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Ptolemy's Theory
In the A.D 100's Ptolemy was a astronomer and in that time he stated, that the earth was the center of the universe. People believed this theory for many centuries. -
Jan 1, 1543
Nicolaus Copernicus new theory
In the early 1500"s Nicolaus Copernicus began to question Ptolemy's theory which was that the earth was the center of the universe. But Copernicus abandoned that idea and formed his own theory which was that the "sun centered" theory where the sun was the center instead of the earth. He published this theory in 1543 but people didn't pay attention because he didn't have the right tools to prove this and people denied this new idea when it was first published -
Jan 1, 1543
Andreas Vesalius
he studied anatomy and refused to believe the descriptions of human muscles and tissue previously written by galden. So he did his own studies on the human body and in 1543 he published his 7 volume book that included detailed illustrations and information. -
Jan 1, 1550
William harvey
Around the 1550s he made important contributions he used laboratory experiments to find out more about the circulation of blood and how blood moved to veins and arteries. He also studied the heart and made some important discoveries that helped us to better understand blood circulation. -
Jan 1, 1570
Antoni Van Leeuwenhoek
in the late 1500's, a dutch scientist, antoni van Leeuwenhoek discovered bacteria using the microscope. he studied and wrote about a whole rang of new, tiny life forms that havent been seen by the human eye -
Johannes Kepler
He decided to prove all of Copernicus’ ideas. He believed the ideas and wanted to show everyone. He was a brilliant mathematician and used math to show, models and observation\ Copernicus didn't state everything accurately, but Johannes did prove the heliocentric theory correct, He needed help proving what he found for everyone to understand -
René Descartes
In the 1600s René Descartes came up with this idea that no assumption should not be questioned. He thought that just because someone says it, does not mean that it is true. Which is was good because people used to think that the earth was the center of the universe. so he was saying that you need to prove your thinking or your idea and he was right for thinking that. -
Galileo's special telescope
Galileo made a telescope with more magnifying power then any other ones. He was able to see things that one has ever seen before, it granted him the ability to be the first to see the mountains and valley on the moon, the rings on Saturn and spots on the sun. He was also able to see the moons around Jupiter. -
Francis Bacon
Francis Bacon believed that scientific theories could only be developed through observation and experiments. In 1630 he published a book that outlined his new way of thinking, so people could start thinking his way. -
Otto von Guericke
In 1650 Guericke invented the air pump, which he used to create a partial vacuum. He discovered that light travels through a vacuum but sound does not. -
Robert Boyle
Robert Boyle helped to pioneer the new science of chemistry. In 1662 he showed that temperature and pressure affect the space that a gas occupies. -
Isaac Newton
Galileo and Kepler couldn't explain their observations and ideas, so Isaac Newton helped them by figuring out that the force that holds planets in their orbits and the force that causes objects to fall are the same; gravity. This was something big because he helped people to better understand this concept and explain why -
theory of gravity
Isaac Newton purposed the theory of gravity Newton demonstrated that gravity existed and suggested that gravity was the force responsible for the movement of planets. -
laws of motion
Laws of motion defined the relationship between an object and the forces that make it move. A expression that is often used of this is, that a body in motion remains in motion, and a body at rest remain at rest unless influenced by another force. He developed this idea from his theory of gravity. -
Antoine Lavoisier
Antoine Lavoisier, in the late 1700s, showed people that fire resulted when a substance is rapidly combined with oxygen. He came up with the idea that is known as the law of conservation madder. Its one of the most important principles in the study of chemistry.
