5 Great Discoveries of Modern Physics.

Matter is made up of atoms. All matter in the universe is made up of atoms. In the 21st century, this precept is obvious, but humanity spent millennia asking this question, and it is the basis of different branches of physics, such as atomic physics, statistical mechanics, and particle physics. Image generated with AI

Relativity. Formulated in 1905 by the German physicist Albert Einstein, this theory was a complete revolution in physics and the way we viewed the universe. This theory transformed the idea of space-time and matter-energy, ending the concept of absolute time that came from classical mechanics and bequeathing us one of the most famous formulas in history: e=mc².

The fundamental forces of nature.

• The force of gravity. Every body with mass has gravity.
• The electromagnetic force, which is the union of electricity, lightning, and magnetism.
• The strong nuclear force. This is what holds the nuclei of atoms. together.
• The weak nuclear force, which consists of radioactivity.

Quantum mechanics. Another great revolution of the 20th century. It arose from the study of the contradictions of matter at its smallest scale: atoms, molecules, and subatomic particles. It changed our ideas about time, space, and reality, and includes concepts such as quantum superposition and quantum tunneling.

The Big Bang. This theory states that the universe has a beginning. It was postulated by the Belgian priest George Lemaitre , considered the father of the Big Bang theory, and he based it on the theory of relativity.