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Large-number notation: standard form and scientific notation

https://ace-wiki.win/index.php/Large-number_notation:_standard_form_and_scientific_notation

Large-number notation describes how to write very large numbers compactly. Standard form writes a number as a decimal times a power of ten, like 1.23 × 10^6. Scientific notation is similar but with a coefficient between 1 and 10 under ten's exponent. These systems help scientists, engineers, and students work with huge quantities without excessive digits.

Felt Versus EPDM Comment

https://linktr.ee/kh472238mjlrd

Clear comparison of felt, EPDM and GRP. Explains why felt can crack in temperature extremes. Straightforward guidance without the usual sales talk. Applies just as much in Grangetown and Splott