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1 day ago · Little is understood about physics in this environment. Traditional big bang cosmology predicts a gravitational singularity — a condition in which spacetime breaks down —before this time, but the theory relies on the theory of general relativity, which is thought to break down for this epoch due to quantum effects.
1 day ago · The superluminal phase velocity does not violate special relativity, similar to the case above for non-isotropic media. See the article on Dispersion (optics) for further details. Special relativity. Using two formulas from special relativity, one for the relativistic mass energy and one for the relativistic momentum
1 day ago · Relativity In special and general relativity , some formulas for the metric on spacetime become simpler if one takes the time component of the spacetime continuum to be imaginary. (This approach is no longer standard in classical relativity, but is used in an essential way in quantum field theory .)
1 hour ago · Sustainability is a social goal for people to co-exist on Earth over a long time. Definitions of this term are disputed and have varied with literature, context, and time. [2] [1] Sustainability usually has three dimensions (or pillars): environmental, economic, and social. [1]
1 hour ago · t. e. The cosmic microwave background ( CMB or CMBR) is microwave radiation that fills all space in the observable universe. It is a remnant that provides an important source of data on the primordial universe. [1] With a standard optical telescope, the background space between stars and galaxies is almost completely dark.
1 day ago · v. t. e. Pseudoscience consists of statements, beliefs, or practices that claim to be both scientific and factual but are incompatible with the scientific method. [Note 1] Pseudoscience is often characterized by contradictory, exaggerated or unfalsifiable claims; reliance on confirmation bias rather than rigorous attempts at refutation; lack of ...
1 day ago · Howard Hughes. Howard Robard Hughes Jr. (December 24, 1905 – April 5, 1976) was an American aerospace engineer, business magnate, film producer, investor, philanthropist, and pilot. [2] He was best known during his lifetime as one of the richest and most influential people in the world. He first became prominent as a film producer, and then ...
