References 385% CONFIDENCEOverall confidence: 85%How well the pin's source and references back up its dates.Weighted average of how firmly 3 references, the source included, support the pin's start and end times; a reference counts half as much for every 180 days older than the newestShow all pins at 75% confidence or better
The first entry is always the pin's source. Overall confidence is a weighted average of how firmly each reference supports the start and end times used above; a reference counts half as much for every 180 days older than the newest.
- [1]90%en.wikipedia.org/wiki/Eddington_experimenten.wikipedia.org· Posted Sep 22, 2026· Starts Nov 6, 1919 ✓· 33% of score
Wikipedia's[2][3] Eddington experiment article dates the session: "The presentation of the results at the joint 6 November 1919 session of Royal Society and Royal Astronomical Society led to intensive press coverage first in Great Britain and a few days later in the US press". The eclipse itself was on 29 May 1919; this pin is the announcement, which is what made Einstein famous.
- [2]80%General relativityen.wikipedia.org· Added Sep 22, 2026· 33% of score
The theory the expeditions tested, for what a deflection of starlight near the Sun means and why the measurement settled the question.[1]
- [3]85%Arthur Eddingtonen.wikipedia.org· Added Sep 22, 2026· 33% of score
The astronomer who led the Principe expedition and presented the results at Burlington House, for who he was and what he did with the plates; the RAS homepage, cited here before, states nothing about 1919 and was dropped.[1]
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