Who discovered gravity?
Sir Isaac Newton was the man who first coined the term gravity back in 1665 or 1666. Sir Isaac Newton was an English physicist and mathematician that was actually known for his stunning IQ and as a culminating figure for science during the 17th century.
Legend has it, that Sir Isaac Newton was sitting underneath an apple tree when an apple fell from said tree. This apple hit (or landed) near Newton, and he asked the question – why does the apple just fall down? Why does it not go left, upwards, or in another direction?
This prompted Newton to investigate and write up various books and scriptures outlining what his beliefs were about gravity, and why objects simply fall. This theory came way before any human had considered space flight, where gravity doesn’t exist.
Sir Isaac Newton didn’t only identify an invisible force, but also predicted the future of having this force pull objects (including ourselves) to the ground, all from a simple apple falling from a tree.
When was Gravity invented?
The idea that gravity was “invented” is not actually true, but rather when the term was coined. Gravity has been around since the start of time but was coined by Sir Isaac Newton back in 1665 (possibly 1666) when an apple fell in on his head. You can find out more about this in the above and below paragraphs!
Who discovered the Law of Gravity?
The Law of gravity was believed to be first picked up and coined by Sir Isaac Newton in 1665/1666 in England. However, since then and somewhat controversially, an Italian man named Galileo Galilei was one of the first scientists to investigate why some objects move the way they do. It wasn’t until the late 1687s that Newton published his law of gravitation and provided hard evidence (and plenty of mathematical equations) that describe why objects move the way they do and outlined the invisible gravitational field we all know as gravity.
Closely related, but several centuries later – Albert Einstein developed his theories for general relativity which in turn, described and strongly referenced gravity as the deformation of space, but that’s another story!
What is Gravity?
Gravity is an invisible force where a planet or other body draws objects to its core. This force of gravity allows all the planets in our solar system to orbit perfectly around the sun. The best way to see how gravity works are to simply pick up an object, and drop it. Notice how the object falls to the ground.
Anything that has some kind of “mass” (I.e any object that is physical or has any weight) also has a gravitational force. The force also becomes weaker the further away you are. This is why there is no gravity in open space until you get closer to planets where the planet wants to suck the object in.
The mathematical equation for gravity is as follows;
Force = Gravitational Field – Mass of Object over Distance of the Masses (centre to centre).
The image below shows a better way to view this; where;
- F = Force
- G = Gravitational Constant
- M1 = Mass of Object 1
- M2 = Mass of Object 2
- R = Distance between centres of the two mass objects.
Overall, we all have to thank Sir Isaac Newton and Galileo Galilei for their research and time to this amazing force and for helping us understand how our world works and how our planets work. If you want to read more about how our world works, take a look at OnlyQuestion’s content for all things Science!