From Logic to Learning 3 - Image Index | Yenra
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Man writing on a chalkboard
Mathematician at Work: A black-and-white photograph of a man writing on a chalkboard with white chalk. The man has dark hair and wears a sweater over what appears to be a collared shirt. He is holding a piece of white chalk in his right hand, which he uses to write on the chalkboard as if he is working out an equation or solving a problem. He also holds a piece of chalk in his left hand as if about to erase part of something already written there. The background is dark, and light shines down from above onto both the man's hands and the chalkboard.

Color Index

8 top colors in order of strength
SwatchColor Name (hex #)
All Black (#181818)
Gravity (#3D4040)
Half Baltic Sea (#565657)
Windswept (#434141)
Triple Surrender (#999C9D)
Eighth Stack (#C0C1BF)
Gainsboro (#DCDCDC)
Trolley Grey (#808080)