Lenses are famous for their ability to bend light rays — to make smaller things look bigger, big things look smaller...even create a super bright beam of light that warns ships where the shore is. And some lenses, such as fresnel...

Engineer RA Mashelkar shares three stories of ultra-low-cost design from India that use bottom-up rethinking, and some clever engineering, to bring expensive products (cars, prosthetics) into the realm of the possible for everyone.

Your friend just tagged you in 17 photos on Facebook but you swear those photos lie about your weight. Is the camera playing tricks with your eyes?

Alwar Balasubramaniam's sculpture plays with time, shape, shadow, perspective: four tricky sensations that can reveal -- or conceal -- what's really out there. At TEDIndia, the artist shows slides of his extraordinary installations.

Sometimes the most intimidating part of making a movie is that little box of concentrated technology called "The Camera." But, FEAR NOT! In this episode of Crash Course Film Production, Lily helps us dissect the basics of modern movie...

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...

Before you take your relationship with space to a new level by getting a telescope, find out what you really need to make the most of your summer nights staring at the sky.

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...

Learn how to see invisible air currents with this amazing optical setup!

This video provides an informative explanation of the concept of focal length in lenses. The instructor begins by clarifying the distinction between focal length and focal distance, emphasizing that focal length refers to the...

The video titled "The Parts of a Camera" explores the essential components of a camera and how they impact the quality of photographs. The video starts by explaining how light enters the camera through the shutter and gets...

Howcast - Learn how to use digital camera macro modes and lenses from commercial photographer Dan Bracaglia in this digital photography lesson from Howcast.

Howcast - Learn about digital camera prime lenses versus zoom lenses from commercial photographer Dan Bracaglia in this photography lesson from Howcast.

Howcast - Learn about beginner camera kits from commercial photographer Dan Bracaglia in this digital photography lesson from Howcast.

Howcast - Learn seven basics about digital camera lenses from commercial photographer Dan Bracaglia in this photography lesson from Howcast.

Howcast - Learn about the best portrait lenses from professional photographer Joe Sinnott in this Howcast photography tutorial.

Pupil outcome: I can explain how light from an object can be focused by a converging lens to form an image. Key learning points: - Some of the light from objects can pass through a lens and become focused to form an image on a screen. -...

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 -...

Learn how to create a turntable camera animation using the level sequencer in Unreal Engine 5. This video will explore various techniques for animating a rotating camera around a focal point, allowing you to showcase your environment...

In this video I break down the key points of understanding I want you to have when learning how to write the equation of a parabola.



⭐ Before learning conic sections know this.... -...

Learn how to eliminate star trails in this quick astrophotography tutorial. In this video I cover the "500 Rule" and "NPF Rule," two ways to eliminate star trailing that can creep up in your photos. Link to spreadsheet with pixel...

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.