Professor Dave Explains
The Quantum Barrier Potential Part 2: Defining the Transmission and Reflection Coefficients
In the previous tutorial we introduced our second quantum problem, that of the quantum barrier potential. Again, this involves a free particle that encounters a barrier of finite potential. We've already solved the Schrödinger equation...
Curated Video
Introduction to Oxidation, Reduction, and Half Equations
The video covers oxidation, reduction, and half equations. The speaker explains the concepts of oxidation and reduction, and how they relate to gaining or losing electrons. They also discuss balancing half equations and identifying...
NASA
Solar Wind at Martian Moon Could Impact Future Missions
Mars has two moons, Phobos and Deimos. Both are small, airless bodies with irregular shapes. Because they lack protective atmospheres and magnetospheres, Phobos and Deimos are directly exposed to the solar wind for part of their orbits....
NASA
NASA | Goddard's Speedy MMS Instruments Will Measure Mysterious Physics
Host Katrina Jackson talks with Craig Pollock and Ulrik Gliese about Goddard's contribution to the Magnetospheric Multiscale mission - the Fast Plasma Investigation suite of instruments. These instruments will study a little-understood...
Professor Dave Explains
Hunsdiecker Reaction
This reaction comes to us thanks to a German husband and wife chemist team! Isn't that romantic? And it allows us to convert a carboxylic acid into an alkyl halide, which is very neat. Oh, and there's radical chemistry! Of course you...
FuseSchool
How Do Atoms Bond
Learn the basics about how atoms bond when learning about the structure of atoms. Bonds form by the attraction of negatively charged electrons and the positive nucleus of atoms. Atoms have a positively charged tiny nucleus which contains...
FuseSchool
Atoms Practice Exam Question 1
Work through this practice GCSE / K12 question on atomic number, atomic mass and electronic configuration. Read the question, and hit pause if you want to try answering it yourself. Then hit play again to watch how the teacher solves it.
NASA
Discovering the Sun's Mysteriously Hot Atmosphere
Something mysterious is going on at the Sun. In defiance of all logic, its atmosphere gets much, much hotter the farther it stretches from the Sun’s blazing surface. Temperatures in the corona — the Sun’s outer atmosphere — spike to 3...
Curated Video
Understanding Electronic Configurations of Atoms and Ions
This video discusses the electronic configuration of atoms and ions, and how the positioning of elements in the periodic table affects their electronic structure. It further discusses the electronic configuration of different elements...
Physics Girl
This thing is -270°C and is EVERYWHERE
The universe is microwaving itself. A mystery signal discovered in the 1960s led to a Nobel prize. In this video, Dianna explores one of the most mysterious discoveries in physics - a constant microwave signal that seemed to be coming...
Catalyst University
Light-Harvesting Photosynthetic Pigments and Exciton Transfer
Light-Harvesting Photosynthetic Pigments and Exciton Transfer
msvgo
Preparation of Amines: Reduction of nitro compounds
It explains six methods of preparation of amines with the help of associated chemical reactions.
Professor Dave Explains
Carbon: The Element of Life
You may have heard that carbon is the element of life. What does that mean? Let's find out!
National Institute of Standards and Technology
NIST Unscripted: Eric Cornell
Eric Cornell, NIST Fellow and Nobel Laureate tells the exciting story of how he and colleague Carl Weiman made the first-ever observation of a new state of matter, the Bose-Einstein condensate, in 1995. The breakthrough led to the duo,...
NASA
NASA | Terrestrial Gamma-ray Flashes Create Antimatter
NASA's Fermi Gamma-ray Space Telescope has detected beams of antimatter launched by thunderstorms. Acting like enormous particle accelerators, the storms can emit gamma-ray flashes, called TGFs, and high-energy electrons and positrons....
Curated Video
Voltage Explained
Voltage explained. What is voltage and what does it do? In this video we discuss how it work and its purpose to understand how electricity works. We'll look at voltage for both alternating current and direct current starting off very...
Curated Video
How Thermocouples Work
Thermocouples, learn how thermocouples work in this video. We'll cover types of thermocouples, applications of thermocouples, the physics behind thermocouples as well as experiments to show how it works.
Professor Dave Explains
Examples of s-p Mixing in Molecular Orbital Theory
Admittedly, my prior tutorial on MO theory was a little confusing, and had some errors. I wanted to make things right, so here's another one! This will clarify some of the basic concepts, and will also extend them to discuss a new...
Curated Video
Why Are Resistors Used
In this video, we're going to answer the question: Why are resistors used?
Let's Tute
Introduction to Electricity: Understanding Current, Voltage, and Resistance.
This video explains the basics of electricity, including the flow of electric current and its relationship to voltage and resistance. Using a simulator, viewers can see how different materials and resistors affect the flow of current and...
Curated Video
How Transformers Work
How do transformers work? find out here in this video on how transformers work the basics.