Video Friday: Ink

Organiker finally got it in the comments, and a couple of other folks guessed correctly on twitter. What Am I? this week was in fact paper (the top two chemicals, calcium sulfate and cellulose – the calcium sulfate is used to finish the paper) and ink (a calligraphy ink, composition taken from: José-Yacamán et al. ‘The Chemical Composition of Fountain Pen Ink’

As people are quite unfamiliar with the process of making ink, here’s a longish video on how to make ink using some of the chemicals that appeared in What Am I?

PS – drowning in marking and pre-semester prep at the moment, more substantial content next week!

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