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	Planck units - Wikipedia, the free encyclopedia
		In physics, Planck units are physical units of measurement originally proposed by Max Planck.
		The Planck units are often semi-humorously referred to by physicists as "God's units".
		At the "Planck scales" in length, time, density, or temperature, one must consider both the effects of quantum mechanics and general relativity.
	en.wikipedia.org /wiki/Planck_units (1321 words)

	Planck time - Wikipedia, the free encyclopedia
		The Planck time is the time it would take a photon travelling at the speed of light to cross a distance equal to the Planck length.
		The Planck length is the smallest amount of length with significance, as below this length quantum laws reign, meaning all measurements are nonsense.
		The speed of any object is limited by Einstein's laws of relativity, which state that nothing can travel faster than the speed of light in a vacuum (denoted c).
	en.wikipedia.org /wiki/Planck_time (284 words)

	Planck units -- Facts, Info, and Encyclopedia article (Site not responding. Last check: 2007-11-06)
		The Planck units are often semi-humorously referred to by physicists as " (The supernatural being conceived as the perfect and omnipotent and omniscient originator and ruler of the universe; the object of worship in monotheistic religions) God's units".
		The Planck impedance comes out to be the (Click link for more info and facts about characteristic impedance of free space) characteristic impedance of free space scaled down by meaning that, in terms of Planck units,.
		The relevant parts of Planck's 1899 paper leave some confusion as to how he managed to come up with the units of time, length, mass, temperature etc. which today we define using Dirac's Constant and motivate by references to quantum physics before things like and quantum physics were known.
	www.absoluteastronomy.com /encyclopedia/P/Pl/Planck_units.htm (2142 words)

	wiki/Planck scale Definition / wiki/Planck scale Research (Site not responding. Last check: 2007-11-06)
		Planck chargeIn physics, the Planck charge is the natural unit of electric charge, denoted by.
		The Planck impedance comes out to be the characteristic impedance of free spaceIn radio communications, characteristic impedance (acoustic impedance or sound impedance) of a uniform transmission line is the impedance of a circuit that, when connected to the output terminals of a line of arbitrary length, causes the line to appear infinitely long.
		Planck's Natural unitsIn physics, Planck units are physical units of measurement originally proposed by Max Planck.
	www.elresearch.com /wiki/Planck_scale (3207 words)

	[No title]
		The impedance used in the simulations is at the frequency of a significant hom in the main cavity.
		This figure is a snapshot of a bunch instability driven by an impedance corresponding to the first monopole hom in the main rf cavity.
		(In the simulation, the impedance of the mode is made artificially large to compensate for the fact that the code is a single bunch code.) The figure and the movie at least suggest is the possibility that the evolution of the bunch is chaotic and can provide loss of coherence among bunches in the fill.
	www.nsls.bnl.gov /organization/OpsEng/ElectricalSys/RFSys/Towne/VFPequation (2471 words)

	Jahrbuch-CD der MPG 2003 - The grain boundary impedance of
		The grain boundary impedance of random microstructures: numerical simulations and implications for the analysis of experimental data
		The grain boundary impedance of polycrystalline materials is usually analyzed in terms of a simplified microstructure composed of cubic-shaped grains.
		The impact of these calculations on the analysis of grain boundary impedances caused by space charge depletion layers is discussed.
	www.mpg.de /forschungsergebnisse/wissVeroeffentlichungen/archivListenJahrbuch/2002/29/publZIM149.html (196 words)

	Dictionary of Meaning www.mauspfeil.net (Site not responding. Last check: 2007-11-06)
		Planck units are what they say they are, but i am not entirely sure they are the most natural choice, and that's what i think they are there for.
		Planck units are not the only proposed set of natural units, but they are the only set that is not based on the properties of any particular particle, object, substance, or ''"thing"''.
		Planck had the right idea but I think Planck missed it a little (from the POV of E.T.) when he normalized G to one instead of normalizing 4piG. and Planck did not define a natural unit of charge (although Stoney did with the Elementary Charge).
	www.mauspfeil.net /Planck_units.html (9844 words)

