Thanks Pal. The ones I found were comparing metal weights with little interest to my query. I will look elsewhere. Thanks again.
Malawi_glenn has presumably not understood my question since I may be in the wrong section. Apologies. Will re-post elsewhere.
Nuclear Lad
Sorry guys. Must have misled you. I want to read about experiments whereby it is shown that if a fixed mass M5, made up entirely of p-n pairs [nuclei with same number of protons and neutrons] and another mass also of M5 but made up of heavy atoms [nuclei contains more neutrons than protons] will...
Question:
The postulate that mass attracts mass is present in both the classical description of gravity and GR. My question is related to the extra nuetrons in heavy atoms, if there is experimental evidence that these extra neutrons are also part of the equation.
I wish to read about...