(共19张PPT)
Great scientists
1
Using language
Reading and writing
Nicolaus Copernicus
Born: in Poland in 1473
Died: on May 24, 1543
Copernicus
What do you know about him
What is he famous for
astronomer
Putting forward the heliocentric theory (日心说)
Nicolaus Copernicus was one of the first scientists to use mathematical observations to collect information. He believed the sun is the center of the universe and the earth and other planets go around it.
Eight Planets In the Solar System
Showing Copernicus’ theory
A diagram showing the solar system with the earth at its centre
A diagram showing the solar system with the sun at its centre
Before Copernicus’ theory
Skimming
Draw the two theories of the universe.
Careful reading
Read the text carefully, then answer these questions.
(1) Why couldn’t he tell about his theory (Para 1)
(2) What was his theory about (Para 1)
(3) What had the astronomers noticed in the sky (Para 2)
(4) When did Copernicus complete his theory (Para 3)
(5) How did he explain changes in the movement of the planets and in the brightness of the stars
When did he publish his idea (Para 4)
(6) Why do people think that there is a direct link between his theory and the work of Isaac Newton, Albert Einstein and Stephen Hawking (Para5)
Because the powerful Christian Church would have punished him for even suggesting such an idea.
(2) What was his theory about (Para 1)
All his mathematical calculations led to the same conclusion: that the earth was not the centre of the solar system. Only if you put the sun there did the movements of the other planets in the sky make sense.
(1) Why couldn’t he tell about his theory (Para 1)
(3) What had the astronomers noticed in the sky (Para 2)
They had noticed that some planets in the sky seemed to stop, move backward and then go forward in a loop. Others appeared brighter at times and less bright at others.
(4) When did Copernicus complete his theory (Para 3)
Between 1510 and 1514 he worked on it, gradually improving his theory until he felt it was complete.
(5) How did he explain changes in the movement of the planets and in the brightness of the stars
When did he publish his idea (Para 4)
He placed a fixed sun at the centre of the solar system with the planets going round it and only the moon still going round the earth. He also suggested that the earth was spinning as it went round it and this explain changes in the movement of the planets and in the brightness of the stars.
He published it as he lay dying in 1543.
(6) Why do people think that there is a direct link between his theory and the work of Isaac Newton, Albert Einstein and Stephen Hawking (Para5)
Because his theory is now the basis on which all our ideas of the universe are built. His theory replaced the Christian idea of gravity which said things fell to earth because God created the earth as the centre of the universe, He showed this was obviously wrong.
If you were Nicolaus Copernicus, would you have hidden your theory for so many years Give your reasons.(EX.2 on P7)
Yes/No
Debate
Agree:
1.He was cautious, not a coward. If he had published his ideas, he would have been killed just as Bruno who was burned to death because his theory was against the Christian Church. He should protect himself first.
2. Every time when a new idea appears, there are always rejections. It's normal. Scientists should have patience to spread their truth.
Disagree:
1. Copernicus was a coward. He should speak out his discovery and let the world know the truth earlier.
2. As a scientist, he should have the courage to publish his findings. No matter how the Christian Church opposed him, time will show that his ideas are right.
Copernicus