
What Does an Asymptomatic COVID-19 Infection Look Like?
Some people who get sick with COVID-19 don't feel any symptoms of the disease, but what does an asymptomatic COVID-19 infection look like?
Curated Video
Negative Energy: Understanding Hydrogen's Electron
In a hydrogen atom, the electron is bound to the nucleus, so its energy is negative. This shows that it is in a bound state. When there is negative energy, it means that the electron is stable. It is inside the atom because its negative...
Curated Video
What is an atom made of
What is an atom? And what is it made of? In this video, I will be introducing you to the atom. We will also look at concepts like atomic mass, elements and isotopes.
Professor Dave Explains
Quantization of Energy Part 2: Photons, Electrons, and Wave-Particle Duality
So Max Planck kicked things off, but how does the story of modern physics continue? With none other than your favorite scientist and mine, Albert Einstein! He did more than just stick his tongue out and have crazy hair. He elucidated the...
Catalyst University
Postulates of Quantum Mechanics: Hermitian Operators 1
Postulates of Quantum Mechanics: Hermitian Operators 1
Catalyst University
Postulates of Quantum Mechanics: Eigenvalues & Eigenfunctions
Postulates of Quantum Mechanics: Eigenvalues & Eigenfunctions
Curated Video
Periodic Trend - Atomic Size (Radius) Explained!
The periodic trend for atomic size is that the size of the atom gets bigger as you go down the periodic table and from right to left across the periodic table. This trend is sometimes referred to as atomic radius as there is a direct...