Carbon point

Definitions

  • Webster's Revised Unabridged Dictionary
    • Carbon point (Elec) a small cylinder or bit of gas carbon moved forward by clockwork so that, as it is burned away by the electric current, it shall constantly maintain its proper relation to the opposing point.
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Usage

In literature:

Edison greatly improved it by using soft carbon instead of a steel point.
"The History of the Telephone" by Herbert N. Casson
Cannot taste the least shock at B, yet between carbon points the spark is very vivid.
"Edison, His Life and Inventions" by Frank Lewis Dyer and Thomas Commerford Martin
The crayon is supported in an upright position by two little brackets of carbon, hollowed out so as to receive the pointed ends in shallow cups.
"Heroes of the Telegraph" by J. Munro
It is not necessary we should argue the point as to whether oxygen displaces carbonic acid in the tissues proper or the capillaries.
"Scientific American Supplement No. 275" by Various
There are two entirely distinct points from which the measurement of the atmospheric carbonic acid may be contemplated.
"Scientific American Supplement, No. 358, November 11, 1882" by Various
In this system the lower carbon is stationary, the luminous point descending in measure as the carbons wear away through combustion.
"Scientific American Supplement, No. 362, December 9, 1882" by Various
The point in which this process differs from the old and unsuccessful ones formerly tried, is in the expulsion of the carbon disulphide.
"Scientific American Supplement, No. 447, July 26, 1884" by Various
This spot diminished to an intense point, like an electric arc between carbons.
"The Cruise of the Dry Dock" by T. S. Stribling
Hence the light upon the screen may be regarded as the overlapping of innumerable images of the carbon-points.
"Six Lectures on Light" by John Tyndall
They long ago indicated points of resemblance between bisulphide of carbon and carbonic acid.
"Scientific American Supplement, Vol. XV., No. 388, June 9, 1883" by Various
This is due to various physical characteristics of carbon, the chief one being its extremely high melting-point.
"Artificial Light" by M. Luckiesh
In other words, "one hundred point carbon" is steel containing 1 per cent carbon.
"The Working of Steel" by Fred H. Colvin
In arc lamps fed with direct current the tip of the positive carbon has a bowl-shaped depression worn in it, while the negative tip is pointed.
"How it Works" by Archibald Williams
Sharpen the carbon to a pencil point, and adjust its position so that it projects from the holder about one inch.
"The Automobile Storage Battery" by O. A. Witte
Two of them ended in carbon points.
"Stories by American Authors, Volume 8" by Various
This material is carbon, and as its vaporizing point is (estimated at) over 3500 deg.
"Encyclopaedia Britannica, 11th Edition, Volume 9, Slice 2" by Various
This resistance increases much more rapidly than is represented by increase of distance between the carbon points.
"Scientific American, Vol. XXXIX.--No. 24. [New Series.], December 14, 1878" by Various
All these phenomena are parallel with those of 1.00% carbon steel at this same critical point Ar1.
"Encyclopaedia Britannica, 11th Edition, Volume 14, Slice 7" by Various
Just at this point Carboner received word where the stock was and orders to buy it.
"The Memoirs of an American Citizen" by Robert Herrick
At the same time the negative carbon gradually becomes pointed, and also wears away, though much less quickly than the positive.
"Encyclopaedia Britannica, 11th Edition, Volume 16, Slice 6" by Various
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In news:

Acidification caused by carbon emissions could bring some oceans to a tipping point.
Low-carbon steel (with about 20 points or less of carbon) also cannot be made to harden by simply heating and quenching, as higher carbon steels can.
A manufacturer of calcium carbonate challenged the patent, pointing out that particle films have been used on plants for years.
Dominique Simillox-Tohon points out the carbonate and brecciated limestone clasts.
Experts say the historian may be reading too much into the markings, and they stand by carbon-dating that points to the shroud being a medieval forgery.
He seemed rusty talking about the issue, even saying "carbons" at one point instead of "carbon".
Brayton Point emits more carbon dioxide than any power plant in New England.
Alonzo Perez checks for carbon monoxide after turning on the heater in a home on the 3200 block of Muddy Point.
A Franklin County man was found dead Tuesday night, and preliminary results point to carbon monoxide poisoning .
Blue Series point-of-entry filters for Cartridge Tank filtration vessels are high-performance coconut shell carbon block filters.
6-1/2 Carbon steel clip point blade, cast aluminum handle with simulated stag texturing, marked MURPHY COMBAT on the obverse side and U.S.A. on the reverse side.
Six points by Tianna Terry and four by Shawna Carbone sparked the Lady Panthers to a 10-8 lead after one quarter.
Verify Carbon Dioxide Purity at Delivery and Point-of-Use.
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In science:

