I’ve known for a long time that black and white are not ‘colours’. But I didn’t know that purple is also not a colour…

Posted in Interesting stuff

In physics we define ‘colour’ by its wavelength. But there are colours which do not have a wavelength – black and white are the obvious ones. Black is when there is no light at all, and white is when all the colours in the spectrum ‘combine’ together into one beam of light.

But, I recently discovered that there are other ‘colours’ which also do not have wavelengths. And it’s nothing to do with physics and all to do with biology and photo(n)receptors in our eyes.

In this video, Steve Mould discusses how this occurs.

https://www.facebook.com/reel/985759159102984

Isn’t that interesting? Our brains ‘create’ new colours depending on the ratio of photoreceptors firing in our eyes. Who’da thunk?!

Bye for now,

Mike.

PS There are only a few places left for our next MasterClass in Luton next month. Get in there quick to secure your place. Email us at lisa.dermalase@gmail.com.

Published by mikejmurphy

I started in medical lasers in 1986! I have been involved in clinical research, medical laser and IPL development, sales and marketing across Europe and South East Asia, business start-ups, theoretical research into laser-tissue interactions, training course development, writing articles for peer-reviewed journals and industry magazines plus I play bass guitar in a rock 'n' roll band too!!

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