They both continued to Trinity College, Cambridge, where Nicholson passed the Mathematical Tripos in 1904 as Twelfth Wrangler.

[7] Nicholson began his academic career as a lecturer at the Cavendish Laboratory in Cambridge and later at Queen’s University Belfast.

His students at King’s College recalled that, despite sometimes arriving late, his lectures were highly valued for their depth and insight.

[1] Ira Sprague Bowen was able to attribute the spectroscopical lines of nebulium to doubly ionized oxygen making the new elements obsolete for their explanation.

[9] Some authors have pointed out the remarkable success that Nicholson's work initially experienced in spite of being founded on concepts that were eventually shown to be incorrect.