Roberto Pavani's latest activity

A simple controlled procedure to remove thermal contraction as a confounding factor: 1. Fill the bottle completely to the brim with...

Probably Gallium can do it: https://dlab.epfl.ch/wikispeedia/wpcd/wp/g/Gallium.htm

I usually freeze 1.5L plastic bottle, I fill it with water from the sink and put in the freezer and always found expansion. Have you...

My naive method was based on reversing the problem: instead of 'how much does the ocean rise when we add balls?', I asked 'how much does...

Read post #15 carefully. The argument goes like this: With a ball floating inside its hexagonal prism, there are three regions of...

It is not an approximation. Archimedes' Principle is exact and depends only on the volume, not details of the shape.

Even if a deeper explanation existed, it would itself rest on postulates, merely shifting the question one level down. BTW SR is a...

is wrong, probably you meant: ##(a b)^m = a^m b^m##

I surely miss something, but it seems to me that the answer should be no, at least for a non-trivial ##K##. For a universe that is not...

Centrifugal force is already compensated at first order by the nadir not pointing to the Earth's centre. The residual second-order term...

IMHO, ##a^0 = 1## is settled at post #8. If that's not satisfactory, then one must have in mind ##a, x \notin \mathbb{R}##, or an...

Previous answer was more to the point for a realistic earth, with the error given here of correct magnitude. This answer here though is...

Apologies - I misread your method. It’s fine, and it is the same as in post #1.

Probably I'm wrong but my naive idea is to fill the "hole" generated by the submerged part of the ball with water, the amount of water...

Please define a and x