Minus Green

Sydney - Inverted PinkAs most of you probably know, colours correspond to different wavelengths in the electromagnetic spectrum. But what wavelength represents the colour pink? Click through to learn more :)



I came across this video the other day. It was by Minute Physics and titled “There is no pink light”. I reccomend you take a minute and watch it, you will need literally just one minute!

“There is simply no pink light.”

“Pink should probably be called minus green, because pink is just the left overs of white light, when you take out the green.”

The video explains how, whereas other colours like red, green, or blue, for example, correspond to certain wavelenthgs in the electromagnetic spectrum (see image below), pink is not part of this spectrum!! Isn’t that amazing?! I had never thought about that.

Electromagnetic Spectrum
Electromagnetic Spectrum

This got me thinking about the colour pink and where I see it. I noticed when editing photos in Lightroom that the “Tint” white balance slider goes from green to pink (or minus green hehe). What a coincidende?! Probably not. Notice the “Temp” white balance slider? ¬†It’s also related to physics. If I am not mistaken it is refering to black body radiation, I will look into it and perhaps write a post about it in the future.

Lightroom White Balance Sliders
Lightroom White Balance Sliders

And then I thought, I’m going to test out this “minus green” thingy. I’ll find a photograph of mine with pink in it, open it in Photoshop and invert the colours. Voila!! These giant pink snails turned green!

Giank Pink Snails in Sydney
Giank Pink Snails in Sydney
Giank Green Snails in Sydney - Inverted Pink
Giank Green Snails in Sydney – Inverted Pink

At this point I start grinning at the computer because a lightbult has just turned on in my head and I have a silly crazy idea. I’ll make a gif, I bet it’s very hypnotising!! And so I did. Check it out below, but don’t get dizzy hehe.


I love when everything ties in together, electromagnetism explains the green machine and photography uses it in white balance adjustments :)

Thank you for reading!

xx Ana :)


2 thoughts on “Minus Green

  1. Very interesting Ana. I was working on some faulty surveillance cameras today that were displaying the green grass and hedges as pink! So I can now see from your post that they had somehow turned on a minus green setting.
    Thanks for the education :)


    • Thank you for reading Edward :) I’m glad you enjoyed it! If the cameras were displaying all the colours weird they were probably inverting them! Science! Hehe


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