Mastodawn

“The #21 Bricks” by Thomas Typewriter

"The #21 Bricks" by Thomas Typewriter (digital, 24"w x 36"h, vector illustration) If you like this, or any of my other art, please consider throwing some support my way through my Patreon (https://www.patreon.com/c/ThomasTypewriterTypes) or Ko-fi (https://ko-fi.com/thomastypewriter).

https://thomastypewriter.art/2026/06/10/the-21-bricks-by-thomas-typewriter/

Thomas Typewriter 2d ago

The #20 Bricks” by Thomas Typewriter – a new illustration

"The #20 Bricks" by Thomas Typewriter (digital, 24"w x 36"h, vector illustration) If you like this, or any of my other art, please consider throwing some support my way through my Patreon (https://www.patreon.com/c/ThomasTypewriterTypes) or Ko-fi (https://ko-fi.com/thomastypewriter).

https://thomastypewriter.art/2026/06/08/the-20-bricks-by-thomas-typewriter-a-new-illustration/

In the Dark 2d ago

Nine Purple Dots

I posted this little optical illusion yesterday on BlueSky and it proved so popular I thought I’d repeat it here.Whichever of the purple dots you look directly at turns more purple:

I find the effect is stronger on a smaller screen (e.g. on a phone).

In a nutshell, this happens because your eyes have reduced sensitivity to blue light at the centre of your field of view so the purple (which is a mixture of red and blue) changes hue if you look directly at it. For more details see here and the following blog post:

https://www.schulz-hildebrandt.com/9-purple-dots-illusion/

I’m interested to know whether or not this works for people who are colour blind, so if that is you please let me know!

#arXiv250911582 #colourPerception #opticalIllusion #optics