https://youtu.be/Vfj1GwIBzlY
This anisotropicplus video uses an acetylene torch to heat a composite block of compressed expanded graphite in the direction of compression and also heat it normal to the direction of compression. This is a great visual way to understand thermal anisotropy. If you listen closely during the discussion on intercalation you can hear what we believe was a great horned owl outside the workshop.

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