Why does the work of Andreas Vesalius represent a milestone in medicine?

Andreas Vesalius was the founder of modern anatomy. This 16th century physician and surgeon completely revolutionised the science of biology and medicine.

By careful and painstaking dissections of cadavers, he learned a great deal about the structure of the human body and laid the foundation for modern physiology.

In 1543, he published a remarkable book 'De humani corporis fabrica'. It was a fully illustrated anatomy of the human body, based on the observations Vesalius had made during his dissections. The book destroyed the misconceptions in anatomy that had persisted for over a thousand years.

Vesalius' anatomical studies corrected many religious beliefs and the finding of a previous physician Galen, who had dissected apes because religion forbade him to dissect real human cadavers.

Vesalius was the first surgeon to actually cut open a cadaver or dead body of a human being, and his exceptionally detailed muscle drawings changed medical history for all time.

Why is Nicolas Copernicus considered to be a key figure in the field of astronomy ?

Nicholas Copernicus was 15 century astronomer and mathematician, translator artist and physicist among other things He is best known as the first astronomer to put forward the idea of a system in which the planets and planetary objects orbit the Sun. By 1508, Copernicus had begun to create his model of the planetary system, suggesting that the Sun, and not our Earth, was the centre of the Universe. His model of the Universe was accepted, whereas earlier models had not been, because his was more detailed and accurate. He also had a better formula for the calculation of the positions of the planets at different times of the year. The Roman Catholic Church criticised Copernicus' theories. It went so far as to ban his book 'De Revolutionibus Orbium Coelestium,' after he died, and it remained a forbidden book for almost three hundred years. The ideas of Copernicus were instrumental in the evolution of the field of astronomy. In fact, almost every notable astronomer who came afte...

Why is Pythagoras considered one of the greatest scientists of all time?

Pythagoras was an Ancient Greek mathematician and philosopher who lived more than 500 years before Christ. He spent most of his life in the Greek colonies in Sicily and southern Italy. He was also a philosopher, and founder of the religious movement called Pythagoreanism. Pythagoras had a group of disciples who followed him around, and taught other people what he had taught them. He made crucial contributions to modern philosophy, as well as mathematics, science, and religious mysticism. It is also believed that he had a significant influence on medicine, music, astronomy, and divination. Pythagoras is best known for the mathematical theory named after him. He is without doubt, one of the greatest scientists not only of the ancient world, but of all time.

What are the major contributions made by Archimedes?

Archimedes is best remembered as an ancient Greek scientist who made legendary contributions to mathematics, physics, engineering, and astronomy. Archimedes, who lived about 300 years before Christ, is also remembered for his discovery of the relation between the surface and volume of a sphere, and its circumscribing cylinder. He played a major role in developing calculus and analysis. This scientist explained how levers worked, andbuiltwar machines. But, Archimedes is most famous for the Archimedes Principle which explains how to measure the volume of an irregular object. Archimedes discovered his principle quite by accident. He noticed that the water level of the bathtub rose when he got in, and he realised that you could measure volume by putting it on water, and measuring how much the water level rose. Supposedly, the scientist got so excited by this discovery that he ran through the streets naked, yelling Eureka!' which is Greek for 'I figured it out!

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