I pulled out my notebook. I wasn't writing a poem; I was thinking of the Golden Ratio ($\phi \approx 1.618$). Nature’s favorite number.

Puzzles, games, optical illusions, and the psychology of lottery players.

, a collection of photographic portraits and essays about modern mathematicians. Originally published as Kalejdoskop Matematyczny

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It answers the question, "What does a mathematician do all day?" by showing the math in everyday life. Key Themes & Chapters:

If you are looking for a complete overview of the classic book by Hugo Steinhaus, or if you need to know how to use "snapshot" features in a PDF reader , 1. The Book: " Mathematical Snapshots " (by Hugo Steinhaus)