Antoine Lefevre 
IN BRIEF Fundamental principle: stimulated emission, discovered by Albert Einstein. Structure: a laser includes a gain medium and a pumping system. Coherence of light: the produced photons have identical characteristics. Varied applications: fundamental research, industry, telecommunications, medicine. Beam properties: confinement of the wave by reflecting mirrors. The physics behind lasers is a fascinating and complex … Read more
IN BRIEF Uncertainty principle stated by Heisenberg in 1927 Inverse relationship between position and momentum The more we know about position, the less we can know about momentum, and vice versa Observation of a particle changes its state Impacts on quantum physics and understanding of the universe Leads to reflections in philosophy and psychology Used … Read more
IN BRIEF Definition of acoustics: the science of sound and the study of mechanical waves. Acoustic comfort: Importance of reducing noise for well-being. Industrial applications: Use of sound in various sectors, including telecommunications. Acoustic waves: Daily usage such as sonar in boats. Environmental acoustics: Improving sound comfort in our living spaces. Physiological acoustics: Relationship between … Read more
IN BRIEF Theory of Everything: quest for unification of fundamental interactions. Bringing together general relativity and quantum mechanics: a major challenge of modern physics. History: the search for a unitary theory initiated by giants like Einstein. Four forces of nature: ultimate goal of physics. Contemporary theories: at the forefront are string theory and unified fields. … Read more
IN SHORT Particle accelerators: essential devices for exploring nuclear physics and particle physics. CERN: home to the world’s largest circular accelerator. Used in various fields: fundamental research and science popularization. Current limitations: high cost, insufficient power, and fragility of existing accelerators. Past and ongoing experiments: exploration of elementary particles. Operation: acceleration of particle beams for … Read more
IN BRIEF Types of forces acting on bridges: gravitational, compression, tension, etc. Stability of structures is essential for safety Symmetrical design for better force distribution Importance of material strength in construction Falls of loads and soil reinforcement to prevent sinking Assessment of allowable deformations and financial costs Dynamics of bridges to ensure resistance to natural … Read more
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
IN BRIEF Must-watch scientific documentaries on physics. Discovering the universe through captivating films. Varied themes: from quantum to elementary particles. Best platforms to watch: Netflix, YouTube, and others. Recent films: Oppenheimer, The James Webb Telescope. Series to follow for learning: Rick and Morty, The Big Bang Theory. Impact of science on our daily lives and … Read more
IN BRIEF Medical physics: intersection between physics and medicine. Use of ionizing radiation for diagnosis and therapy. Medical imaging: techniques that transform diagnosis through various modalities. Role of the medical physicist in the development and application of imaging technologies. Ultrasound: use of sound waves for non-invasive imaging. Advances in radiotherapy for the treatment of diseases. … Read more
IN BRIEF Definition of semiconductors: materials that have intermediate electrical properties. Types of semiconductors: intrinsic and doped. Applications: found in smartphones, computers, and vehicles. Impact on power electronics: control and conversion of electrical energy. Key role in artificial intelligence: processing speed and energy efficiency. Recent innovations: evolution towards nano-technologies and reduction of energy consumption. Essential … Read more