Mohs Hardness Scale

The Mohs scale of mineral hardness characterizes the scratch resistance of various minerals through the ability of a harder material to scratch a softer material. It was created in 1812 by the German geologist and mineralogist Friedrich Mohs and is one of several definitions of hardness in materials science. The method of comparing hardness by seeing which minerals can scratch others, however, is of great antiquity, having been mentioned by Theophrastus in his treatise On Stones, c. 300 BC, followed by Pliny the Elder in his Naturalis Historia, c. 77 AD.
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    … In this instalment of our visual maths series, I wanted to look at real world accuracy in storytelling. As marketers, so much of what we do is in some way designed to tell compelling stories, and balancing the need to engage emotionally with the requirements of showing something that’s true to life. So I thought we’d take a look at how Hollywood…

    Pete Wailes/ SEOgadget- 9 readers -
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