Since gravity is often mentioned in many branches of science, we are going to talk about gravity definition in this article. During physics classes, you might hear many people casually mentioning about gravity. However, some of them might not know about the definition of gravity itself. Gravity, which is also known as gravitation, refers to specific natural phenomenon. It happens when an object is pulled toward other object with greater mass. The force pulling the object is called as gravitational force. Gravitational force can happen in large spectrum from microscopic atoms up to celestial body. In order to understand this natural phenomenon, perhaps the best way to do it is by tracing back the discovery and understanding the gravity examples.
Gravity Definition and Its Concept Discovery
Gravity definition science already exists before people understand the concept. However, several leading scientists back then discover the concept. It began during the scientific revolution. This concept is brought by Italian scientist named Galileo Galilei. By the end of 16th century he made an interesting experience involving local landmark. He dropped balls for the famous leaning tower of Pisa. From the experiment, he figured out that gravitational force works unexceptionally regardless the mass of object used. Air resistance causes the speed changes on the moving object. Due to this circumstance, object with bigger mass tends to fall faster than the one with less mass. This experiment becomes one of the popular gravity examples.
The work of Galileo about the definition of gravity is continued by Sir Isaac Newton. The story of Newton figuring out the concept of gravity is often associated with apple fell on his head. His background as mathematician helps to calculate the previous concept. In his era, the gravity definition is established with strong foundation. The complete calculation of Newton is published in a popular book entitled Principia. In this book, he mentioned that gravitational force is equal to the square distance of an object to other objects in which it revolves on.
Other than the concept, he also explains the formula to calculate gravity definition science. The formula involves gravitational constant. This number remains the same regardless the distance of an object revolving to other object. Surprisingly enough, this formula can be applied in many things affected by gravity. One of the best gravity examples is the movement of moon towards the Earth. Newton formula becomes popular right after it helps the discovery of Neptune. That being said, it cannot explain the inconsistency in the movement of Mercury. It becomes a big flaw of Newton discovery.
Three centuries later, the flaws on Newton formula is resolved by Albert Einstein. He helps to figure out the reason of inconsistency of Mercury movement. His theory on definition of gravity is further known as the theory of general relativity. Based on his theory about gravity definition, gravitational force is not only governed the celestial body, but also microscopic atom as well. The works of Einstein is not completely replacing the Newton theory. Modern calculation of gravity remains using Newton theory. This non-relativistic formula is able to provide accurate result on gravity definition science.