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Month: August 2022

What is UN38?

What is UN38? UN38. 3 is the prevailing United Nations standard that lithium batteries must meet to receive certification for safe transport. Lithium batteries must undergo a rigorous series of tests performed by an approved independent testing laboratory to ensure Read more…

Can you tile a pentagon?

Can you tile a pentagon? The regular pentagon cannot tile the plane. (A regular pentagon has equal side lengths and equal angles between sides, like, say, a cross section of okra, or, erm, the Pentagon). But some non-regular pentagons can. Read more…