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!
TED-Ed
TED-Ed: How do glasses help us see? - Andrew Bastawrous and Clare Gilbert
Today, glasses help millions of people with poor vision be able to see clearly. But how? Andrew Bastawrous and Clare Gilbert help unravel the answer by explaining refraction - the ability of a transparent medium, like glass, water, or...
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...
TED-Ed
TED-ED: The evolution of the human eye - Joshua Harvey
The human eye is an amazing mechanism, able to detect anywhere from a few photons to a few quadrillion, or switch focus from the screen in front of you to the distant horizon in a third of a second. How did these complex structures...
Crash Course
Ancient Egypt Crash Course World History
In which John covers the long, long history of ancient Egypt, including the Old, Middle and New Kingdoms, and even a couple of intermediate periods. Learn about mummies, pharaohs, pyramids and the Nile with John Green.
SciShow Kids
Don’t Be Afraid of Spiders!
A SciShow Kids viewer wants to know more about spiders so she’s not afraid of them anymore. And know what? They’re not scary! They’re awesome!
Curated Video
Ancient Egypt: Crash Course World History
In which John covers the long, long history of ancient Egypt, including the Old, Middle and New Kingdoms, and even a couple of intermediate periods. Learn about mummies, pharaohs, pyramids and the Nile with John Green.
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
I WONDER - How Do The Eyes Work?
This video is answering the question of how do the eyes work.
Curated Video
Implantable Lens: Restoring Vision for Better Quality of Life
Implantable lens surgery is a revolutionary procedure that offers hope to individuals with poor eyesight who are not suitable candidates for laser surgery. By implanting a thin, soft lens in front of the iris, patients can experience...
Curated Video
Understanding the Anatomy and Function of the Eye
In this video, the teacher explains the structure and function of the eye, as well as the different classifications of iris colors. They also discuss how the eye processes light and forms images, and why some people may need glasses due...
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
Telescopes
Telescopes have enabled us to truly see the wonders of the Universe. Who invented them and how have they developed throughout history? Physics - Universe - Learning Points. The first optical telescopes were made around 1608. Early...
Curated Video
How We See Part 2: Brain
Only a small part of what the eye 'sees' is in focus. To turn the image on the retina into complete vision the eye needs help from the brain. Biology - Being Human - Learning Points. The brain processes the raw information coming from...
Curated Video
Manipulating Light
When light hits something, a number of things can happen: it can be reflected, refracted, diffracted or absorbed. But what does this mean? Physics - Waves - Learning Points. Manipulation of light is vital to our survival. Light waves...
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
How We See Part 1: Eyes
The process of seeing is a collaboration between the brain and the eye. How does the eye work to create sight, from the lens and iris to the pupil, retina and optic nerve? Biology - Being Human - Learning Points. A far larger part of the...
Curated Video
Dissection: Eye
We dissect and examine the different parts of a sheep's eye. These include the iris, retina, aqueous humour, vitreous humour, optic nerve and the lens. The lens is also used to distort the pattern on a piece of card to demonstrate how it...
Curated Video
Focus
In optics, the point at which rays of light converge after refraction or reflection, and so the point at which a sharp image will be produced. A Twig Science Glossary Film. Key scientific terms defined in just 60 seconds using stunning...
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...
Wonderscape
Spiders: Unraveling Arachnid Mysteries
Explore the fascinating world of spiders, distinct from insects, as this video explains their unique features. Learn about spiders' arthropod classification, their two-segment body structure, and their simple eyes compared to insects'...
Curated Video
Examining Causes and Impact of High Rates of Cataracts in Rural Ethiopia
Dr. Larry Thomas visits Sir Eldryd Parry at the Royal Society of Medicine in London to understand the high rate of cataracts in rural Ethiopia. Dr. Parry emphasizes that clean water is crucial for preventing various health issues,...
Curated Video
The Life-Changing Impact of Cataract Surgeries in Rural Ethiopia
This video highlights the plight of young people suffering from cataracts in rural Ethiopia and the life-changing impact of surgeries performed by Dr. Bora and his team. We meet a recently blind, young mother and learn about the...