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Topic: Plancks constant

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Planck units

Physical constant

Natural units

Physical unit

Rydberg constant

Max Planck

Angular momentum

Uncertainty principle

Planck

Quantum mechanics

Electron volt

Quantum Hall effect

Angular frequency

Planck time

Hydrogen atom

	NationMaster - Encyclopedia: Planck pressure
		Planck units are only one system of natural units among other systems, but might be considered unique in that these units are not based on properties of any prototype, object, or particle but are based only on properties of free space.
		Planck's tenure at Münich was interrupted by illness in 1875.
		Planck's suggestion was that the heat energy radiated by a fl body be thought of as a stream of "energy bundles," the magnitude of which is a function of the wavelength of the radiation.
	www.nationmaster.com /encyclopedia/Planck-pressure (710 words)

	Kids.Net.Au - Encyclopedia > Plancks constant
		Planck's constant, denoted h, named after the physicist Max Planck, is a physical constant which appears in all quantum mechanical equations.
		Js Planck's constant can be seen as a conversion factor between frequency and energy, especially for photons.
		The constant $\hbar$ is sometimes referred to as Dirac's constant after Paul Dirac.
	www.kids.net.au /encyclopedia-wiki/pl/Plancks_constant (164 words)

	Planck's constant - Facts, Information, and Encyclopedia Reference article
		Planck's constant (denoted h) is a physical constant that is used to describe the sizes of quanta.
		Planck's constant and the reduced Planck's constant are used to describe quantization, a phenomenon occurring in microscopic particles such as electrons and photons in which certain physical properties occur in fixed amounts rather than assuming a continuous range of possible values.
		Planck's constant has units of energy (joules or J) multiplied by time (seconds or s), which are the units of action (joule seconds or J·s).
	www.startsurfing.com /encyclopedia/p/l/a/Plancks_constant.html (513 words)

	The discon model of matter - page 2
		It results from a combination of the photons vertical motion away from the atom at the speed of light and its horizontal motion caused by the constant mutual attraction of its 2 discons.
		The amplitude of the wave is equal to half the electrons orbital radius at the moment the photon was emitted from the atom.
		The photon has a vertical motion at the speed of light and a horizontal motion caused by the constant mutual attraction of the 2 discons forming the photon.
	www.disconmodel.co.uk /page_2.html (776 words)

	Plancks constant - Sciences Constant (Site not responding. Last check: )
		Usually the term constant is used in connection with mathematical functions of one or more variable parameters.
		Constants are by convention usually denoted by lower-case letters from the beginning of the English alphabet, such as a, b, and c.
		A special case of this may be found in physics, chemistry, and related fields, where certain features of the natural world that are described by numbers are found to have the same value at all times and places.
	www.happy2news.info /education/plancks-constant.htm (283 words)

	Brainboost - why is the speed of light a constant
		Is the reduced Plancks constant, is the rest mass of the electron, is the elementary charge, is the speed of light in vacuum, and is the permittivity of free space..
		There are many physical constants in science, some of the most famous being the reduced Planck constant, the gravitational constant, the speed of light, the electric constant, and the elementary charge.
		Is the reduced Planck constant, is the electron rest mass is the Bohr radius is the speed of light in a vacuum is the fine structure constant..
	www.brainboost.com /search.asp?Q=why+is+the+speed+of+light+a+constant&lfmq=1 (476 words)

	Why arent Plancks constant's relative?
		PLanck's length is calculated as an algebraic expression in three constants: Newton's constant of gravity, the speed of light, and Planck's constant.
		Planck's constant describes the scale at which certain physical properties can only occur in discrete [quantized] amounts instead of a smooth continuous range of possible values.
		Starting with the Planck constant, and a relatively small number of other fundamental constants, it was later found that all other physical properties of particles could be expressed in terms of the relationships between these constants.
	www.physicsforums.com /showthread.php?p=410477 (2047 words)

	Re: Is Planks constant a function of Hubbles constant
		After some deliberation my simple answer is no, plancks constant and the speed of light is not a function of the Hubble Constant as far as we know at the moment.
		The planck constant is defined from the constant of proportionality from the Planck-Einstein Equation
		Where E is the energy of a wave of wavelength ν and h is plancks constant, 6.6262x10-34 Js and n=1,2,3,4,5,6....
	www.madsci.org /posts/archives/may97/862585310.Ph.r.html (1205 words)

	Plancks Constant: Free Encyclopedia Articles at Questia.com Online Library
		Figure 1 shows typical forms of constant- resistance networks and the form taken...equalizers are generally designed to have a constant loss over the band of frequencies transmitted...an ideal gas p V/T is a universal constant and the ideal gas equation of state...
		A constant hour was not established until the development...leaked through a small aperture at a constant rate.
		Because the value of Plancks constant is extremely small (6.62 O 10 27 erg sec.), the discrete nature of light energy is not evident...
	www.questia.com /library/encyclopedia/101265026 (1266 words)

