Saturday, 27 November 2021

Flame Tests

 Flame Tests are one of my favourite topics. Explaining the colours of fireworks to year 8 in an online lesson.

Crimson Lithium
Lilac Potassium
Yellow Sodium
Red Strontium
Apple Green Barium
Green Boron
Blue Green Copper






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Complex Cubic Root

Having some fun with math—solving a cubic equation with one real root and a pair of complex conjugate roots. Exploring the fascinating inter...