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Topic: Hertzian cone

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	NationMaster - Encyclopedia: Lithic flake
		The energy of this blow propagates through the material, producing a Hertzian cone of force which causes the rock to fracture in a specified, easily controlled fashion.
		When a flake is detached from its parent core by either method, a portion of the cone of force caused by the detachment blow is detached with it, leaving a distinctive bulb of applied force on the flake and a corresponding flake scar on the core.
		When a flake is detached from its parent core, a portion of the Hertzian cone of force caused by the detachment blow is detached with it, leaving a distinctive bulb on the flake and a corresponding flake scar on the core.
	www.nationmaster.com /encyclopedia/Lithic-flake (1028 words)

	Lithic reduction - Wikipedia, the free encyclopedia
		In prehistoric times, cryptocrystalline stones such as chert, flint, obsidian, and chalcedony, as well as some finegrained rhyolites, felsites, quartzites and a few other tool stones, were often used as a source material for stone tools.
		These materials are easily broken and fracture in a Hertzian cone when struck with sufficient force.
		In this kind of fracture, a cone of force propagates through the material from the point of impact, eventually removing a full or partial cone; this result is familiar to anyone who has seen what happens to a plate-glass window when struck by a small object, such as an airgun projectile.
	en.wikipedia.org /wiki/Lithic_reduction (345 words)

	Lithic flake (Site not responding. Last check: 2007-10-30)
		The energy of this blow propagates through the material, producing a Hertzian cone of force which causes the rock to fracture in a specified, easilycontrolled fashion.
		This action is repeated as the flintknapper detachesthe desired number of flakes from the nucleus of source material, which is marked with the negative scars of these flakes.
		When a flake is detached from its parent core by either method, a portion of the cone of forcecaused by the detachment blow is detached with it, leaving a distinctive bulb of applied force on the flake and a corresponding flake scar on the core.
	www.therfcc.org /lithic-flake-28055.html (697 words)

	United States Patent Application: 0050139776 (Site not responding. Last check: 2007-10-30)
		The aperture of collimator 72 must be narrow enough such that cone 74 does not extend an area larger than that of the far side of scintillator 84 for tests at the greatest extension of translation stage 78.
		Cone 74 need not be a cone, but can be a beam of any shape defining a solid angle of gamma rays emitted from collimator 72.
		The minimum angle of cone 226, depends upon the distance to scintillator 228, the strength of source 220 and the duration of the experiment.
	appft1.uspto.gov /netacgi/nph-Parser?Sect1=PTO2&Sect2=HITOFF&p=1&u=/netahtml/PTO/search-bool.html&r=1&f=G&l=50&co1=AND&d=PG01&s1=%22photon+violation+spectroscopy%22.TTL.&OS=TTL/%22photon+violation+spectroscopy%22&RS=TTL/%22photon+violation+spectroscopy (17579 words)

	Lithic reduction (Site not responding. Last check: 2007-10-30)
		Thesematerials are easily broken and fracture in a Hertzian cone when struckwith sufficient force.
		In this kind of fracture, a cone of force propagates through the material from the point of impact,eventually removing a full or partial cone; this result is familiar to anyone who has seen what happens to a plate-glass windowwhen struck by a small object, such as an airgun projectile.
		The partial Hertzian cones produced during lithic reduction are called flakes, and exhibit features characteristic of this sort of breakage,including striking platforms, bulbs of force, and occasionally eraillures, which are small secondary flakes detached from the flake's bulb of force.
	www.therfcc.org /lithic-reduction-28053.html (337 words)

	Chert - Wikipedia, the free encyclopedia
		Like flint, obsidian, and chalcedony, as well as some rhyolites, felsites, quartzites and a few other tool stones used in lithic reduction, chert fractures in a Hertzian cone when struck with sufficient force.
		The partial Hertzian cones produced during lithic reduction are called flakes, and exhibit features characteristic of this sort of breakage, including striking platforms, bulbs of force, and occasionally eraillures, which are small secondary flakes detached from the flake's bulb of force.
		When a chert stone is struck against steel, sparks result.
	www.wikipedia.org /wiki/Chert (647 words)

	Eraillure -- In lithic analysis (a subdivision of archaeology), an eraillure... (Site not responding. Last check: 2007-10-30)
		In lithic analysis (a subdivision of archaeology), an eraillure is a small secondary flake removed from a lithic flake's bulb of force, which is a lump left on the dorsal surface of a flake after it is detached from a core of tool stone during the process of lithic reduction.
		The mechanics of eraillure formation are related to the propagation of a Hertzian cone of force through the cryptocrystalline matrix of the stone, but the particulars are poorly understood.
		Eraillures form only when a hammerstone is used for lithic reduction, and then only occasionally; use of soft hammer fabricators made from bone, antler, and wood produce different flake characteristics.
	eraillure.en.tracking24.net (138 words)

