A new paper suggests that the mysterious X17 subatomic particle is indicative of a fifth force of nature.
Scientists are exploring a mysterious pattern, found in birds’ eyes, boxes of marbles and other surprising places, that is neither regular nor random.
Kenneth Libbrecht is that rare person who, in the middle of winter, gleefully leaves Southern California for a place like Fairbanks, Alaska, where wintertime temperatures rarely rise above freezing. There, he dons a parka and sits in a field with a camera and a piece of foam board, waiting for snow.
Mass and length may not be fundamental properties of nature, according to new ideas bubbling out of the multiverse.
When quantum mechanics was first developed a century ago as a theory for understanding the atomic-scale world, one of its key concepts was so radical, bold and counter-intuitive that it passed into popular language: the “quantum leap.” Purists might object that the common habit of applying this term to a big change misses the point that jumps between two quantum states are typically tiny, which is precisely why they weren’t noticed sooner. But the real point is that they’re sudden. So sudden, in fact, that many of the pioneers of quantum mechanics assumed they were instantaneous.
Nosso universo é regido por quatro forças elementais: eletromagnetismo, gravidade e as forças nucleares forte e fraca. Elas são associadas a partículas fundamentais, os bósons: fótons para o eletromagnetismo, gravitons (ainda não detectados) para a gravidade, gluons para a força nuclear forte e W e Z para a força nuclear fraca.
Este 24 de noviembre se cumplen 160 años desde la publicación de «El origen de las especies», el libro en el que Charles Darwin estableció las bases de la teoría de la evolución por selección natural.
¿Pero cuánto sabemos sobre la historia de nuestra especie?
¿Y por qué es un error decir que «descendemos de los monos»?
En BBC Mundo recordamos cinco datos que tal vez puedan resultarte sorprendentes sobre la evolución humana.
Alternative facts are spreading like a virus across society. Now it seems they have even infected science—at least the quantum realm. This may seem counter intuitive. The scientific method is after all founded on the reliable notions of observation, measurement and repeatability. A fact, as established by a measurement, should be objective, such that all observers can agree with it.
A new experiment confirms the existence of “superionic ice,” a bizarre form of water that might comprise the bulk of giant icy planets throughout the universe.