Gravity is the force of attraction that bodies have based on their mass.
From the Latin gravĭtas , gravity is a physical force that the Earth exerts on all bodies towards its center. It is also the force of attraction of bodies due to their mass .
Gravity is linked to weight , which is the force of gravity exerted by the mass of the planet on all objects within its gravitational field. The weight of the same body can vary on different planets if their mass is different from the mass of the Earth.
Newton, Einstein and gravity
The English physicist, mathematician, philosopher and inventor Sir Isaac Newton was the one who proposed the law of universal gravitation or theory of gravity . Newton stated that every object that has mass exerts a gravitational attraction on every other object with mass, regardless of the distance between them. The greater the mass, the greater the force of attraction; on the other hand, the closer the objects are, the greater the force of attraction.
However, we must not forget the fact that throughout history there have been other scientists and researchers who have also left their mark on the term gravity. This would be the case, for example, of the German physicist Albert Einstein, who is known precisely for his theory of general relativity .
In 1915, he presented this theory to the scientific community, which we could basically say is a reformulation of the term gravity. Specifically, what he did was establish that gravity, rather than a force of attraction, is an example of the distortion of space-time geometry. A distortion that is clearly influenced by the set of objects that form part of it.
The idea of gravity can be linked to the importance of an illness or injury: "The accident left three people seriously injured."
Circumspection and importance
In another sense, the notion of gravity is related to composure and circumspection . For example: "Solemnly, the government spokesman gravely announced the death of the prime minister" , "I don't like dinners where everyone acts with gravity and without spontaneity" .
The term also refers to the greatness , importance or enormity of an issue: "The seriousness of the epidemic was made clear by the death of twenty people in the metropolitan area of the city" , "The police officer was seriously injured after receiving four bullet impacts in his body" .
Gravity in medicine
As for relevance, there are several specific types of severity. Thus, in the field of medicine, we can establish that there are the following levels:
Mild. In this case, the patient's symptoms cause minimal disruption to his or her work or social activities.
Moderate. The person's symptoms are somewhere between mild and severe.
Serious. The illness or pathology that someone suffers from significantly damages the aforementioned activities.
Partial remission. This term means that only some of the symptoms the patient had remain.
Complete remission. In this case, the patient has seen all the symptoms of their disorder disappear, but this does not mean that it is not necessary to continue having check-ups to keep it under control.