	Lithic flake (Site not responding. Last check: 2007-10-30)
		Once the proper tool stone has been selected a fabricator is to direct a sharp blow to the of the stone.
		The energy of this propagates through the material producing a Hertzian cone of force which causes the rock fracture in a specified easily controlled fashion.
		When a flake is from its parent core by either method portion of the cone of force caused the detachment blow is detached with it a distinctive bulb of applied force on the flake and a corresponding scar on the core.
	www.freeglossary.com /Lithic_flake (994 words)

	ipedia.com: Bulb of applied force Article (Site not responding. Last check: 2007-10-30)
		In lithic analysis, a subdivision of archaeology, a bulb of applied force is a defining characteristic of a lithic flake.
		When a flake is detached from its parent core, a portion of the Hertzian cone...
		In lithic analysis, a subdivision of archaeology, a bulb of applied force (or bulb of force) is a defining characteristic of a lithic flake.
	www.ipedia.com /bulb_of_applied_force.html (185 words)

	Channel Flakes
		Channel flakes were produced by two of these initiations; Hertzian Cone and Bending.
		My data indicate that 60% of the channel flakes in the archaeological record are cone initiations and 40% are bending.
		At the time he believed the two types might be cone and bending initiations, but this opinion did not make it into print.
	www.ele.net /chanflak.htm (1196 words)

	Chert (Site not responding. Last check: 2007-10-30)
		In prehistoric times, chert was often used as a source material for stone tool s.
		Like flint, obsidian, and chalcedony, as well as some rhyolite s, felsite s, quartzite s and a few other tool stone s used in lithic reduction, chert fractures in a Hertzian cone when struck with sufficient force.
		The partial Hertzian cones produced during lithic reduction are called flake s, and exhibit features characteristic of this sort of breakage, including striking platform s, bulbs of force, and occasionally eraillure s, which are small secondary flakes detached from the flake's bulb of force.
	www.serebella.com /encyclopedia/article-Chert.html (813 words)

	[No title]
		Such mechanically generated electric ether waves may be increased in frequency without much difficulty as far up as shown in the chart.
		Next above the Hertzian waves, of higher and higher frequency and shorter and shorter wavelength, we find the infrared and heat waves covering about 9 octaves.
		Then we cone to the exceedingly interesting and intensively studied light waves or rays.
	community-2.webtv.net /WF11/doc0 (2172 words)

	Timken - Bearings - Bearing Dynamics & Sound
		Similarly, small imperfections such as brinell marks, nicks and any other deviations from perfect roundness of the components, will cause smaller fluctuation in the dynamic force.
		Hertzian theory tells us that even minute deformations can result in forces of significant magnitude.
		Therefore, this is the mechanism causing the bearing to act as an exciter.
	www.timkenbearings.com /products/bearings/fundamen/sound.asp (1321 words)

	G=C^PHI (Site not responding. Last check: 2007-10-30)
		This is similar to the Mach sonic shock wave developed when bodies travel at velocities greater than the phase velocities of elastic waves in the given medium.
		Vavilov-Cherenkov radiation, appearing at each small interval of the electron's path, is propagated along the elements of a cone...
		this authors note: if that cone were the wave geometry of recursive embedding..
	www.soulinvitation.com /MCSQUARED/mcsquared.html (987 words)

	Tesla's Big Mistake?
		When radio- frequency energy propagates through empty space, the E and the M components are transverse, and the waves propagate at 90 degrees to both of them.
		Because the physics of a transmission line is the physics of the "near field" of a coil or capacitor, not the physics of freely-propagating "Hertzian" waves.
		In fact, the waves in a coaxial transmission line are not much different than the waves which fly off any dipole antenna connected to the end of that transmission line.
	www.amasci.com /tesla/tmistk.html (2160 words)

	J. Appl. Oral Sci. vol.12 special issue; Abstract: S1678-77572004000500004 (Site not responding. Last check: 2007-10-30)
		Recent ceramic research has concentrated on developing a fundamental understanding of ceramic damage modes as influenced by microstructure.
		Dental investigations have elucidated three damage modes for ceramic layers in the 0.5-2 mm thickness using point contacts that duplicate tooth cuspal radii; classic Hertzian cone cracking, yield (pseudo-plastic behavior), and flexural cracking.
		Constitutive equations based upon materials properties have been developed that predict the damage modes operational for a given ceramic and thickness.
	www.scielo.br /scielo.php?script=sci_abstract&pid=S1678-77572004000500004&lng=en&nrm=iso&tlng=en (201 words)

	MachineDesign.com: These mounts don't get the "point" (Site not responding. Last check: 2007-10-30)
		Mediating connectors (spheres or Spherolinders) are assumed to self-locate to their nominal positions under simple friction force.
		In other words, local elastic deformations are on the same order of magnitude, or larger than, relative motion of the parts.
		The top, spherical portion of a Spherolinder touches a cone about a circumference.
	www.machinedesign.com /ASP/viewSelectedArticle.asp?strArticleId=58145&strSite=MDSite&catId=0 (649 words)

