On Fri, Jul 2, 2021 at 3:44 PM ROGER ANDERTON <r.j.ander...@btinternet.com> wrote:
> Hi > > Does anyone here have access to a vacuum drop tower; I want to do an > antigravity experiment > Here's a list...maybe if you ask nicely. :) https://en.wikipedia.org/wiki/Drop_tube#List_of_drop_towers
