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3 days ago · The heat death of the universe (also known as the Big Chill or Big Freeze) [1] [2] is a hypothesis on the ultimate fate of the universe, which suggests the universe will evolve to a state of no thermodynamic free energy, and will therefore be unable to sustain processes that increase entropy.
2 days ago · The wonders we see in the universe “should draw us out of ourselves,” an Ivy League scientist said last week, “looking out not just towards the wonders themselves and towards the truths they reveal, but also towards the source of all truths and the ultimate Creator of all things.”. Karin Öberg, professor of astronomy and director of ...
5 days ago · January, February, and early March have uniform conditions with mean temperatures about −35 °F (−37 °C) in the central Siberian Arctic and −30 to −20 °F (−34 to −29 °C) in North America. The lowest extreme temperatures in the winter are between −65 and −50 °F (−54 and −46 °C).
2 days ago · Maxwell's equations, or Maxwell–Heaviside equations, are a set of coupled partial differential equations that, together with the Lorentz force law, form the foundation of classical electromagnetism, classical optics, electric and magnetic circuits. The equations provide a mathematical model for electric, optical, and radio technologies, such ...
2 days ago · The effect is used in satellites and spacecraft to reduce temperature differences caused by direct sunlight on one side of a craft by dissipating the heat over the cold shaded side, where it is dissipated as thermal radiation to space.
2 days ago · The Physics of Cold Water May Have Jump-Started Complex Life. When seawater gets cold, it gets viscous. This fact could explain how single-celled ocean creatures became multicellular when the planet was frozen during “Snowball Earth,” according to experiments. Frigid temperatures hundreds of millions of years ago, during ancient periods ...
3 days ago · A polar equation is any equation that describes a relation between r r and \theta θ, where r r represents the distance from the pole (origin) to a point on a curve, and \theta θ represents the counterclockwise angle made by a point on a curve, the pole, and the positive x x -axis.