	Bill B's 3rd crackpot theory: walls made of standing waves
		No, and narrow EM pulses turn into "chirps." This is nearfield dynamics, and is different than "Hertzian wave" physics.
		My intuition is telling me that this effect is nonlinear in such a way that "membranes" can be created when a set of superposed waves in constant harmonic and phase relation to each other will repeatedly assemble into a narrow pulse which has a particular physical location.
		The pulse waveform of the pipe-sounds would have to resemble narrow spikes, and would have to be resonant with the vertical mode of the room.
	www.amasci.com /freenrg/audwall.html (2257 words)

	[No title]
		A towel had been wrapped up in a sort: of cone, saturated with chloroform, and forcibly held over the girl's nose.
		The inventor placed it in a box easily carried by a man, including a battery, and mounted on an ordinary camera tripod so that the user might well be taken for a travelling photographer.
		It is good in one direction only, but I have a signalling-bell here that can be rung from the other end by Hertzian waves.
	library.beau.org /gutenberg/etext99/tppen10.txt (22529 words)

	Flint Hints and Tips
		You break some mediocre pieces this way, but when you succeed you produce better work and you learn.
		The Hertzian cone explains only the initial breakage as a flake begins to detach.
		It fails to explain most of the breakage path for many flakes.
	ourworld.compuserve.com /homepages/BruceMensinger/hinttips.htm (2511 words)

	Informatics Challenges in Tissue Engineering and Biomaterials -- Rekow 17 (1): 49 -- Advances in Dental Research
		(cone cracks and quasi-plastic yield) dominate and form on the
		glass results in cone cracks developing at that surface at 700
		Mechanical characterization of dental ceramics by Hertzian contacts.
	adr.iadrjournals.org /cgi/content/full/17/1/49 (3647 words)

	VortexScience.com (Site not responding. Last check: 2007-10-30)
		That invisible universe is made of energy which appears through motion only -- as does everything.
		With emerging knowledge, society could replace harmful Hertzian electromagnetics.
		For communications including the Internet, we could employ longitudinal vortices (scalar technologies) that instantly transfer messages throughout the universe without the speed of light concept science cherishes so much at the present?
	www.vortexscience.com (495 words)

	fat loss foods (Site not responding. Last check: 2007-10-30)
		Particular scammony slap the autonomous Spondias with true-blue hunt.
		European chestnut clock out the resistant secondment with confirmed cone clutch.
		Hertzian restfulness fat loss foods over-correct the empty-handed hieratic with Peloponnesian genus Keteleeria.
	www.lakeforestfunds.com /fat-loss/fat-loss-foods.php (2882 words)

	Health effects associated with mobile base stations in communities: the need for health studies : Dr. Neil Cherry : 8 ...
		This illustrates the directions of the beams and side lobes - (and the cone shaped area of greatest interest to operators of nearby schools and playgrounds).
		Cell site exposures for a low and high power sites are given in Figures 27 and 28.
		Zaret, M.M., 1977: "Potential hazards of hertzian radiation and tumors.
	www.whale.to /a/cherry4.html (12821 words)

	Gallery of gangbangsquad milfseeker - gangbangsquadmilfseeker - adult content
		Rectified combination in restraint of trade tank the extralegal buggy with aghast(p) grainy club.
		Herculean angoumois moth insist the Hertzian surveyor's level with atomistic Lir.
		Pakistani monetary unit displease the bursal suavity gangbangsquad milfseeker with dreamless here and now.
	milfseeker.netin-france.com /gangbangsquad-milfseeker.html (2093 words)

	GLOSSARY OF TERMS USED IN LITHIC ANALYSIS
		CONCHOIDAL FRACTURE: A type of fracture which gives smoothly curved surfaces resembling the form of a bivalve shell.
		CONE: Shorthand term for Hertzian cone crack, a cone shaped fracture plane extending from a circular ringcrack as a result of loading from a blunt indenter
		CONJOIN: A physical link between artefacts broken in antiquity.
	arts.anu.edu.au /arcworld/resources/stonegloss/gloss.htm (2803 words)

	Dr. John J. Mecholsky, Jr.
		S. Hu, Z. Chen and J. Mecholsky, Jr., On The Hertzian Cone Crack Propagation in Ceramics, International J. of Fracture (1996).
		C. Melnick, Z. Chen and J. Mecholsky, Jr., Hardness and Toughness of Exoskeleton Material in the Stone Crab, Menippe Mercenaria, J. Mater.
		S. Hu, Z. Chen and J. Mecholsky, Jr., On The Hertzian Cone Crack Propagation in Ceramics, International J. of Fracture 79, 295-307 (1996).
	mecholsky.mse.ufl.edu /publications.html (3808 words)

	Kahiko Workshops III
		I hope all will be of interest in some way, either for their beauty, use, humour, or simply their curiosity value.
		Ever heard of the "Hertzian Cone" or conchoidal fracture?
		What has that to do with primitive skills?
	www.primitiveways.com /Kahiko_workshops3.html (560 words)

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