MinutePhysics
2012 Nobel Prize - How Do We See Light
What was the 2012 Nobel Prize in physics given for? Capturing a single photon of light!
SciShow
The Search for Antimatter
If you don't have any idea what antimatter is, you don't have to feel bad - the brightest minds in the world have only recently begun to understand what it is and how it works. Hank gives us the run down on what we know about antimatter,...
MinutePhysics
How lasers work (in theory)
How does a laser really work? It's Bose - Einstein statistics! (photons are bosons)
Bozeman Science
Photons
In this video Paul Andersen explains how light travels in photons which can be described as both particles and waves. Einstein showed that photons can be described as particles using the photoelectric effect to show that the energy of a...
SciShow
Why Am I Upside-Down When I Look in a Spoon?
We'd like to know why you're staring at yourself in a spoon in the first place. But we can at least answer the question of why you look upside-down when you do.
SciShow
Electromagnetism - Magnetic Force: The Four Fundamental Forces of Physics #4b
In this final segment on the four fundamental forces of physics, Hank tackles the magnetic force, the second of the two ways in which electromagnetism is apparent in the universe
Crash Course
Photosynthesis: Crash Course Biology
Hank explains the extremely complex series of reactions whereby plants feed themselves on sunlight, carbon dioxide and water, and also create some by products we're pretty fond of as well.
SciShow
Using Sunlight to Propel Spaceships
When scientists are planning missions, they sometimes have to take into account the fact that the light from the Sun pushes on the spacecraft. But with solar sails, they can also use that pressure to propel the craft along.
Bozeman Science
Wave-Particle Duality of Light
In this video Paul Andersen explains how light can be treated as both a particle and a wave. Physicists use scale to determine which model to use when studying light. When the wavelength of light is equivalent to the size of the object...
Bozeman Science
Emission and Absorption Spectra
In this video Paul Andersen explains how the photons emitted from or absorbed by an atom or nuclei is directly related to electrons moving between energy level. Absorption and emission are a direct result of the conservation of energy....
SciShow
Electromagnetism - Electrostatic Force: The Four Fundamental Forces of Physics #4a
Hank reaches the fourth and final of the four fundamental interactions in physics: electromagnetism. In this part, he teaches us about the electrostatic force, which builds up a charge in an object and can travel in the form of an...
Curated Video
How lasers are used to treat cancer
In medicine, we use different types of lasers to fight cancer. In this video, we will learn everything about carbon dioxide (CO2), argon and neodymium: yttrium aluminum garnet (Nd:YAG) lasers and how they are used to treat cancer in a...
Curated Video
Photon
A particle of light or other electromagnetic energy. A Twig Science Glossary Film. Key scientific terms defined in just 60 seconds using stunning images and concise textual definitions. Twig Science Glossary Films reinforce abstract...
Curated Video
Spontaneous emission
The process in which an atom or molecule produces a photon of light when it undergoes a spontaneous transition from an excited state to a lower energy level. A Twig Science Glossary Film. Key scientific terms defined in just 60 seconds...
Curated Video
Aurora
Also known as the Northern or Southern Lights. Natural displays of light in the polar regions, clearly visible in the night sky. A Twig Science Glossary Film. Key scientific terms defined in just 60 seconds using stunning images and...
Curated Video
Quantum
A fixed amount of energy absorbed or released in an exchange of energy, or the smallest unit of any entity involved in an interaction. A Twig Science Glossary Film. Key scientific terms defined in just 60 seconds using stunning images...
Curated Video
Moon Measuring
The ingenious system to measure the distance to the Moon involving Apollo astronauts, lasers and a unique mirror system planted on the lunar surface. Physics - Our Solar System - Learning Points. In 1969, the Apollo 11 astronauts left an...
Curated Video
How Do Lasers Work?
Concentrated light can be incredibly powerful and useful. Learn how laser beams are produced by controlling how atoms emit photons of light. Physics - Waves - Learning Points. Lasers are photons of the same frequency going in the same...
Curated Video
Northern Lights
Discover how the chemical reactions which produce the extraordinary colours of the Northern Lights have their origins in outer space. Chemistry - Atoms And Bonding - Learning Points. Aurora Borealis, or Northern Lights, is a natural...
Curated Video
Stimulated emission
As distinct from spontaneous emission, stimulated emission is the process in which a photon is emitted from an atom or molecule when hit by another photon of the right energy. A Twig Science Glossary Film. Key scientific terms defined in...
Science ABC
Why Do Stars Seem To Have 5 Points (Corners)?
When light emitted from a distant object reaches another object or opening, its waves are bounced or bent slightly around the object and interfere with each other to produce various patterns on whatever they ultimately fall on. For...
Higgsino Physics
The sad story of travelling the speed of light
The speed of light and black holes. What happens when at the speed of light? What about a black hole? This video explains how time dilations works with very fast relativistic speeds. The equation and the intuition behind the logic.
Curated Video
Predicting the Higgs Boson
Particle physicist Nima Arkani-Hamed (Institute for Advanced Study) describes how physicists knew that the Higgs boson had to be there before any experiment.
Curated Video
Astonishingly Simple
Renowned particle physicist Nima Arkani-Hamed, Institute for Advanced Study, describes how he believes that the surprisingly simple final form of a large class of complex calculations is a clue to how we can move forwards towards...