Download - Seeing in colour
![Page 1: Seeing in colour](https://reader035.vdocuments.us/reader035/viewer/2022062502/5681675d550346895ddc2d7c/html5/thumbnails/1.jpg)
Seeing in colour
• Stare at the coloured dot in the middle of the next picture for a minute.
• Then describe what you see when you look at the next slide.
![Page 2: Seeing in colour](https://reader035.vdocuments.us/reader035/viewer/2022062502/5681675d550346895ddc2d7c/html5/thumbnails/2.jpg)
![Page 3: Seeing in colour](https://reader035.vdocuments.us/reader035/viewer/2022062502/5681675d550346895ddc2d7c/html5/thumbnails/3.jpg)
![Page 4: Seeing in colour](https://reader035.vdocuments.us/reader035/viewer/2022062502/5681675d550346895ddc2d7c/html5/thumbnails/4.jpg)
![Page 5: Seeing in colour](https://reader035.vdocuments.us/reader035/viewer/2022062502/5681675d550346895ddc2d7c/html5/thumbnails/5.jpg)
Colours
• Look at the next slide and make sure you know the usual names of these six colours.
![Page 6: Seeing in colour](https://reader035.vdocuments.us/reader035/viewer/2022062502/5681675d550346895ddc2d7c/html5/thumbnails/6.jpg)
red
cyan
magenta
blue
green
yellow
![Page 7: Seeing in colour](https://reader035.vdocuments.us/reader035/viewer/2022062502/5681675d550346895ddc2d7c/html5/thumbnails/7.jpg)
Colours
• Look at the next slide for a minute – staring directly at the cross in the middle.
• Describe what you see when you look at the following slide.
![Page 8: Seeing in colour](https://reader035.vdocuments.us/reader035/viewer/2022062502/5681675d550346895ddc2d7c/html5/thumbnails/8.jpg)
![Page 9: Seeing in colour](https://reader035.vdocuments.us/reader035/viewer/2022062502/5681675d550346895ddc2d7c/html5/thumbnails/9.jpg)
![Page 10: Seeing in colour](https://reader035.vdocuments.us/reader035/viewer/2022062502/5681675d550346895ddc2d7c/html5/thumbnails/10.jpg)
![Page 11: Seeing in colour](https://reader035.vdocuments.us/reader035/viewer/2022062502/5681675d550346895ddc2d7c/html5/thumbnails/11.jpg)
After-images and complementary colours
• Look at each of the following shapes for about 30 seconds.
• Describe the colour of the after-image you see.
• Compare what you see with what other people in the class see.
• Is there a pattern in the results? Note that some people may see things differently, or describe them differently.
![Page 12: Seeing in colour](https://reader035.vdocuments.us/reader035/viewer/2022062502/5681675d550346895ddc2d7c/html5/thumbnails/12.jpg)
A red shape…
![Page 13: Seeing in colour](https://reader035.vdocuments.us/reader035/viewer/2022062502/5681675d550346895ddc2d7c/html5/thumbnails/13.jpg)
… gives an after-image that is…
![Page 14: Seeing in colour](https://reader035.vdocuments.us/reader035/viewer/2022062502/5681675d550346895ddc2d7c/html5/thumbnails/14.jpg)
A blue shape…
![Page 15: Seeing in colour](https://reader035.vdocuments.us/reader035/viewer/2022062502/5681675d550346895ddc2d7c/html5/thumbnails/15.jpg)
…gives an after-image that is…
![Page 16: Seeing in colour](https://reader035.vdocuments.us/reader035/viewer/2022062502/5681675d550346895ddc2d7c/html5/thumbnails/16.jpg)
A green shape …
![Page 17: Seeing in colour](https://reader035.vdocuments.us/reader035/viewer/2022062502/5681675d550346895ddc2d7c/html5/thumbnails/17.jpg)
… gives an after-image that is…
![Page 18: Seeing in colour](https://reader035.vdocuments.us/reader035/viewer/2022062502/5681675d550346895ddc2d7c/html5/thumbnails/18.jpg)
A magenta shape…
![Page 19: Seeing in colour](https://reader035.vdocuments.us/reader035/viewer/2022062502/5681675d550346895ddc2d7c/html5/thumbnails/19.jpg)
…gives an after-image that is…
![Page 20: Seeing in colour](https://reader035.vdocuments.us/reader035/viewer/2022062502/5681675d550346895ddc2d7c/html5/thumbnails/20.jpg)
A yellow shape…
![Page 21: Seeing in colour](https://reader035.vdocuments.us/reader035/viewer/2022062502/5681675d550346895ddc2d7c/html5/thumbnails/21.jpg)
…gives an after-image that is…
![Page 22: Seeing in colour](https://reader035.vdocuments.us/reader035/viewer/2022062502/5681675d550346895ddc2d7c/html5/thumbnails/22.jpg)
A cyan shape…
![Page 23: Seeing in colour](https://reader035.vdocuments.us/reader035/viewer/2022062502/5681675d550346895ddc2d7c/html5/thumbnails/23.jpg)
…gives an after-image that is…
![Page 24: Seeing in colour](https://reader035.vdocuments.us/reader035/viewer/2022062502/5681675d550346895ddc2d7c/html5/thumbnails/24.jpg)