Bozeman Science
Wave Diffraction
In this video Paul Andersen explains how waves will diffract (or bend) around an obstacle or while traveling through and opening. Diffraction will be maximized when the size of the opening or obstacle matches the wavelength.
SciShow
How Do Rainbows Form?
SciShow explains how three important ingredients -- sunlight, water, and you -- interact to create the illusion of a rainbow. The colorful details are inside!
SciShow
Is the Universe Expanding?
Is the universe expanding? About a hundred years ago astronomers made a discovery that helped us unravel the mystery of the history of the universe!
SciShow
The Science of Getting (and Getting Rid of) a Tattoo
Why are tattoos permanent? How do you deliver the ink? And how do you remove a tattoo if you no longer want it?
Bozeman Science
Interference Patterns
In this video Paul Andersen explains how constructive and destructive interference can create interference patterns. Interference patterns can be created by all types of waves, including water, sound, and light. A classic experiment that...
Bozeman Science
Light
Paul Andersen explains how natural selection is a major mechanism in evolution. The video begins with a discussion of Charles Darwin and the details of natural selection. The data of the peppered moth during the industrial revolution is...
Bozeman Science
Matter as a Particle
In this video Paul Andersen explains how matter, like light, can be treated as both a particle and a wave. Louis de Broglie proposed that matter could act as a wave and described the wavelength of matter as a function of Planck's...
TED-Ed
TED-Ed: Sajan Saini: How light technology is changing medicine
It's an increasingly common sight in hospitals around the world: a nurse measures our height, weight, blood pressure, and attaches a glowing plastic clip to our finger. Suddenly, a digital screen reads out the oxygen level in our...
TED-Ed
TED-Ed: Light waves, visible and invisible - Lucianne Walkowicz
Each kind of light has a unique wavelength, but human eyes can only perceive a tiny slice of the full spectrum -- the very narrow range from red to violet. Microwaves, radio waves, x-rays and more are hiding, invisible, just beyond our...
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
Black Body Mystery: The Radiation Phenomenon
Black body radiation is a fundamental topic in physics that has significantly influenced our understanding of quantum mechanics. A black body is an idealized physical object that absorbs all electromagnetic radiation, regardless of...
Curated Video
Light Waves: Understanding the Wave Nature
We deal with light on a daily basis, and it has wave-like characteristics that are essential to many natural and technological processes. The wave nature of light aids in the explanation of a number of important optical phenomena,...
Curated Video
Revolutionary Technology for Accurate Vehicle Occupancy Counting
Laser Optical Engineering at Loughborough University has developed an innovative technique for accurately counting the number of people inside moving vehicles. Unlike traditional methods that require large staff or expensive...
Curated Video
Wavelength
The distance between corresponding points on two successive waves, and therefore the length of a complete cycle of a wave. A Twig Science Glossary Film. Key scientific terms defined in just 60 seconds using stunning images and concise...
Curated Video
Spectrometer
An instrument that measures the intensity of electromagnetic radiation over a range of wavelengths. A Twig Science Glossary Film. Key scientific terms defined in just 60 seconds using stunning images and concise textual definitions. Twig...
Curated Video
Electromagnetic spectrum
The complete range of wavelengths, considered as a continuum, of all kinds of electromagnetic radiation. A Twig Science Glossary Film. Key scientific terms defined in just 60 seconds using stunning images and concise textual definitions....
Curated Video
Electromagnetic radiation
A wave with both magnetic and electrical field components, which oscillate perpendicular to each other. A Twig Science Glossary Film. Key scientific terms defined in just 60 seconds using stunning images and concise textual definitions....
Curated Video
Factpack: Redshift
Discover how different wavelengths allow scientists to measure the distance to the stars. Physics - Universe - Learning Points. A Twig FactPack Film. Open a discussion on what has been already learnt in a topic, or use to grab attention...
Curated Video
Antenna
A transmitter or receiver that converts alternating electric currents into electromagnetic waves, or vice versa. A Twig Science Glossary Film. Key scientific terms defined in just 60 seconds using stunning images and concise textual...
Curated Video
Transparent
Capable of transmitting light, or more generally something that allows radiation to pass through relatively unhindered. A Twig Science Glossary Film. Key scientific terms defined in just 60 seconds using stunning images and concise...
Curated Video
Ultraviolet light
Electromagnetic radiation in the region of the spectrum between visible light and x-rays, about ten to 400 nanometres in wavelength. A Twig Science Glossary Film. Key scientific terms defined in just 60 seconds using stunning images and...
Curated Video
How Do Mobile Phones Work?
Microwaves are not only used to heat food. Mobile phones utilise this type of electromagnetic radiation, allowing us to communicate over large distances. Physics - Waves - Learning Points. Mobile phones work by converting the sound into...
Curated Video
Why is the Sky Blue? - Sky Color Explained
The atmospheric composition of the sky affects the colours we see. From blue horizons to red sunsets, why do we see colours the way we do? Physics - Our Solar System - Learning Points. Light is made up of different wavelengths. Our...
Curated Video
What is a Rainbow? - Light Refraction
What is refraction and how does it produces the colours and shape of a rainbow? Earth Science - Weather - Learning Points. Rainbows are beautiful tricks of the light. Rainbows are caused when light is reflected and refracted by water....