This type of pin hole camera (no film) is called a camera obscura, Latin for “dark chamber”. The first camera obscuras were small rooms that were completely dark except for a tiny hole in a wall that let in a dot of sunlight. People in the room saw a image of the trees and sky [...]
Tag archives for Light
Web Quest: Light Fantastic
What would our lives be without light? We need it to see everything we do in every moment of the day. We rely on light to read a book, cross the street, admire artwork, watch the sunset, and look into faces. Light plays a role in some of our most sophisticated technology. It enables our [...]
category: Science
Bending Light (Refraction): Soap Bubbles
Light travels in straight lines from its source. While it looks white to our eyes, light is made up of a whole spectrum of colours. Our eyes can see only a small portion of the entire spectrum. We see light as Red, Orange, Yellow, Green, Blue, Indigo and violet (Roy G. Biv).
When light rays move from [...]
Creating an Imitation Rainbow Spectrum
Today in class we created an Imitation Rainbow Spectrum using just the primary colours RED, YELLOW and BLUE. We could have done this using paint but it is very limited, unless you spend a lot of time with the creation. A far more impressive spectrum can be created following the procedure below.
Goal: Creating an Imitation [...]
What causes a rainbow?
One of the most important experiments on light was made by Isaac Newton. He was the greatest of all English men of science. He discovered that sunshine (white light) is made up of many colours. Over 300 years ago, Sir Isaac Newton passed a beam of white light through a prism. A prism is a [...]
category: Class Work, Science
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