SciShow
How 19th Century Lighthouses Power Advanced Space Drives
The technology we use for space exploration gets more advanced all the time, but some of our most ambitious programs actually rely on optics invented in the 19th century for lighthouses.
SciShow
Algae Might One Day Rule the World
Algae is one of the oldest and most abundant forms of life on planet Earth, so it only makes sense that it offers a ton of solutions to unsustainable modern problems. Here are five ways in which algae continues to reshape the world.
SciShow
Microscope: The Tube That Changed the World
Humans have long known that glass bends light. However, it took us awhile to figure out that stacking lenses in a tube would open up a whole new world to science, finally allowing us a peek at the microscopic.
Bozeman Science
Ray Diagrams - Lenses
In this video Paul Andersen explains how ray diagrams for lenses can be used to determine the size and location of a refracted image. Images may be either real or virtual images. Ray diagrams for converging and diverging lenses are...
Crash Course
Geometric Optics: Crash Course Physics
LIGHT! Let's talk about it today. Sunlight, moonlight, torchlight, and flashlight. They all come from different places, but they’re the very same thing: light! It’s what makes it possible for us to see the world around us, so it’s worth...
SciShow
Microscope The Tube That Changed the World
Humans have long known that glass bends light. However, it took us awhile to figure out that stacking lenses in a tube would open up a whole new world to science, finally allowing us a peek at the microscopic.
SciShow
How Do Polarized Sunglasses Work?
The useful glare-blocking properties of polarized sunglasses are well-known to just about anyone who goes outside. What isn't so well-known is how they reduce glare in the first place. That answer is deceptively complicated!
Crash Course
Optical Instruments: Crash Course Physics
How do lenses work? How do they form images? Well, in order to understand how optics work, we have to understand the physics of light. In this episode of Crash Course Physics, Shini talks to us about optical instruments and how they make...
Curated Video
Invention and evolution of the microscope
Since the invention of the first light microscope, microscopy has evolved so much. We are now able to see things at an atomic level. In this video, we will learn who invented the light microscope and the many other breakthroughs that...
Curated Video
Exploring the Microscopic World: Introduction to Microscopes and Magnification
In this video, we explore the world of microscopes and how they magnify objects down to the cellular level. We learn about compound microscopes, their lenses, and how they work to make objects appear larger. Discover how scientists use...
Curated Video
Lens
A transparent material shaped to refract light, such that it converges or diverges from a single point. A Twig Science Glossary Film. Key scientific terms defined in just 60 seconds using stunning images and concise textual definitions....
Curated Video
Concave
Curving inwards, like the inside of a bowl. 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 concepts and...
Curated Video
The History of the Microscope
A brief history of how the microscope has transformed from simple magnifying glasses to the powerful instruments of today. Biology - Cells And DNA - Learning Points. The Romans produced the first magnifying glasses in the 1st century AD....
Curated Video
Inventions to Save the Planet
Discover some geo-engineering techniques that scientists are developing to manipulate Earth's climate. What are they and how would they work? Earth Science - Human Impacts - Learning Points. Geo-engineering strives to use technology to...
Curated Video
Telescope
An optical device that uses lenses or mirrors to magnify and observe distant objects. A Twig Science Glossary Film. Key scientific terms defined in just 60 seconds using stunning images and concise textual definitions. Twig Science...
Curated Video
History of the lighthouse
Explore the history of lighthouses. Physical processes -Light - Light sources Learning Points Reflectors can be used to concentrate the brightness of light sources. Lenses refract, or bend light and concentrate it into a beam. A Twig...
Bedtime History
Antonie van Leeuwenhoek for Kids | Bedtime History
Antony van Leeuwenhoek was a Dutch scientist and a pioneer in the field of microbiology. Often referred to as "the Father of Microbiology," he was the first to observe and describe microorganisms using a microscope that he designed and...
Curated Video
Optometrists use math? - The surprising ways that an eye doctor uses math everyday for kids!
Ever wondered how math is used in the real world? Join us in this fascinating episode as we dive into the world of optometry with Dr. Ann Morrison, a renowned optometrist and professor at Ohio State University. In this engaging...
Curated Video
GCSE Physics - How Lenses Work #69
This video covers - The difference between convex and concave lenses - What 'principal focus' and 'focal length' are - The difference between real and virtual images Exam board specific info: AQA - Separate science only IGCSE Edexcel -...
Curated Video
GCSE Biology - What is Microscopy? #5
In this video, we cover: - The different parts of a microscope - What the terms image, object, magnification and resolution mean Exam board specific info: AQA - Suitable for everyone IGCSE Edexcel - Suitable for everyone Edexcel -...
Curated Video
Now I See It
Dr. Forrester examines the history of the telescope and discusses the parts of the telescope and the functions of each. She also explores different types of space technology such as the telescope, satellite, rocket, and space probe.
Curated Video
Shades of Perception - The Effect of Coloured Filters on What We See
In this fun animation, you will learn how light behaves when it passes through a coloured filter. The video uses different coloured sunglasses to explain that coloured filters allow only certain colours of light to transmit through them....
Curated Video
I See You
“I See You” describes the parts of the human eye that process light and allow people to see.
Curated Video
Parts of a Microscope
Parts of a Microscope explores the importance of magnification by investigating the components and functions of microscopes.