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9 hours ago · History Early history. The hypothesis of dark matter has an elaborate history. In the appendices of the book Baltimore lectures on molecular dynamics and the wave theory of light where the main text was based on a series of lectures given in 1884, Lord Kelvin discussed the potential number of stars around the Sun from the observed velocity dispersion of the stars near the Sun, assuming that ...
9 hours ago · v. 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.
9 hours ago · Epileptic spike and wave discharges monitored EEG. [ edit on Wikidata] Electroencephalography ( EEG) is a method to record an electrogram of the spontaneous electrical activity of the brain. The biosignals detected by EEG have been shown to represent the postsynaptic potentials of pyramidal neurons in the neocortex and allocortex. [1]
1 day ago · Public health is "the science and art of preventing disease, prolonging life and promoting health through the organized efforts and informed choices of society, organizations, public and private, communities and individuals". [1] [2] Analyzing the determinants of health of a population and the threats it faces is the basis for public health. [3]
9 hours ago · Venus is the second planet from the Sun. It is a terrestrial planet and is the closest in mass and size to its orbital neighbour Earth. Venus is notable for having the densest atmosphere of the terrestrial planets, composed mostly of carbon dioxide with a thick, global sulfuric acid cloud cover.
9 hours 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 day ago · Study with Quizlet and memorize flashcards containing terms like DNA and RNA both contain nitrogenous bases, a phosphate group, and 5-C sugar, DNA contains Ribose sugar and RNA contains deoxyribose sugar, To detect starch, iodine can be applied directly to the tested material and more.
