Were Heike Kamerlingh Onnes and Ronald Reagan alive at the same time?
Yes. Heike Kamerlingh Onnes and Ronald Reagan were alive at the same time for 15 years, from 1911 to 1926.
Heike Kamerlingh Onnes was 57 when Ronald Reagan was born.
Ronald Reagan was 15 when Heike Kamerlingh Onnes died, aged 72.
Heike Kamerlingh Onnes
Dutch physicist, Nobel prize winner
Born 21 September 1853 · died 21 February 1926, aged 72
Ronald Reagan
President of the United States from 1981 to 1989 and actor
Born 6 February 1911 · died 5 June 2004, aged 93