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Major Galileo Discoveries And Invention

by Javed Pasha
Galileo Discoveries And Invention

Galileo Discoveries And Invention

On January 7, 1610 Galileo Galilei demonstrated his first telescope before the Venetian lawmakers—he pointed out the Medicean stars to them.

For most of us, this would be one of the most memorable days of our lives, but for one of the greatest thinkers of all time it was just a single day among many other such days.

In this blog post we will discuss Galileo Discoveries And Invention.

Galileo Discoveries And Invention


Galileo Discoveries In Properties Of Pendulums

The Galileo discoveries in properties of pendulums were made by the Italian astronomer and physicist Galileo Galilei. He first discovered that the period of a pendulum, the time taken to swing backwards and forwards once, is independent of its amplitude – the angle at which it is released.

This discovery is called “the law of periods”. Later, he discovered other important properties of pendulums, including that their period depends only on their length, and therefore with a suitable arrangement of pendulums, it can be used to measure time accurately.

His discoveries in this area were published in his book, Discorsi e Dimostrazioni Matematiche Intorno a Due Nuove Scienze. In the book he explains how he gauged the acceleration due to gravity by timing pendulums.


Galileo Discovery Of The Phases Of Venus

When Galileo Galilei first discovered the phases of Venus in 1610, he knew he had something special on his hands. The phases of Venus are beautifully captured in the image above.

This image was taken by NASA’s solar dynamics observatory with an instrument that can see the light from Venus when it is reflected off of the Sun. In the image, you can see how Venus goes from a crescent phase to a full phase over time.

Galileo made this discovery by using one of the first telescopes ever invented. He was able to see that Venus would go through different phases like our Moon does every month.

He then realized that this meant that Venus must be orbiting around the Sun, and not around Earth like everyone had thought for thousands of years! This discovery helped scientists figure out that Earth is not at the center of our Solar System, but instead is just another planet orbiting around the Sun with all the other planets.


Galileo Discovery Of Moons Of Jupiter

 I think the most significant discovery made by Galileo was his discovery of moons of Jupiter. He discovered the four main moons, Io, Europa, Ganymede, Callisto in 1610. The discovery helped him to prove that the planets orbit the sun rather than Earth.

The four largest moons of Jupiter were known as “Galilean satellites.” These satellites are named after Galileo and it is believed that he discovered them with his telescope in 1610.

 Discovering the moons of Jupiter was a great achievement for Galileo. He used his telescope to observe Jupiter and saw that it had four small stars orbiting around it. At first he thought they might be planets, but then decided they were satellites (moons).

He discovered three moons, which he named after the Medici family: Io, Europa and Ganymede. He also discovered a fourth satellite but called it “Sidera Medicea”, meaning ‘Medicean stars’. Later astronomers renamed this Callisto (the faithful) after another Greek mythological character.

Galileo’s observation of Jupiter’s moons led him to believe that there could be other planets with orbiting bodies around them too.

However, at this time people believed in geocentrism (the belief that everything revolves around Earth), so they thought the moons must orbit Earth rather than Jupiter itself.


Galileo Invention Of Hydro static Balance

It is not clear exactly when Galileo Galilei invented the hydro static balance, although the first reference to it was in a letter that he wrote to his student Benedetto Castelli on July 28, 1638.

The letter was in response to a question posed by Castelli regarding the true nature of floating bodies and their tendency to sink. Galileo addressed this question by describing the invention of a tool that could measure the specific gravity of objects. He called this tool the hydrostatic balance.

The fact that Galileo had not previously mentioned this instrument suggests that he may have just invented it at that moment, or perhaps even just before writing the letter. In any case, it is significant that there is no record of anyone having ever made such an instrument before.

The hydro static balance is a device used to find the density of a material by measuring the weight of samples suspended in water.


Galileo Invention Of Forerunner To The Modern Thermometer

 Galileo’s thermometer is a forerunner to the modern thermometer. It was invented by Galileo Galilei in 1632.

Galileo’s thermometer consists of a glass bulb containing alcohol with a small amount of water. The alcohol-water mixture has an equilibrium temperature of about 76° F (24° C).

The bulb is partially filled with air which exerts pressure on the liquid inside. As the temperature increases, so does the pressure on the liquid.

As an example, if you heat up your thermos with hot coffee, its contents will boil faster than at normal room temperature because the pressure is greater due to the increased temperature.


Galileo Invention Of Improved Military Compass

Galileo’s invention of the improved military compass led to significant improvement in the accuracy and usability of maps. Prior to Galileo’s invention, the only way to make a reliable map was to take meticulous notes while travelling, which was difficult and error-prone.

The magnetic compass made it possible for someone to navigate without taking notes, with much higher accuracy.


Galileo Theory Of Basic Principle Of Relativity

Galileo was one of the first scientists to propose that all objects fall at the same speed, no matter what their mass or composition. This is Galileo’s principle of relativity.

He also discovered the law of free fall and stated that if an object is dropped in a vacuum, it will fall with a constant acceleration, which we now call g (gravitational acceleration).


Galileo Father Of Observational Astronomy

Galileo Galilei made many important discoveries in the 16th and 17th centuries. He was one of the first people to use a telescope to look at the stars and planets. He discovered the center of the universe is not earth.

 In 1609, he built his own telescope (a device for making distant objects appear closer) and used it to study the heavens. He saw mountains on the Moon, moons orbiting Jupiter and spots on the Sun.

These discoveries challenged ideas about how Earth’s place in space is special or central to God’s creation.

In 1610, Galileo published an account of his observations as Sidereus Nuncius (Starry Messenger). The book caused a sensation because it included drawings of what he had seen through his telescope.

By this time he had become professor of mathematics at Padua University in northern Italy (although he was still based in Florence).


Galileo Book Assayer

Galileo’s book Assayer is considered to be one of the most important, and maybe even the best, scientific book of the 17th century.

When it was released, it made Galileo quite famous as a scientist and thinker. He wrote Assayer in Italian rather than Latin, to make it more accessible to everyone. It also means that his writing style is much more informal and colloquial than other science books that were published at the time.

In this witty yet informative book, Galileo makes several important points about how we understand our world and how scientists should go about learning the truth.

First, he argues that all of our knowledge comes from sensory experience: when we see something or hear something, for example. This is an early form of empiricism—the idea that all of our knowledge is based on sensory experience—and it was very controversial because many people believed that reason alone could give us knowledge.

Also like many modern empiricists, Galileo argues that sensory experience can be misleading when we aren’t careful about how we think about it. For example, we may believe what others tell us about how things are when we haven’t seen them ourselves or have only seen things in a certain context.


Galileo Other Accomplishments

-He wrote the first book on the science of motion.

-He invented a powerful telescope and improved on the design of an older, more primitive one.

-He created a device that could measure the pulse rate using only a finger.

-He built devices to measure temperature and humidity.

In 1638, Galileo published “Discourses Concerning Two New Sciences,” a book about projectile motion, which is any movement an object undergoes after being launched into the air or space.

Among other things, he described how speed and distance are related during free fall by calculating acceleration due to gravity. This helped explain why all objects fall at the same rate regardless of their mass or density.

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