I chose the way the human eye perceives colour as my enduring learning piece due to the fact that our would be nothing to us without our ability to perceive colour light rays. We perceive colour in white light by combining wavelengths of green, blue, and red. Those three colours can be combined through wavelengths to allow the human eye to perceive the many different colours we see every day. When we look at an apple, red is not in the apple, but those three colours hit it and the apple reflects the wavelengths perceived as red and absorb the wavelengths perceived as blue and green. If our eyes were unable to detect wavelengths and our brains could not determine the colour we perceive then our world would be a totally different place.
Roses are red, violets are blue,
But how do our brains determine these hues.
Three main colours are to be seen,
Red, and blue, and green,
These colours we see, are they true?
Wavelengths of light are sent through,
To the back of the eyes where the retina remains,
But the colour detection happens in our brains,
We look at an apple, and we think all we see is red,
But the truth lies inside our head,
The apple absorbs green and blue,
To leave the wavelength of a red hue,
This is what our brains see,
The colour we have learned to be
This works for all the other colours we see as well,
Now isn’t colour perception just swell!
How the human eye and brain sees, processes color and light.
Roses are red and violets are blue, but we only know that thanks to specialized cells in our eyes called cones. When light hits an object – say, a banana – the object absorbs some of the light and reflects the rest of it.
I chose these two websites to help explain my enduring learning point of colour perception. The first website provides three very simple but meaningful diagrams of how wavelengths create colour. The second goes into great detail much further than what I have explained, it goes into the cones and even into what insects can see. It provides the scale of colours humans are able to see through wavelengths. Both of these websites provide good descriptions along with diagrams that can provide a better visual understanding of how the human eye perceives colour.
Chapter 6 of The Everyday Physics of Hearing and Vision: Vision and the perception of light and colour
The chapter of this book is a great source of more in depth information on vision, light, and colour. This book goes through all different kinds of light and how they affect the way we see colour. it provides base knowledge of vision along with the descriptive explanations as to how we see colour. Instead of only the simple way everyone should see colours the same it goes into psychology in perception of colour and how different peoples colour perception can differ because of psychology. This book has important and useful information to understand colour perception and the eyes.