Time in physics: arrow, relativity, and perception

Le temps en physique : flèche, relativité et perception

IN BRIEF Arrow of time: concept linking physical time and our human perception. Relativity: forbids any particle from moving faster than light. Exploration of different times: classical mechanics, general relativity. Elasticity of time: link between physics and neuroscience. Debate over the nature of time: illusion or fundamental entity? Reconciling physical time and psychological time: scientific … Read more

The singularities in physics: what do they mean?

Les singularités en physique : que signifientelles ?

IN BRIEF Gravitational singularity: a region of spacetime where the laws of physics become imprecise. Involves mathematical limits according to the Einstein theory. References to the Penrose theorems and Hawking regarding black holes. Singularities are points where certain physical parameters reach infinity. The hidden singularity implies that physical laws break down. Interest in cosmology to … Read more

Thought experiments in theoretical physics

Les expériences de pensée en physique théorique

IN BRIEF Definition: A thought experiment is a hypothetical method used to explore complex concepts in theoretical physics. Steps: Includes the formulation of hypotheses, the description of imaginary situations, and the analysis of results. Usefulness: Helps to clarify theories, illustrate physical principles, and challenge preconceived ideas. Famous examples: include Galileo’s experiments on falling bodies and … Read more