first 25 years of the 18th century
Newton, Leibniz, Bernoulli, Fahrenheit, Euler
first 25 years of the 19th century
Gauss, Faraday, Fourier, Schopenhauer, Hegel
first 25 years of the 20th century
Bohr, Einstein, Planck, Schrodinger, Neumann, Wittgenstein, Heidegger, de Broglie
first 25 years of the 21th century