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#219829251
The concept of the human brain. The right creative hemisphere versus the left logical hemisphere....
#213524698
Archimedean spiral on white background. Three turnings of one arm of an arithmetic spiral, rotating...
#214624906
The universe within. Silhouette of a man inside the universe, physical and mathematical formulas.....
#203446675
Clock face. Measuring circle scale. Measuring round scale, Level indicator, measurement...
#200118693
Blackboard inscribed with scientific formulas and calculations in physics and mathematics.
#117064607
Hermann grid and scintillating grid illusion. In the left figure grey blobs perceived at the...
#128229731
Pi Day, March 14, to celebrate the mathematical constant pi and to eat lots of fresh baked sweet...
#219828762
The concept of the human brain. The right creative hemisphere versus the left logical hemisphere....
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