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276 BCE
Eratosthenes born
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240 BCE
Eratosthenes measured the Earth
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230 BCE
Eratosthenes was inspired by astronomy
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194 BCE
Eratosthenes died
He commited suicide by starving himself -
Feb 15, 1564
Galileo Born
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Construction
Galileo made a mechanical device for mathematical calculations -
Johannes Kepler
Galileo was inspired by his book and work. -
Jupiter
Galileo discovered the 4 moons orbiting around Jupiter, proving the Heliocentric theory. -
Telescope
Galileo made a telescope 3 times as powerful as the Dutch device -
Galileo Died
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Charles Darwin Born
He was born in the UK -
Darwin sent to college
His father sent him to college to become a doctor -
Darwin’s Book
He publichsed a book explaining natural selection and evolution -
Born
Marie Curie was born as Maria Sklodowska -
Alred Wegener was born
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Darwin passed
He passed at the age of 73 -
Marriage
Marie married Pierre, he influenced her -
Dicovered polonium
Marie saw that Polonium was 400 times as radioactive than any other element -
Radium disovered
Marie saw that Radium was 900 times more radioactive than polonium -
Harry Hess was born
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Wegener proposed the idea of continental drift
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Portable X-rays
Marie invented the first portable x-ray machine for soldiers at war. -
Francis Crick Born
He was born in the UK -
Rosalind Franklin was born
She was born in the UK -
James Watson born
He was born in Chicago & is still alive -
Alfred Wegener died
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Death
Marie died of leukemia -
Harry Hess “discovered” plate tectonics
He found more information on the plate tectonics -
Rosalind’s best picture taken
The clearest picture she captured of DNA (photograph 51) was taken -
Watsons & Crick discover DNA structure
Using Franklin’s picture they put together the structure of DNA -
Rosalind Franklin passed
She died in the UK -
Harry Hess died
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Francis Crick passed away
He died in San Diego, CA