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Hace 1 día · Newton's first law expresses the principle of inertia: the natural behavior of a body is to move in a straight line at constant speed. A body's motion preserves the status quo, but external forces can perturb this. The modern understanding of Newton's first law is that no inertial observer is privileged over any other.
Hace 1 día · The physics controlling this very early period (including quantum gravity in the Planck epoch) is not understood, so we cannot say what, if anything, happened before time zero. Since the Planck epoch, the universe has been expanding to its present scale, with a very short but intense period of cosmic inflation speculated to have occurred within the first 10 −32 seconds. [40]
Hace 3 días · contributed. Quantum mechanics [QM] is a branch of physics which describes physical systems so that properties like the energy or angular momentum are discrete quantities that are multiples of a smallest unit or quantum. A famous physicist named Erwin Schrödinger made an example of quantum mechanics, often called Schrödinger's cat.
Hace 3 días · In geometry and physics, spinors (/ s p ɪ n ər /) are elements of a complex number-based vector space that can be associated with Euclidean space. [b] A spinor transforms linearly when the Euclidean space is subjected to a slight ( infinitesimal ) rotation, [c] but unlike geometric vectors and tensors , a spinor transforms to its ...
Hace 5 días · Space & Physics coverage from Scientific American, featuring news and articles about advances in the field.
Hace 2 días · Stay informed about groundbreaking discoveries, technological advancements, and theoretical breakthroughs that deepen our understanding of the cosmos and reshape our perspective on reality. Popular physics news topics include Particle, Nuclear, and Quantum Physics, as well as Astrophysics, Biophysics, Heliophysics, Geophysics, and ...
Hace 4 días · Stanford Institute for Theoretical Physics. Our research includes a strong focus on fundamental questions about the new physics underlying the Standard Models of particle physics, cosmology, and gravity; and the nature and applications of our basic frameworks (quantum field theory and string theory) for attacking these questions.
