Physics is the science in charge of studying the phenomena of the universe and the properties of matter . With it, parameters can be established that allow us to measure everything that exists and interpret the reality that surrounds us.Physics, throughout history, has received the contribution of outstanding minds, such as Galileo, Newton and Einstein, to give a mathematical sense to phenomena such as gravitation, motion, the transport of fluids, and the systems of forces. .The mathematical models that scientists have set to calculate physical processes are called Physical Laws . Some of the most prominent are the Law of Gravity, the Laws of Thermodynamics, Hooke’s Law, and Coulomb’s Law.

What is Physics for?

Since ancient cultures, humanity has applied Physics to solve practical problems that involved what exists, such as stones, levers, and bodies that move or fall.

Later, and as expected, Physics had the function of disproving myths and conceptions about physical and even chemical phenomena. These have already been taken for the benefit of science.

Physics serves to:

  • Creation of machines
  • Technology development
  • Study matter and energy
  • Build weapons

Creation of machines

Physics, through its laws, helps humanity to create from simple machines (lever, pulley, inclined plane, etc.), to complex devices , such as mills, agitators, turbines.

This utility of Physics is a great support for the industry, which transforms tons of raw materials into finished products, through specific processes.

Technology development

Based on the phenomena studied, the quality and performance of the machines created with Physics are better. This continuous progress delivers technology with superior features every time.

Without Physics, the inventions that make up everyday life could not have been conceived, such as:

  • Electric light bulb
  • Stoves
  • Trains
  • Boats
  • carts
  • Electric vehicles
  • Internal combustion vehicles
  • Planes
  • Spaceships
  • Domestic telephones
  • Radio wave communication
  • Artificial satellites
  • Cellphones
  • Internet

Study matter and energy

Newton’s Third Law: Action-Reaction

The study of matter is due to Physics, encompassing properties such as:

  • Density (Amount of matter in each volume unit, Kg / m 3 )
  • Boiling Point (Boiling Temperature, ° C)
  • Melting Point (Melting Temperature, ° C)
  • Malleability (ability to convert to plates)
  • Electrical conductivity (Ability to carry an electrical current, microSiemens, mS)
  • Thermal conductivity (Energy transmitted in a material for each square meter of area and degree of temperature that increases in it, KJ / m 2 ° C)

As for energy, different natures of it have been studied in Physics:

  • Mechanical energy
  • Electric power
  • Chemical energy
  • Radiant energy
  • Thermal energy

Build weapons

Unfortunately, a destructive use has been given to Physics, which consists in the creation of weapons. These weapons are designed to emit radiation or a chemical substance that damages the integrity of the people with whom it comes in contact.

They can be based on nuclear technology and radioactive elements.

Samantha Robson
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Dr. Samantha Robson ( CRN: 0510146-5) is a nutritionist and website content reviewer related to her area of ​​expertise. With a postgraduate degree in Nutrition from The University of Arizona, she is a specialist in Sports Nutrition from Oxford University and is also a member of the International Society of Sports Nutrition.

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