All History articles – Page 46
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Opinion
Hirsch's funnel
Separating crystals is a cinch using a Hirsch funnel, but it was not always thus
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Opinion
'Perkin's' triangle
The vacuum distillation apparatus invented by Leonard Temple Thorne, but with Perkin's name on it
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Podcast
Promethium
Enter the world of Greek mythology to reveal the great powers of the element promethium