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...

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...

In this video Paul Andersen explains how ray diagrams can be used to determine the size and location of a reflected image. Ray diagrams for plane, concave, and convex mirrors are included.

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...

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 explains the concepts of myopia and hyperopia and how they can be corrected using concave and convex lenses. It also provides a simulation tool to help students understand the focal length, position, nature, and size of images...

Physics Girl riddle: what happens to your image if you bend a spoon from concave to convex?

The video is a lecture on convex lenses, explaining the way they work to bend and focus light. The speaker defines what a lens is, describes how convex lenses function, explains how to construct a ray diagram with a convex lens, and...

It explains the nature of images formed by different types of plane mirrors.

In this video the focus is on where and why concave mirrors are used, as well as the image formation and types of images. Students will learn that concave mirrors are used in many ways to magnify objects, create real and virtual images...

This video explains the science behind reflection in plane mirrors, including the formation of virtual and real images, lateral inversion, and the properties of upright and erect images. It also includes an activity to identify letters...

Using animation and real world examples, this video explores the change in kinetic energy of particles with heating and cooling that produces expansion and contraction and change in density in matter. Students will observe and come to...

This is the first-ever image released of a black hole.



The picture was unveiled at simultaneous press conferences across the world on Wednesday, including one in Europe that you can watch...

This is the first-ever image released of a black hole.



The picture was unveiled at simultaneous press conferences across the world on Wednesday, including one in Europe that...

AI image detectors are growing in popularity as a way to determine whether an image or video shared online is real or not. CBC News’ Visual Investigations team tested some of the most popular free tools online to see how effective they...

Lightnings behind clouds