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- DictionaryProp·a·ga·tion/ˌpräpəˈɡāSH(ə)n/
noun
- 1. the breeding of specimens of a plant or animal by natural processes from the parent stock: "the propagation of plants by root cuttings"
- 2. the action of widely spreading and promoting an idea, theory, etc.: "a life devoted to the propagation of the Catholic faith"
21 hours ago · Wave. Surface waves in water showing water ripples. In physics, mathematics, engineering, and related fields, a wave is a propagating dynamic disturbance (change from equilibrium) of one or more quantities. Periodic waves oscillate repeatedly about an equilibrium (resting) value at some frequency. When the entire waveform moves in one direction ...
21 hours ago · Heat equation. Animated plot of the evolution of the temperature in a square metal plate as predicted by the heat equation. The height and redness indicate the temperature at each point. The initial state has a uniformly hot hoof-shaped region (red) surrounded by uniformly cold region (yellow). As time passes the heat diffuses into the cold region.
21 hours ago · Probability theory. In probability theory and statistics, a normal distribution or Gaussian distribution is a type of continuous probability distribution for a real-valued random variable. The general form of its probability density function is The parameter is the mean or expectation of the distribution (and also its median and mode), while ...
21 hours ago · IEEE 802.11 is also a basis for vehicle-based communication networks with IEEE 802.11p. The standards are created and maintained by the Institute of Electrical and Electronics Engineers (IEEE) LAN/ MAN Standards Committee (IEEE 802). The base version of the standard was released in 1997 and has had subsequent amendments.
