Does the (stainless steel?) vacuum bottle, used in their demo, not have significant mass? https://www.coopoly.ca/p-545851-bouteille-noire-thermos-510ml-polymtl

Does the (stainless steel?) vacuum bottle, used in their demo, not have significant mass? https://www.coopoly.ca/p-545851-bouteille-noire-thermos-510ml-polymtl-150 https://www.coopoly.ca/p-545851-bouteille-noire-thermos-510m... Note also the extra weight attached by the researchers to its bottom (This is not yet taking into account the data-based scaling formulae presented in the paper)