Search results

From Self-sufficiency
Jump to: navigation, search
  • ...again returned to Key West until July for another tour of ASW training sea phase. ...and [[search and rescue]] ship in an area where high winds and forty foot waves were not uncommon. The pattern of operations was five or six days in port,
    19 KB (2,719 words) - 21:51, 2 July 2010
  • !Phase | Phase 1: Sleep Deprivation
    29 KB (4,323 words) - 19:28, 24 June 2010
  • ...0471370479}}</ref><ref>Salisbury W. W. "Absorbent body for electromagnetic waves", US patent 2599944, June 10, 1952, cited in [http://books.google.com/books ...dar wave strikes the front surface of the dielectric, it is split into two waves of equal intensity.
    4 KB (662 words) - 10:07, 20 September 2010
  • ...s coated with [[carbonyl iron]] or [[ferrite (magnet)|ferrite]]. [[Radar]] waves induce molecular oscillations from the alternating magnetic field in this p ...and non-magnetic substances. By reducing the reflection of electromagnetic waves, this material helps to reduce the visibility of RAM painted aircraft on ra
    7 KB (1,065 words) - 10:08, 20 September 2010
  • ...d density variations, grain size distribution, type of porosity and second-phase content, which can all be correlated with ceramic properties such as mechan ...als which have the capability to [[transmit]] [[light]] ([[electromagnetic waves]]) in the [[visible]] (0.4 – 0.7 micrometers) and mid-[[infrared]] (1...
    28 KB (3,876 words) - 10:08, 20 September 2010
  • ..., thereby generating an AC streaming current at the frequency of the sound waves<ref>Glauser, A.R., Robertson P.A., Lowe, C.R., "An electrokinetic sensor fo ...arallel plate capacitor with a compressible dielectric filling. When sound waves induce a local pressure variation, the spacing of the plates varies at the
    10 KB (1,363 words) - 10:12, 20 September 2010
  • ...e phases: a ''dispersed phase'' (or ''internal phase'') and a ''continuous phase'' (or ''dispersion medium''). A colloidal system may be [[solid]], [[liquid ...loidal foams'', ''colloidal dispersions'', or ''hydrosols''. The dispersed-phase particles or droplets are affected largely by the [[surface science|surface
    27 KB (3,735 words) - 10:13, 20 September 2010
  • ...lline solids, including metals and their alloys, and the construction of [[phase diagram]]s became accessible. Despite all this progress the nature of inter ...s 'pure substance' or 'solute' is such cases and speak of [[phase (matter)|phase]]s instead. The study of such phases has traditionally been more the domain
    26 KB (4,024 words) - 10:13, 20 September 2010
  • ...ex glycols, polyglycol ethers and other compounds. It is also a common gas-phase [[disinfectant]] which is widely used in hospitals to sterilize heat-sensit The reaction also occurs in the gas phase, in the presence of a [[phosphoric acid]] salt as a catalyst.<ref name="oe3
    82 KB (11,709 words) - 21:31, 20 September 2010
  • * [[Berry's phase]] — [[Michael V. Berry]] ...]], [[Gibbs free energy|free energy]], [[Gibbs paradox|paradox]], [[Gibbs' phase rule]], [[Gibbs phenomenon]] — [[Josiah Willard Gibbs]]
    64 KB (7,072 words) - 21:05, 21 September 2010
  • |accessdate=2009-06-27}}</ref> || Phase separation || [[S. Allen]] and [[John W. Cahn]] | [[Avrami equation]] || Phase transformation || [[Melvin Avrami]]
    28 KB (3,216 words) - 21:06, 21 September 2010
  • The late phase is dependent upon atrial contraction and is therefore absent in patients wi ...astolic filling. Most filling (70-75%) of the ventricle occurs during this phase.
    5 KB (804 words) - 21:29, 21 September 2010
  • ...If the sum of these phase lags reaches 360°, the output signal will be in phase with the input signal. Feeding back any portion of this output signal to t ...input that adds an additional -180° to the output phase making the total phase shift -360° and (b) the gain is sufficient to induce oscillation.
    9 KB (1,409 words) - 14:47, 10 December 2011
  • ...lattice phase equaliser was invented by [[Otto Zobel]].<ref>Zobel, O J, ''Phase-shifting network'', US patent 1 792 523, filed 12 March 1927, issued 17 Feb ...dcasters for stereo transmissions are equalised to very tight differential phase specifications.
