July 2013
Beginner
208 pages
4h 45m
English
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Understanding Light and Colour
Light travels in waves. The eye is able to perceive colour because each colour has a wave of different lengths. Reds have the longest wavelengths and blues the shortest. When light is passed through a glass prism its waves split according to their length and can be ‘seen’ as separate colours – red, orange, yellow, green, blue, indigo and violet – always in that order, the order of the rainbow. The human eye is able to perceive certain light wavelengths which enable us to see these colours.
Light is absorbed or reflected by surfaces. If most of the light is reflected, we ‘see’ white; if most is absorbed, we ‘see’ black. The colour we perceive depends on how much light is reflected and how much is absorbed by the ...
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.