Sometimes looking into a pool of a toxic liquid holds the secrets of the universe–or maybe just this one time.

Normal maps are useless inside black holes. At the event horizon - the ultimate point of no return as you approach a black hole - time and space themselves change their character. We need new coordinate systems to trace paths into the...

Lurking in the depths of the mathematics of Einstein's general relativity is an object even stranger than the mysterious black hole. In fact it's the black hole's mirror twin, the white hole. Some even think that these could be the...

This video is brought to you by the Child and Teen Checkups program of the Minnesota Department of Health.

What really happens when you approach the event horizon of a black hole?

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...

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...

2 minute video describing convex and concave mirrors and lenses

This video explains the phases of the moon.

The appearance of patches of different colors on roads on a rainy day is due to a combination of oil, water, and light rays. When it rains, the oil on the road comes in contact with water, and the light rays bounce off the surface of the...

A transparent object with flat surfaces that refracts light.
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A Twig Science
Glossary Film.
Key scientific terms defined in just 60 seconds using stunning images and concise textual definitions. Twig Science...

The appearance of patches of different colors on roads on a rainy day is due to a combination of oil, water, and light rays. When it rains, the oil on the road comes in contact with water, and the light rays bounce off the surface of the...

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 -...

This video covers:

- How to draw ray diagrams for convex and concave le
nses
- How to comment on whether an image is real or virtual, upright or inverted, and bigger or smaller than t

he object.

Exam
board...

In this video we cover:

- The three things that may happen when a wave hits the boundary between two mate
rials
- How to draw ray diagrams, including the angle of incidence, the normal, and the angle of...

This video covers:

- How the eye focusses light onto the retina, which is known as accommod
ation
- How the ciliary muscles and suspensory liga

ments work

Exam
board specific info:
AQA
- Separate science...

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....

This video is the first of two lecture presentations on the structure and function of the eye. The presenter gives an overview of what the eye is and how it functions as a sensory receptor for detecting changes in light intensity. The...

Panelists Sheperd S. Doeleman, founding director of the Event Horizon Telescope (EHT), which produced the first image of a black hole, and Michael Johnson, astrophysicist, Harvard-Smithsonian Center for Astrophysics, answer questions...

This video explains myopia and hyperopia, commonly known as short and long-sightedness. The video effectively explains the science behind these conditions and how they can be corrected with the use of concave and convex lenses.

This is a lecture presentation on how the eye forms a clear, sharp image on the retina at the back of the eye. The lecture also explains the process by which the eye changes to focus on near and distant objects, accommodation. The...

This video explains the process of accommodation, which is the ability of the eye to focus on objects at different distances. The video also highlights two common eye conditions, hyperopia and myopia, and suggests ways to overcome them,...

This video provides a detailed explanation of the structure and function of the eye, including the role of sensory receptor cells and the various parts of the eye such as the sclera, cornea, pupil, iris, lens, ciliary muscles, suspensory...

This video explores the concept of optical camouflage and the use of retroreflective materials to create the illusion of invisibility. It showcases the works of artist Desiree Palmen and the invention of the Invisible Cloak illusion by...