The physics interest in this which tends to get quoted is related to possible variation of the fine structure constant. I was trying to remember what I think w

The physics interest in this which tends to get quoted is related to possible variation of the fine structure constant. I was trying to remember what I think was the original paper in that vein, placing limits on strong, electromagnetic, and weak coupling constants, which I think should be referenced, by Max Irvine: https://royalsocietypublishing.org/doi/10.1098/rsta.1983.0084#pane-pcw-figures https://royalsocietypublishing.org/doi/10.1098/rsta.1983.008... (article paywalled)