Saturday 19th July 2025
Difficulty: Medium
Post-it notes (Quiz #974)
Arthur Fry with a Post-it note on his forehead. Photo: Signe Dons @ Wikipedia (Public domain)
1. The glue for Post-its was famously discovered by accident, by 3M scientist Spencer Silver. What did Arthur Fry, one of Silver's colleagues, realise it could be used for?
2. What size was the original Post-it note?
3. Post-it notes are made in many colours, which are organised into "collections". Which of these is NOT a current Post-it Color [sic] Collection?
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