Given the conclusions made in §2, we consider uniform rotation to be a reasonable starting point for when carbon first ignites.
The Internal Shear of Type Ia Supernova Progenitors During Accretion and Simmering
As pointed out earlier when the structure changes to three dimensional one, there is a significant change in the connectivity of two carbon atoms via zinc and oxygen.
Ferromagnetism in Carbon doped Zinc Oxide Systems
The most significant point is that the interaction is strenghtened by availability of multiple sites connecting two carbon atoms.
Ferromagnetism in Carbon doped Zinc Oxide Systems
EM excitation of frequency ω at an arbitrary point n = Rn = {RCN , ϕn , zn} associated with a carbon atom (representing a lattice site – Fig. 1) on the surface of the CN of radius RCN .
Strong exciton-plasmon coupling in semiconducting carbon nanotubes
In contrast to this, upon hydrogenation, only bare carbon atoms contribute to the DOS at Fermi energy, and they do so at many k points of the Brillouin zone.
A Systematic Study of Electronic Structure from Graphene to Graphane
The fundamental point is that adding carbon dioxide does not increase the outgoing longwave flux, so cannot cause a runaway greenhouse.
The Runaway Greenhouse: implications for future climate change, geoengineering and planetary atmospheres
Moreover we would be able to check whether or not the periodicity differs in the two hemisphere as already pointed out by Vecchio & Carbone (2008).
The Quasi-Biennial Periodicity (QBP) in velocity and intensity helioseismic observations
Therefore, given that our spectral fitting results discussed in Section 3.4 point to an early onset of star formation, we adopt the LMC carbon-to-silicate mass ratio of 0.33.
A multi-wavelength study of the Magellanic-type galaxy NGC 4449. I. Modelling the spectral energy distribution, the ionisation structure and the star formation history
However, if we make the reasonable assumption that there is as much flux from the K0 subgiant below the carbon edge as there is above, then by subtracting this contribution (∼50 counts/ksec) we find we can only fit the ROSAT data points for log g>8.0.
A search for hidden white dwarfs in the ROSAT EUV survey
We do not have OPAL occupation probabilities W (n) for oxygen at the test-point, but we do have them for the rather similar case of carbon at log(T ) = 6.0, log(ρ) = −2.0.
Up-dated opacities from the Opacity Project
Upper and lower points for depletions for carbon calculated with CO mass fraction 0.4 and 0.2 correspondingly.
Evolution of interstellar dust and stardust in the solar neighbourhood
To obtain the ratio of fluxes at the same energy we calculate the energy points obtained as a geometrical mean for the corresponding points for boron and carbon and calculate all fluxes for these energy points by interpolation of the spectrum of each nucleus.
Relative abundances of cosmic ray nuclei B-C-N-O in the energy region from 10 GeV/n to 300 GeV/n. Results from ATIC-2 (the science flight of ATIC)
Each point is binned in th ree k inematic var iab les for each nucleus. For the plots of the ν, Q2, and z dependences, the uppermost data is for carbon and the lowest is for lead.
Studies of Parton Propagation and Hadron Formation in the Space-Time Domain
Choi, T.-Y., Poulikakos, D., Tharian, J. & Sennhauser, U. Measurement of the Thermal Conductivity of Individual Carbon Nanotubes by the Four-Point Three-ω Method. Nano Lett 6, 1589-1593 (2006). specific heat 153.
Nanoscale Heat Transfer: from Computation to Experiment
From the hard X–rays point of view, matter is “neutral” as far as Carbon and heavier elements are not fully stripped.
Seyfert Galaxies and BeppoSAX
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