spectrum limit
1Spectrum analyzer — A spectrum analyzer Spectrum analyzer display A spectrum analyzer measures the magnitude of an input signal versus frequency with …
2Spectrum of a C*-algebra — The spectrum of a C* algebra or dual of a C* algebra A, denoted Â, is the set of unitary equivalence classes of irreducible * representations of A. A * representation π of A on a Hilbert space H is irreducible if, and only if, there is no closed… …
3Limit cardinal — In mathematics, limit cardinals are a type of cardinal number.With the cardinal successor operation defined, we can define a limit cardinal in analogy to that for limit ordinals: λ is a (weak) limit cardinal if and only if λ is neither a… …
4limit — I (New American Roget s College Thesaurus) Boundary Nouns limit, boundary, bounds, confines; curbstone, term, edge; compass; bourne, verge, pale; termination, terminus, end, terminal, extremity; stint; frontier, precinct, border, marches,… …
5limit — A boundary or end. [L. limes, boundary] critical l. the upper or lower boundary of a laboratory test result that indicates a life threatening value. elastic l. the greatest stress to which a material may be subjected and still be capable of… …
6Greisen–Zatsepin–Kuzmin limit — The Greisen–Zatsepin–Kuzmin limit (GZK limit) is a theoretical upper limit on the energy of cosmic rays (high energy charged particles from space) coming from distant sources. The limit is 5×1019 eV, or about 8 joules. The limit is set by slowing …
7Greisen-Zatsepin-Kuzmin limit — The Greisen Zatsepin Kuzmin limit (GZK limit) is a theoretical upper limit on the energy of cosmic rays from distant sources. Computation of the GZK limit This limit was computed in 1966 by Kenneth Greisencite journal |last=Greisen |first=Kenneth …
8Electromagnetic spectrum — The electromagnetic (EM) spectrum is the range of all possible electromagnetic radiation frequencies. [cite web|url=http://imagine.gsfc.nasa.gov/docs/dict ei.html#em spectrum|title=Imagine the Universe! Dictionary] The electromagnetic spectrum… …
9Frequency-hopping spread spectrum — (FHSS) is a method of transmitting radio signals by rapidly switching a carrier among many frequency channels, using a pseudorandom sequence known to both transmitter and receiver. A spread spectrum transmission offers three main advantages over… …
10Spread spectrum — Passband modulation v · d · e Analog modulation AM · …
