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Instituto de Plasmas e Fusão Nuclear (IPFN) (Institute for Plasmas and Nuclear Fusion) is a research unit of Instituto Superior Técnico (IST), Lisbon, and a leading Portuguese institution in physics research.
E 0 (t) is the free or zero-point field acting on the dipole. It is the homogeneous solution of the Maxwell equation for the field acting on the dipole, i.e., the solution, at the position of the dipole, of the wave equation [ ∇ 2 − 1 c 2 ∂ 2 ∂ t 2 ] E = 0 {\displaystyle \left[\nabla ^{2}-{\frac {1}{c^{2}}}{\frac {\partial ^{2 ...
Nísia Floresta Brasileira Augusta, pseudonym of Dionísia Gonçalves Pinto, (October 12, 1810 in Papari, Rio Grande do Norte – April 24, 1885 in Rouen, France) was a Brazilian educator, translator, writer, poet, philosopher, and feminist.
The word Brazil probably comes from the Portuguese word for brazilwood, a tree that once grew plentifully along the Brazilian coast. [31] In Portuguese, brazilwood is called pau-brasil, with the word brasil commonly given the etymology "red like an ember", formed from brasa ('ember') and the suffix -il (from -iculum or -ilium). [32]