Galileo Galilei





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Galileo Galilei

The latest articles related to Galileo Galilei

Islamic cosmology – Cosmology in the medieval Islamic world

Cosmology

Cosmology was studied extensively in the Muslim world during what is known as the Islamic Golden Age from the 7th to 15th centuries. There are exactly seven verses in the Quran that specify that there are seven heavens. One verse says that each heaven or sky has its own order, possibly meaning laws of nature. [...]

Astrophysics – History

Although astronomy is as ancient as recorded history itself, it was long separated from the study of physics. In the Aristotelian worldview, the celestial world tended towards perfection—bodies in the sky seemed to be perfect spheres moving in perfectly circular orbits—while the earthly world seemed destined to imperfection; these two realms were not seen as [...]

Mechanics – History

Antiquity The main theory of mechanics in antiquity was Aristotelian mechanics. A later developer in this tradition was Hipparchus. Medieval age In the Middle Ages, Aristotle’s theories were criticized and modified by a number of figures, beginning with John Philoponus in the 6th century, and reaching its peak during the Golden Age of Islam. A [...]

Astronomy – History

In early times, astronomy only comprised the observation and predictions of the motions of objects visible to the naked eye. In some locations, such as Stonehenge, early cultures assembled massive artifacts that likely had some astronomical purpose. In addition to their ceremonial uses, these observatories could be employed to determine the seasons, an important factor [...]

Gravitational wave – Astrophysics and gravitational waves

During the past century, astronomy has been revolutionized by the use of new methods for observing the universe. Astronomical observations were originally made using visible light. Galileo Galilei pioneered the use of telescopes to enhance these observations. However, visible light is only a small portion of the electromagnetic spectrum, and not all objects in the [...]

Cosmology – Physical cosmology

Physical cosmology is the branch of physics and astrophysics that deals with the study of the physical origins and evolution of the Universe. It also includes the study of the nature of the Universe on its very largest scales. In its earliest form it was what is now known as celestial mechanics, the study of [...]

Natural science – Branches of natural science

Astronomy This discipline is the science of celestial objects and phenomena that originate outside the Earth’s atmosphere. It is concerned with the evolution, physics, chemistry, meteorology, and motion of celestial objects, as well as the formation and development of the universe. Astronomy includes the examination, study and modeling of stars, planets, comets, galaxies and the [...]

Celestial mechanics – History of celestial mechanics

Modern analytic celestial mechanics started over 300 years ago with Isaac Newton’s Principia of 1687. The name “celestial mechanics” is more recent than that. Newton wrote that the field should be called “rational mechanics.” The term “dynamics” came in a little later with Gottfried Leibniz, and over a century after Newton, Pierre-Simon Laplace introduced the [...]

Observational astronomy – Telescopes

Galileo Galilei was the first person known to have turned a telescope to the heavens and to record what he saw. Since that time, observational astronomy has made steady advances with each improvement in telescope technology. A traditional division of observational astronomy is given by the region of the electromagnetic spectrum observed: * Optical astronomy [...]

Galileo Galilei – “Father of Modern Observational Astronomy”

Galileo Galilei (1564 – 1642) Galilao has been called the “father of modern observational astronomy.” He made improvements on the telescope that was invented by Hans Lippershey. He used the telescope to make observations of sunspots, lunar mountains and valleys, the four largest satellites of Jupiter and the phases of Venus.

Fundamental Forces and Gravity on Earth and in the Heavens

Galileo galilei gravity

Gravity is the force of attraction between any two objects in the universe but the connection between gravitational forces on Earth and in the heavens is a very complex one. Physicists now believe that all forces in the universe can be reduced to one of four fundamental forces: gravitation, electromagnetism, and the strong and weak force.

An Ocean of Air

Galileo galilei gravity

Nearly four hundred years ago, in a patchwork of individual fiefdoms that we now call Italy, a revolution of ideas was struggling to take place. The traditional way to understand the workings of the world — through a combination of divine revelation and abstract reasoning — had begun to come under attack from a new breed.









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