Einstein - sa vie - biographie Effet photoélectrique: la lumière peut-être considérée comme constituée de particules, les photons. Leur énergie est proportionnelle à la fréquence du rayonnement: E = hn L'énergie contenue dans un faisceau de lumière est transférée sous forme de paquets, les quanta. Personne n'admet cette théorie. Elle sera redécouverte expérimentalement 10 ans plus tard par Robert Andrews Millikan. Puis, Einstein contribue au développement qui fusionne les modèles ondulatoires et corpusculaires de la lumière. Einstein émet l'idée que les mesures d'espace et de temps dépendent de l'évaluation de la simultanéité de deux événements distants. Il développe une théorie basée sur deux postulats : le principe de la relativité, selon lequel toutes les lois de la physique sont identiques dans tous les repères inertiels, et le principe de l'invariance de la vitesse de la lumière, selon lequel la vitesse de la lumière dans le vide est une constante universelle. Quasiment personne ne comprit l'argumentation d'Einstein.
A Science Odyssey Access Instructions | Technical Notes and Help | Web Site Credits | D WGBH | PBS Online | Search | Printable Version | Feedback | Shop Backstitching Time with Cosmic String, Alaska Science Forum June 24, 1992 Backstitching Time with Cosmic String Article #1089 by Carla Helfferich This article is provided as a public service by the Geophysical Institute, University of Alaska Fairbanks, in cooperation with the UAF research community. Carla Helfferich is a science writer at the Institute. Cosmology is physics on the grandest scale, the study of inconceivably vast distances and unbelievably long durations. Consider, for example, a topic now challenging cosmologists: the theoretical possibility of traveling backward through time. Imagine that sheet, the fabric of spacetime, as the surface of a trampoline. Reversing time leads to all manner of paradoxes and problems; the idea has produced many enjoyable pages of science fiction, but most physicists loathe it. However, Einstein also had been untroubled by another theoretical entity, the cosmic string. Princeton physicist J. For those of you now shouting, "Warp eight, Mr. That interesting possibility wasn't enough for Gott.
Los archivos completos de Eintein, en la red La Universidad Hebrea de Jerusalén ha comenzado a publicar en Internet todos los manuscritos personales y científicos de Albert Einstein. Miles de documentos donde descubrir al Premio Nobel de Física y al hombre que había detrás: desde su teoría de la relatividad escrita a mano a las cartas de amor prohibidas. (Fuente: Euronews) Copyright © 1996-2015 Amazings® / NCYT® | (Noticiasdelaciencia.com / Amazings.com). Albert Einstein - Biographie Questions and Answers on Albert Einstein Albert Einstein was born at Ulm, in Württemberg, Germany, on March 14, 1879. Six weeks later the family moved to Munich, where he later on began his schooling at the Luitpold Gymnasium. Later, they moved to Italy and Albert continued his education at Aarau, Switzerland and in 1896 he entered the Swiss Federal Polytechnic School in Zurich to be trained as a teacher in physics and mathematics. In 1901, the year he gained his diploma, he acquired Swiss citizenship and, as he was unable to find a teaching post, he accepted a position as technical assistant in the Swiss Patent Office. During his stay at the Patent Office, and in his spare time, he produced much of his remarkable work and in 1908 he was appointed Privatdozent in Berne. After World War II, Einstein was a leading figure in the World Government Movement, he was offered the Presidency of the State of Israel, which he declined, and he collaborated with Dr.
Human's Playground: Genetic Engineering - Biology As of July 1, 2013 ThinkQuest has been discontinued. We would like to thank everyone for being a part of the ThinkQuest global community: Students - For your limitless creativity and innovation, which inspires us all. Teachers - For your passion in guiding students on their quest. Partners - For your unwavering support and evangelism. Parents - For supporting the use of technology not only as an instrument of learning, but as a means of creating knowledge. We encourage everyone to continue to “Think, Create and Collaborate,” unleashing the power of technology to teach, share, and inspire. Best wishes, The Oracle Education Foundation
Boundary Institute - Home Page MendelWeb Homepage 97.1 Albert Einstein Albert Einstein (/ˈælbərt ˈaɪnʃtaɪn/; German: [ˈalbɐrt ˈaɪnʃtaɪn]; 14 March 1879 – 18 April 1955) was a German-born theoretical physicist. Einstein's work is also known for its influence on the philosophy of science. He developed the general theory of relativity, one of the two pillars of modern physics (alongside quantum mechanics).:274 Einstein is best known in popular culture for his mass–energy equivalence formula E = mc2 (which has been dubbed "the world's most famous equation"). He received the 1921 Nobel Prize in Physics for his "services to theoretical physics", in particular his discovery of the law of the photoelectric effect, a pivotal step in the evolution of quantum theory. Near the beginning of his career, Einstein thought that Newtonian mechanics was no longer enough to reconcile the laws of classical mechanics with the laws of the electromagnetic field. This led to the development of his special theory of relativity. Life Early life and education Death
Math in Daily Life When you buy a car, follow a recipe, or decorate your home, you're using math principles. People have been using these same principles for thousands of years, across countries and continents. Whether you're sailing a boat off the coast of Japan or building a house in Peru, you're using math to get things done. How can math be so universal? First, human beings didn't invent math concepts; we discovered them. Join us as we explore how math can help us in our daily lives. Ready to get started?