	Planck units - Enpsychlopedia (Site not responding. Last check: 2007-11-06)
		It is a definition of unit charge that is a natural extension of how the other Planck units were defined and is referred to by physicists in some publications (http://www.arxiv.org/abs/hep-th/0208093).
		The Planck impedance comes out to be the characteristic impedance of free space ${Z_0} \ scaled down by 4 \pi \ meaning that, in terms of$ Planck units, ${Z_0 = 4 \pi Z_P} \ .$
		This factor comes from the fact that it is the Coulomb Force Constant $1/(4 \pi \epsilon_0) \ in Coulomb's law that is normalized to 1, as is done in the cgs system of units, rather than the permittivity of free space \epsilon_0 \ .$
	psychcentral.com /wiki/Planck_units (1696 words)

	Planck's Constant
		The photoemission of electrons from a metal surface is dependant on the energy of the incident radiation and not on its intensity.
		Because of the high input impedance of the amplifier, the charge continues to build until a stopping potential is attained.
		At this equilibrium value, the stopping potential can be read directly from the voltmeter V. Move the detector so that one color falls onto the opening of the mask and also (moving the cover barrel aside) make sure the light strikes the photodiode window.
	www.fas.harvard.edu /~scidemos/QuantumRelativity/PlancksConstant/PlancksConstant.html (987 words)

	Jahrbuch-CD der MPG 2003 - Proton transport through a pept
		The activity of the protein was demonstrated by impedance spectroscopy.
		Several effects previously determined from kinetic measurements of the enzyme reconstituted in liposomes such as saturation with respect to the substrate (ATP), inhibition by venturicidin, activation by a positive potential pulse and increase of the proton current as a function of increasingly negative potentials have been confirmed also for this tethered membrane system.
		Changes in the impedance spectra due to the addition of ATP were fully reversible.
	www.mpg.de /forschungsergebnisse/wissVeroeffentlichungen/archivListenJahrbuch/2002/69/publZIM11.html (244 words)

	Physical constant
		It can be contrasted with a mathematical constant, which is a fixed value that does not directly involve a physical measurement.
		There are many physical constants in science, some of the most famous being: Planck's constant, the gravitational constant, and Avogadro's number.
		Beginning with Paul Dirac in 1937, some scientists have speculated that physical constants may actually decrease in proportion to the age of the universe.
	www.brainyencyclopedia.com /encyclopedia/p/ph/physical_constant.html (383 words)

	Physical constant Information - TextSheet.com (Site not responding. Last check: 2007-11-06)
		It can be constrasted with a mathematical constant, which is a fixed number that does not directly involve a physical measurement.
		There are many physical constants in science, some of the most famous being: Planck's constant, the gravitational constant, and Avogadro's constant (better known as Avogadro's number).
		Constants can take many forms: the Planck length represents a fundamental physical distance; the speed of light in a vacuum signifies a maximum speed limit of the universe; and the fine-structure constant, which characterizes the interaction between electrons and photons, is dimensionless.
	www.rsk.soldat.sferahost.com /encyclopedia/p/ph/physical_constant.html (214 words)

	Electromagnetism - Enpsychlopedia (Site not responding. Last check: 2007-11-06)
		His theory of the photoelectric effect posited that light could exist in discrete particle-like quantities, which later came to be known as photons.
		In his work, Planck showed that hot objects emit electromagnetic radiation in discrete packets, which leads to a finite total energy emitted as fl body radiation.
		Planck's and Einstein's theories were progenitors of quantum mechanics, which, when formulated in 1925, necessitated the invention of a quantum theory of electromagnetism.
	www.grohol.com /wiki/Electromagnetism (863 words)

	MARSIS: Subsurface Sounding Radar/Altimeter (Site not responding. Last check: 2007-11-06)
		Secondary tasks are the measurement of the scattering properties of the surface of Mars at the long wavelengths required for penetration into the surface yet short enough to pass through the martian ionosphere.
		Measurement of the impedance versus frequency of the radar antenna used as a probe.
		In addition it is intended to use the radar antenna as an impedance probe to measure the local electron density and temperature in the AIM experiment.
	www.linmpi.mpg.de /english/projekte/mars-express/marsis (1285 words)

