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Hace 3 días · Even so, David Joseph Bohm (1917–1992) and Hugh Everett III (1930–1982) sought equally valid theories without any incongruities. In the 1950s, these two American physicists dared to challenge the conventional Copenhagen interpretation with their “pilot wave” and “many-worlds” theories, respectively.
Hace 4 días · No-Boundary Proposal Posits Cosmic Beginnings. By the 1980s, Stephen Hawking was building on his earlier work on black holes to address even bigger questions about the origins of the universe. He collaborated with Cambridge colleague James Hartle on what they called the “no-boundary proposal.”. Their theory suggested that time itself ...
Hace 4 días · Space & Physics coverage from Scientific American, featuring news and articles about advances in the field.
Hace 2 días · The present moment is that time where events ‘come into being’ (temporal ‘becoming’ in philosophical jargon). This emergence of time is part of an ‘enlargement’ (or ‘growth’) of the spacetime block and, as such, provides the passage of time. The global direction of time’s passage is conferred by the expansion of the universe.
Hace 3 días · A laser technique, which has a time resolution of only a few femtoseconds, captures how photoexcited electrons can influence the chirality — or handedness — of neutral molecules.
Hace 3 días · Physics, science that deals with the structure of matter and the interactions between the fundamental constituents of the observable universe. Its scope of study encompasses not only the behavior of objects under the action of forces but also gravitational, electromagnetic, and nuclear force fields.
Hace 4 días · For students, teachers, scientists, and readers of popular science books, the Guide deciphers the techniques and philosophies of physics and astronomy as well as the historical periods from which they emerged.
