I think you have a very good point - there's no point taking an ungraspable analogy and replacing it with another one! I'll see what numbers come out of smaller things like a pea.
Thanks for your advice - I really appreciate it!
Leo
Hi guys,
I am giving a schools talk and would like your opinion on whether or not you think the following reasoning is accurate and roughly scientific.
Lets we assume that on average there is only one hydrogen atom per cubic metre on average in the universe. The diameter of a hydrogen atom...