	AP-9370A Complete h/e System - PASCO scientific
		This inconsistency with the wave theory of light was not resolved until 1905 when Albert Einstein published a paper explaining his theory of the photoelectric effect.
		He reasoned that light must be thought of as a stream of particles (photons) that interact individually with the electrons of the metal and have an energy proportional to their frequency.
		where h is Planck's constant and v is the frequency of the incident light.
	store.pasco.com /pascostore/showdetl.cfm?&DID=9&CATID=21&Product_ID=1548&count=6&Pcount=16&DETAIL=1 (558 words)

	Deutsches Museum Bonn: Exponate: Relaxation methods (Site not responding. Last check: 2007-11-06)
		Impedance measurement bridge (1955) for prompt registration of reaction signals induced by a rapid change in electric field strength.
		The Max- Planck- Institute for physical Chemistry was founded in 1948.
		In 1972 it was combined with the Max- Planck-Institute for Spectroscopy and became the Max- Planck- Institute for biophysical Chemistry (Karl Friedrich Bonhoeffer Institute), Göttingen.
	www.deutsches-museum-bonn.de /exponate/relaxationsmethoden/relaxation_e.html (584 words)

	UH - News Releases - FIRST-EVER TEXAN/GERMAN SYMPOSIUM OPENS DOORS BETWEEN MAX PLANCK INSTITUTE FOR POLYMER RESEARCH ...
		HOUSTON, Oct. 14, 2004 – Collaborations between the Max Planck Institute for Polymer Research in Germany and the University of Houston are providing impetus for polymers research developments that range from improving display devices to genetic profiling.
		In the spirit of renowned physicist Max Planck, a 1919 Nobel Prize winner, who proved time and again that there were new things to be discovered in science, the symposium is hosted by the MPI-P, located on the campus of the Johannes Gutenberg University.
		It is an opportunity for Advincula, three doctoral students from his polymer group and a research associate staff member to present their research and to visit and meet with the directors of the MPI-P departments.
	www.uh.edu /admin/media/nr/2004/10oct/101404maxplanck.html (622 words)

	Planck Units articles and news from Start Learning Now (Site not responding. Last check: 2007-11-06)
		In physics, Planck units are physical unitphysical units of measurement originally proposed by Max Planck.
		They form a system of natural units because they are defined exclusively in terms of the following fundamental physical constants — the physical unitunits are natural because the numerical values of these five universal constants become 1 when expressed in units of this system.
		__TOC__ The Planck units are often semi-humorously referred to by physicists as "God's units".
	www.startlearningnow.com /Planck%20units.htm (1467 words)

	► » Air impedance (Site not responding. Last check: 2007-11-06)
		I want to measure the impedance or conductance of air.
		impedance in general, is expressed in ohms, and is theoretically
		Mathematically, the Zo of free space is equal to the square root of the
	www.science-chat.org /detail-2049742.html (430 words)

	Unified Theory: Freespace constants derived
		On most of the literature you may however find Planck units expressed in terms of Dirac's h bar, so do not be alarmed if you see different values from the ones derived here.
		To calculate the natural Impedance, we first put in the natural values for S and T, then multiply by the kg conversion factor k, and divide by the square of the Amp conversion factor j.
		This is no mathematical mistake, as we know that both the freespace impedance and the natural impedance have been experimentally confirmed under different conditions.
	www.blazelabs.com /f-u-const.asp (3123 words)

	HFI Project - Cardiff University, Astronomy Instrumentation Group
		The main objective of the Planck mission is to build on the pioneering work of COBE and fulfill this potential.
		True imaging of the CMB fluctuations with a precision approaching the limits set by astrophysics still remains to be accomplished, but can be achieved by an experiment which combines high angular resolution, high sensitivity, wide frequency coverage, and excellent rejection of systematic effects.
		Planck will not only yield CMB anisotropies, but also near-all-sky maps of all the major sources of microwave emission, opening a broad expanse of astrophysical topics to scrutiny.
	www.astro.cf.ac.uk /groups/instrumentation/projects/hfi/index.html (885 words)

	ia_synopses (Site not responding. Last check: 2007-11-06)
		The Planck distribution – experimental demonstration of the Planck spectrum.
		This experiment is intended to introduce the oscilloscope as a measuring instrument and demonstrates the action of high- and low-pass filters using a potential divider with a resistance and capacitative impedance.
		The magnitude and phase of impedance is studied as a function of frequency.
	www.phy.cam.ac.uk /teaching/ia_synopses.htm (1738 words)