	More on Planck's Constant
		Here is free textual content related to Planck's Constant to utilize on your web site in accordance wi th the GNU license.
		Planck's constant has units of energy multiplied by time, which are the units of action.
		Planck's constant is used to describe quantization, a phenomenon occurring in microscopic particles such as electrons and photons in which certain physical properties occur in fixed amounts rather than assuming a continuous range of possible values.
	www.artilifes.com /plancks-constant.htm (563 words)

	Formula Sheet
		Where G is the gravitation constant, m is the mass of one body and d the distance.
		G is the gravitational constant, M the mass and d the distance.
		Where G is the gravitational constant, M is the mass and c the speed of light.
	library.thinkquest.org /C0114565/content.php?id=341 (235 words)

	A cosmological model, interprets the big bang as a bounce due to reduced gravity strength
		In this model it is also valid to regard the universe as static (in scale-size, although the matter would be in motion and there may be an expansion or contraction of the matter density).
		For a rescaling universe which also appears static, it must be that all physical quantities and constants rescale too.
		The size of atoms depends on Plancks constant, so for atoms to expand it is necessary that Plancks constant rescales too.
	www.gravity.uk.com /cosmological_model.html (378 words)

	NMR Spectroscopy - Theory
		The spacings between the peaks of the methyl triplet are equal to the spacings between the peaks of the methylene quartet.
		This spacing is measured in Hertz and is called the coupling constant, J.
		The coupling constant is not dependant on the applied field.
	www.shu.ac.uk /schools/sci/chem/tutorials/molspec/nmr1.htm (1675 words)

	(Q-4) Planck's constant: Radiation from Hot Objects
		Max Planck suggested, as a guess, that a constant h existed such that the oscillation of frequency ν; in the solid body could take place only if it had available for itself an amount hν of energy.
		It was through Planck's explanation of the fl body spectrum, a somewhat peripheral area of the theory of heat, that physics received its first indication of "quanta" of light with energy hν.
		Max Planck himself was awarded the 1918 Nobel Prize for his discovery, but he also suffered personal blows: his wife died in 1906, one son was lost in World War I while another was executed by Nazi Germany for participating in a plot to assassinate Hitler.
	www.phy6.org /stargaze/Q4.htm (1776 words)

	Redshift : Due to a changing of Plancks constant - Bad Astronomy and Universe Today Forum
		If Plancks constant changes with time, as the photon travels from a distant star to earth, then a redshift would result from conservation of energy.
		In the rescaling, all physical constants rescale, according to their length dimensions, in such a way that the individual variation of each constant is not detectable.
		The Hubble constant is the measured rate of change and a non-zero Hubble constant indicates a dynamic, non-static universe.
	www.bautforum.com /showthread.php?t=34968 (2938 words)

	Planck\'s constant [Archive] - Advanced Physics Forums
		In the notes to the chapter he gives the value as 1.05 x 10^-27 gram.cm/s this is indeed the value for h bar, leaving aside his choice of strange values (don\'t we all use Joule.second these days, i.e.
		I noticed that one when i was reading it, it is a bit strange., then again h-bar is as prevalent in quantum mechanice as h is so mayb its just some obscure convention.
		Physics is presice but he does state that what he\'s calling plancks constant is actualy h-bar so he\'s fairly clear on it.
	www.advancedphysics.org /forum/archive/index.php/t-1276.html (237 words)

	Units and Constants
		Fundamental constants are some numbers with units that cannot (yet) be calculated from some physical theory, but must be measured.
		Mechanics (including gravitation) needs the gravity constant G, quantum theory has Plancks constant h, statistical thermodynamics introduces Boltzmanns constant k, the special theory of relativity (or Maxwells theory of electromagnetism which is really part of the relativity theory) needs the speed of light c.
		Boltzmann's constant k, for example, is more fundamental than the "fundamental" gas constant R, because it relates its number to a fundamental unit of matter (1 particle) and not to an arbitrary one like 1 Mol.
	www.tf.uni-kiel.de /matwis/amat/mw1_ge/kap_2/basics/b2_1_13.html (1196 words)

	Physics and the Bible: When the Universe Became Fuzzy - Lambert Dolphin
		Building on the work of Wein, Stefan, and Boltzmann, Planck's formula showed that the intensity of radiated light from a heated object involved quantum jumps within the atoms of the surface-and these were statistically distributed.
		When one brings quantum mechanics into attempts to unify the laws of physics, Planck's constant is found to define the "fuzziness," or the "grain size" of the universe.
		We began this discussion by mentioning the relationship between Planck's constant, c, and the wavelength (or frequency) of photons emitted from orbital transitions within the atom: E = hf = hc/
	www.khouse.org /articles/1997/23/print (2132 words)

