Board of Education (1954) that rejected separate white and colored school systems and by implication overturned the "separate but equal" doctrine established in Plessy v.. 
Ó jẹ́ idẹra ní 1911, nípasẹ̀ ìtumọ̀ ti Ernest Rutherford fún ìdánwò Rutherford 1909 ti Hans Geiger àti Ernest Mars ṣe, lábẹ́ ìdarí Rutherford.. 