	Abstract (Site not responding. Last check: 2007-11-06)
		The conversion mechanisms include (1) mirror impedance, (2) anomalous resistivity, (3) inertial resistivity, (4) weak double layers, (5) wave-particle resonances, (6) cavitons, and (7) wide-band turbulence.
		Whereas the mirror impedance (1) is an extraneous property, all the others are self- generated, either by intense electric currents ((2), (3), (4)), by beams (5) or non-linearly interacting waves ((6), (7)).
		The most impressive auroral displays are essentially created by the low-frequency energy carriers and the impedances (1) to (4) acting on the currents.
	www.plasma.kth.se /alp/alfven-conf2/abstracts/02-02.html (222 words)

	Planck Units and (slowly) changing Fine-Structure Constant
		anyway, about 2 decades ago i have been thinking along some of the same lines as Planck (although ignorant that he had been thinking about this 80 years previously) about a "Universal" set of physical units that would basically make the Universal Constants equal to unity if expressed in terms of those units.
		if we perceive reality in terms of the Planck Units and the electronic charge, e, then a change in the Fine-Structure Constant, alpha, would be noticed as a change in the Coulomb Force constant since F = c^2u0/(4pialpha) q^2/r^2 where q is in units of e.
		But, if OTOH, we perceived reality in terms of the Planck Units and the charge Q = e/sqrt(alpha), then a change in alpha would be noticed as a change in the charge of an electron.
	www.lns.cornell.edu /spr/2001-09/msg0035376.html (473 words)

	Max Planck Institute for Solar System Research
		A half-wave dipole has a large real component of the impedance as is needed for a wide bandwidth antenna.
		In the end two monopoles were placed about 1/10 of a wavelength over the surface on the lander body base plate.
		A monopole has a broad antenna diagram, and a relative large real component of the impedance.
	www.mps.mpg.de /en/projekte/rosetta/consert/technical_description.html (1329 words)

	FHI - Events
		A comparison was made between the corrosion behavior of the alloys and their constituent elements, especially copper, under the same conditions.
		In this respect, open-circuit potential measurements, electrochemical impedance spectroscopy (EIS) and polarization techniques were employed.
		The corrosion phenomena at the electrode surface were investigated by XPS (X-ray photoelectron spectroscopy) and SEM (scanning electron microscopy).
	www.fhi-berlin.mpg.de /events?id=838 (275 words)

	Electronics Cooling Technical Brief: temperature measurement using optical fibers (Site not responding. Last check: 2007-11-06)
		There is a myth in pyrometry, that by using two wavelengths the emissivity problem is solved.
		Although it is true that if emissivity is the same at both wavelengths or changes by the same rate, the ratio of intensities will yield temperature from the Planck equation.
		Planck, Annals of Physics, 4 (3), 553, (1901)
	www.electronics-cooling.com /Resources/EC_Articles/JAN97/jan97_tb.htm (984 words)

	Homepage von Gruppe Thielemann (Site not responding. Last check: 2007-11-06)
		Devices for data acquisition and impedance analysis are connected to the MEA chip via spring contacts.
		Impedance sensing on cancer cells focuses on the attachment and detachment processes of single tumour cells in order to test the response on substances that may prevent crucial mechanisms of tumour progression (Fig.
		Figure 3: Impedance data of an experiment monitoring the attachment process of human tumor cells to a gold microelectrode.
	www.mpip-mainz.mpg.de /~thielema/index.php?mode=screening (520 words)

	IEN - Electrical Metrology Department
		The relation of a macroscopic mass with the Planck constant through the quantum standards of voltage and impedance is obtained by means of a system that involves the harmonic motion of a moving electrode subject to electrical forces.
		The generalisation of a method for impedance comparison based on three-voltage measurement, previously developed for inductance measurements, is considered with the objective of referring impedances of any type in the range from 0.1 ohm to 10 kohm to a set of AC resistance standards.
		The expressions of the impedance parameters for the different types of comparisons are analysed and the optimal measurement conditions specified.
	www.ien.it /ar97/pub/me.htm (3585 words)

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