Scientific Discoveries Flashcards
Edmund Haley (of Haley’s comet)
Was a sea captain
Astronomer
Inventor of the diving bell
Invented the weather map
Was the deputy controller at the royal mint
Cartographer
Professor of geometry at Oxford
Recognised comet he saw in 1682 was the same seen by others before.
Edmund Haley (of Haley’s comet)
Was a sea captain
Astronomer
Inventor of the diving bell
Invented the weather map
Was the deputy controller at the royal mint
Cartographer
Professor of geometry at Oxford
Recognised comet he saw in 1682 was the same seen by others before.
Haley had a bet in 1683
Of 40 shillings for anyone who could find a solution as to why planets orbit in an ellipse.
Robert Hooke (man credited with first describing a cell)
Sir Christopher Wren (more of an astronomer than an architect)
Haley met Newton in 1684
Newton knew immediately planets orbited in an ellipse because he had calculated it. Couldn’t find it among his papers.
Went away and wrote the principa over 2 years. Haley paid to have it published. Explained the orbiting of the planets and identified gravity.
Issac Newton
Was an alchemist for over half his life.
Economist John Maynard Keynes bought his papers from Oxford and found mostly preoccupied with alchemy.
Invented calculus but didn’t share his work for 26 years
Did work on spectroscopy chose not to share work for 3 decades
Bit weird, poked a needle in his eye to see what was there. Stared at the sun to see what was there.
Three laws of motion
Objects that move in a straight line until another force acts in it.
Every action has an equal and opposite reaction.
Pull of any two objects is proportional to the mass of each and varies inversely with the square of the distance. F= (GmM/r^2)
According to newtons theory
Centripetal forces would mean earth is an oblate spheroid.
