Linked from
The 27 pages that link to J. J. Thomson, each with the reason it gives.
Elementary chargeRelated: Identifying the electron made its charge a central target of measurement.
AtomRelated: His discovery showed that atoms contain smaller charged components.
Wilhelm RöntgenRelated: His later work helped clarify the nature of the rays Röntgen had studied.
Owen RichardsonRelated: Thomson supervised Richardson’s doctoral research at Cambridge.