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Who invented frozen food?
Science and technology
Albert
Einstein
(1879–1955)
German-born
physicist Albert
Einstein’s famous
equation E=mc
2
explained how
energy, mass,
and time are all related. It
helped scientists understand
how the Universe works.
Thomas Edison (1847–1931)
Thomas Alva Edison
produced more than 1,000
inventions, including long-
lasting light bulbs, batteries,
and movie projectors.
1800
1850
Einstein’s
equation
Movie projectors
developed quickly after
Edison’s early work.
Early movie
projector
Karl Landsteiner
(1868–1943)
Austrian-born physiologist
Landsteiner discovered
that human blood can be
divided into four main
groups – A, B, AB, and O.
This laid the foundation of
modern blood groupings.
Albert Szent-Györgyi
(1893–1986)
The Hungarian scientist
Albert Szent-Györgyi is best
known for detecting vitamin
C. He also pioneered research
into how muscles move and
work. He won the Noble
Prize for physiology and
medicine in 1937.
Orange juice is a
good source of
vitamin C.
Blood transfusions play
an important part in
modern medicine.
Charles Richter (1900–1985)
Richter developed a way
to measure the power of
earthquakes. He worked
on his scale with
fellow physicist
Beno Gutenberg.
Earthquakes
destroy homes
and office
buildings.
A “great”
earthquake (8–9.9
on the Richter scale)
strikes on average
once a year.
You inherit your
blood type from
your parents.
Red blood cells
Epicentre