    10 KB (1,512 words) - 14:48, 10 December 2011
  • ...whose purpose is to pass waves of certain [[wavelength]]s while rejecting waves of other wavelengths. Network synthesis starts out with a specification fo ...n. The Bessel filter has minimal distortion in the time domain due to the phase response with frequency as opposed to the Butterworth filter which has mini
    11 KB (1,738 words) - 14:48, 10 December 2011
  • .../math> is complex, this is to be interpreted as a shift in [[phase (waves)|phase]] of the reflected wave relative to the incident wave.<ref>Connor, pp.30-31 ...a pure [[electrical reactance|reactance]]. There is, however, a change of phase in the reflection given by<ref>Matthaei ''et al.'', pp.34-42.</ref>
    23 KB (3,658 words) - 14:49, 10 December 2011
  • ...lar [[stopband]] specification, but Butterworth filters have a more linear phase response in the pass-band than Chebyshev Type I/Type II and elliptic filter and the [[Phase (waves)|phase]] is given by
    17 KB (2,648 words) - 14:50, 10 December 2011
  • ...requency of its oscillator to keep the phases matched. The signal from the phase detector is used to control the oscillator in a [[feedback loop]]. ...ies keeping the input and output frequencies in lock step. Consequently, a phase-locked loop can track an input frequency, or it can generate a frequency th
    37 KB (5,933 words) - 14:50, 10 December 2011
  • ...r "difference" frequency produced when two or more radio frequency carrier waves are fed to a [[Detector (radio)|detector]]. The term was coined by Canadian ...FM signals may be detected using a discriminator, [[ratio detector]], or [[phase-locked loop]]. [[Continuous wave]] ([[morse code]]) and [[single sideband]]
    31 KB (4,651 words) - 14:50, 10 December 2011
  • ...source signal ''and'' [[Reactance (electronics)|reactance]] that is out of phase with a sinusoidal source signal. The total impedance (symbol: ''Z'') is the ...Gamma_S \, </math>, where ''Zs'' is the source impedance. The source of waves incident from the line are the reflections from the load end. If the sourc
    31 KB (4,821 words) - 14:50, 10 December 2011
  • ...the [[frequency]]. Other techniques, such as changing the [[phase (waves)|phase]] of the base signal also work.
    7 KB (902 words) - 14:50, 10 December 2011
  • ...s may also be fed into the VCO to cause [[frequency modulation]] (FM) or [[phase modulation]] (PM); a VCO with digital pulse output may similarly have its .../math> is the symbol for the time-domain waveform that is the VCO's output phase.
    11 KB (1,653 words) - 14:51, 10 December 2011
  • ...9382|John Carson/AT&T: "Method and Means for Signaling with High Frequency Waves" filed on December 1, 1915; granted on March 27, 1923}}</ref> for SSB modul The presence of two out-of-phase (quadrature) carrier waves is now evident.
    17 KB (2,658 words) - 14:51, 10 December 2011
  • ...such as [[amplitude modulation]] (AM), [[frequency modulation]] (FM), or [[phase modulation]] (PM) as well as a second oscillator that provides an [[audio f ...tude modulation|AM]], [[Frequency modulation|FM]], [[Phase modulation|ΦM (phase modulation)]] and [[pulse modulation]]. Another common feature is a built-i
    13 KB (1,767 words) - 14:51, 10 December 2011
  • ...osition, used for measuring [[differential gain]] and [[differential phase|phase]]. ...l (and component analog) vectorscopes, colorburst doesn't exist; hence the phase relationship between the colorburst signal and the chroma subcarrier is sim
    7 KB (1,016 words) - 14:51, 10 December 2011
  • ...ng, through a [[frequency mixer]], to convert the signal's [[phase (waves)|phase]] and [[amplitude]] to a DC&mdash;actually a time-varying low-frequency&mda The device is often used to measure [[phase shift]], even when the signals are large and of high [[signal-to-noise rati
    11 KB (1,574 words) - 14:51, 10 December 2011
  • ...but in conjunction with more advanced instrumentation the [[Phase (waves)|phase]] and [[waveform]] are available. Very high alternating currents (1000&nbsp ...currents flowing in the conductors and would depend on the [[phase (waves)|phase]] relationship of the currents. In particular if the clamp is closed around
    7 KB (1,070 words) - 14:51, 10 December 2011
  • ...}}'''Vector Network Analyzer''' (VNA)&nbsp;— measures both amplitude and phase properties A VNA may also be called a '''gain-phase meter''' or an '''Automatic Network Analyzer'''. An SNA is functionally ide
    12 KB (1,824 words) - 14:51, 10 December 2011
  • ...ility criterion|Barkhausen conditions]]: its loop gain must be one and the phase around the loop must be a multiple of 360 degrees. The linear oscillator th
    17 KB (2,498 words) - 14:52, 10 December 2011
  • ...stem that can move with sufficient speed to match the motion of the actual waves being measured. This was done with the development of the ''moving-coil osc ...aking it possible to measure properties of the waveform such as frequency, phase, rise time, and others, that would not otherwise be possible.<ref>{{Harvtxt
    19 KB (2,799 words) - 14:52, 10 December 2011
  • ...or ratio-related frequencies. This allows the generation of polyphase sine waves, I-Q constellations, or simulation of signals from geared mechanical system
    4 KB (608 words) - 14:52, 10 December 2011
  • ...ering allows the display of periodic signals such as sine waves and square waves, as well as nonperiodic signals such as single pulses, or pulses that don't ...rically-small ratio. They also indicated phase difference between two sine waves of the same frequency.
    56 KB (8,370 words) - 14:52, 10 December 2011