9
6.
One of the greatest scientists of the 20th century is
the author of numerous inventions and theories that
transformed a lot of concepts
linked to space and
time, with the most important discovery being the
theory of relativity. Other discoveries include the
photoelectric effect and the calculator.
Rudolf Christian
Karl Diesel
(1858 – last seen
alive 1913)
Leonardo Da
Vinci
(1452 – 1519)
7.
Being a mechanical engineer,
this scientist man-
aged to discover the diesel engine. The German inven-
tor was also a well-known thermal engineer,
a poly-
glot, an expert in arts, and a social theorist.
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