	Plancks constant - Wikipedia
		In physics, Planck's constant, named after the physicist Max Planck, is a fundamental value equal to:
		is used, where π is Archimedes' constant, the ratio of the circumference of a circle to its diameter.
		The planck length and planck time are used as the fundamental units in the system of Planck units.
	nostalgia.wikipedia.org /wiki/Plancks_constant (203 words)

	Clock Comparison Yields Clues to 'Constant' Change
		If fundamental constants are changing, the present-day rates of change are too small to be measured using conventional methods.
		Since the fine structure constant is defined in terms of the electric charge, Plancks constant, permittivity of free space and pi, then if it changes, one or more of those quantities must be changing, so no, they aren't absolute just because they seem to be.
		Now it's still close because H0, the Hubble constant, is close to 1/t0 and in certain geometric units, the critical density of the universe is close to H0, and by measurement ρΛ is between 0.7 and 0.78 times this critical density, but it's nothing mystical.
	www.physorg.com /news90776642.html (974 words)

	A Solution for the Solar Neutrino Problem
		However, now the increase in energy is manifested as an increase in the unitary energy per wave (in other words Plancks constant) rather than an increase in the frequency of the radiation which now remains constant.
		Therefore the Doppler shift evidence will support both points of view since if Plancks constant is assumed fixed and the speed of light were assumed constant any increase in the wavelength would be viewed as an apparent increase in frequency.
		Note that for the purposes of the previous discussion the definition of the speed of light in a vacuum as a constant has been ignored.
	www.btinternet.com /~david.reynolds1/neutrino (1495 words)

	P2-01.HTML (Site not responding. Last check: )
		A plot can be made of the stopping potential as a function of frequency, from which the value of Planck's constant h can be determined: h=e(V2-V1)/(f2-f1), where e is the charge on the electron, V is the stopping potential and f is the frequency of the incident light.
		Measuring Planck's Constant: Experimental setup used at NIST to make a recent measurement of Planck's constant.
		Planck constant, from the NIST Reference on Constants, Units, and Uncertainty.
	www.physics.umd.edu /lecdem/services/demos/demosp2/p2-01.htm (417 words)

	[No title]
		Attached is a mathematical derivation that indicates Planck's Constant
		is the same and constant for all mattercules.
		Energy "E" is associated with frequency "f" by h Planck's constant
	www.mathforum.org /kb/plaintext.jspa?messageID=123570 (657 words)

	Universal "Constants"
		The "earth" was a typo, and as shown in the definition for t0, which was correctly labeled as age of universe.
		The "constants" in the equation (Gravitational and Cosmological) would have to change for the age of the universe to continue to change.
		From my calculations if the Gravational constant was held constant, the Cosmological "constant" would have to decrease by about 14% over the next 1 billion years.
	lofi.forum.physorg.com /Universal-"Constants"_12713.html (686 words)

	The Shortest Distance Takes The Longest Time (Site not responding. Last check: )
		The analog of a line in space is for space-time a motion at uniform velocity in a constant direction.
		The curve of shortest distance in space corresponds in space-time not to the path of shortest time, but to the one of longest time, because of the funny things that happen to signs of the terms in relativity.
		That is, there is no real amount of time change or space increase between Planck's constant and zero.
	www.tvbn.com /Science/RichardFeynman.shtml (1214 words)

	relationship help: ….. - Help.com
		Eddington identifies three types of knowledge: (1) structural, with the approximate meaning of mathematical, but in Eddington’s thinking the structure appears to be almost identified with Group theory, (2) direct awareness (approximately sensation) and (3) sympathetic understanding, which he argues is essential because a remembered sensation is sympathetic understanding of a past sensation.
		He was so inspired by the intensity of the 136 integer that he “created ” the matrix logic that led to his wrong interpretation of the 136 integer as it pertains to the fine-structure constant.
		The fine-structure constant had a 10% accuracy confidence in 1938, Eddington’s number 136 being one of many interpretations of what the fine-structure meant at that time.
	help.com /post/17301- (1950 words)

	Paradoxes Resolved, Origins Illuminated
		[/quote] Dear LB - Plancks constant could be changing in such a way that the variation isn't noticeable (apart from the redshift) so it appears constant.
		Planck's Constant is far more complex and tricky than you guys know because the time element is changable and not at all constant.
		The way the time element is treated by everyone is a clear mistake to me and if you use Planck's Constant you should at least consider how time effects the result.
	www.metaresearch.org /msgboard/post.asp?method=ReplyQuote&REPLY_ID=11009&TOPIC_ID=726&FORUM_ID=2 (2738 words)

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