** There are legal restrictions on gravitational knives in Kansas.

** The difference between the two-the differential gravitational effect of the unevenness of the terrain-is called the terrain effect.

** Planck time, the time scale beneath which quantum effects are comparable in significance to gravitational effects

** Newton's gravitational constant

** Klemperer rosette, a gravitational system first described by Wolfgang Klemperer

** May be caused by mass effect or venous dilatations.

** Community ecology: community — keystone species — mimicry — symbiosis — pollination — mutualism — commensalism — parasitism — predation — invasive species — environmental heterogeneity — edge effect

** genetic interactions — Mendel's law of segregation — genetic mosaic — maternal effect — penetrance — complementation — suppression — epistasis — genetic linkage

** chromosomal effects: chromosome — haploid — diploid — polyploidy — dosage effect — inbreeding

** Causality and Dependence ( cause and effect )

** Self-focusing, an effect due to the Optical Kerr effect ( and possibly higher order nonlinearities ) caused by the spatial variation in the intensity creating a spatial variation in the refractive index

** Self-phase modulation ( SPM ), an effect due to the Optical Kerr effect ( and possibly higher order nonlinearities ) caused by the temporal variation in the intensity creating a temporal variation in the refractive index

** Optical solitons, An equilibrium solution for either an optical pulse ( temporal soliton ) or Spatial mode ( spatial soliton ) that does not change during propagation due to a balance between diffraction and the Kerr effect ( e. g. Self-phase modulation for temporal and Self-focusing for spatial solitons ).

** Pasteur effect

** Inverted-T field effect transistor ( ITFET )

** the name of the document which gives effect to the appointment.

** The Italian republican constitution goes into effect.

** The latest New Jersey State Constitution goes into effect.

** Daylight saving time goes into effect in the United States.

** The Community Charge ( poll tax ) takes effect in England and Wales amid widespread protests

** The nuclear test ban treaty, signed on August 5, takes effect.

** Nurses Registration Act 1901 comes into effect in New Zealand, making it the first country in the world to require state registration of nurses.

** The Kellogg-Briand Pact, renouncing war as an instrument of foreign policy, goes into effect ( it was first signed in Paris on August 27, 1928 by most leading world powers ).

** A ceasefire takes effect in the Algerian War of Independence.

** The Interstate Commerce Commission's federal order banning segregation at all interstate public facilities officially comes into effect.

** Estonia holds a referendum on its constitution, that will come into effect on July 3.

** The Constitution of Bangladesh comes into effect.

** Eunectes murinus, the green anaconda, the largest species, is found east of the Andes in Colombia, Venezuela, the Guianas, Ecuador, Peru, Bolivia, Brazil and on the island of Trinidad.

** Eunectes notaeus, the yellow anaconda, a smaller species, is found in eastern Bolivia, southern Brazil, Paraguay and northeastern Argentina.

** Eunectes deschauenseei, the dark-spotted anaconda, is a rare species found in northeastern Brazil and coastal French Guiana.

** Eunectes beniensis, the Bolivian anaconda, the most recently defined species, is found in the Departments of Beni and Pando in Bolivia.

** Tarski's theorem: For every infinite set A, there is a bijective map between the sets A and A × A.

** The Cartesian product of any family of nonempty sets is nonempty.

** König's theorem: Colloquially, the sum of a sequence of cardinals is strictly less than the product of a sequence of larger cardinals.

** Hausdorff maximal principle: In any partially ordered set, every totally ordered subset is contained in a maximal totally ordered subset.

** For every non-empty set S there is a binary operation defined on S that makes it a group.

** Tychonoff's theorem stating that every product of compact topological spaces is compact.

** In the product topology, the closure of a product of subsets is equal to the product of the closures.

** If S is a set of sentences of first-order logic and B is a consistent subset of S, then B is included in a set that is maximal among consistent subsets of S. The special case where S is the set of all first-order sentences in a given signature is weaker, equivalent to the Boolean prime ideal theorem ; see the section " Weaker forms " below.

** Any union of countably many countable sets is itself countable.

** If the set A is infinite, then there exists an injection from the natural numbers N to A ( see Dedekind infinite ).

** Every infinite game in which is a Borel subset of Baire space is determined.

** The Vitali theorem on the existence of non-measurable sets which states that there is a subset of the real numbers that is not Lebesgue measurable.

** The Lebesgue measure of a countable disjoint union of measurable sets is equal to the sum of the measures of the individual sets.

** The Nielsen – Schreier theorem, that every subgroup of a free group is free.