Difference between revisions of "User talk:Marina"
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==Welcome!== |
==Welcome!== |
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| − | Hello, Marina!<br> |
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| − | Welcome at TORI.<br> |
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| − | I see, you already have successfully uploaded one file.<br> |
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| − | Keep doing!<br> |
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| − | You may ask your questions |
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| − | here,<br> |
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| − | at [[File talk:Lovelace-1.jpg]] <br> |
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| − | at [[Talk:Richard Lovelace]] <br> |
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| − | at [[User talk:T]]<br> |
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| − | or at the "discussion" of any other page best related to your question.<br> |
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Add four "tilde"s at the end; they become your signature. [[User:T|T]] ([[User talk:T|talk]]) 14:08, 21 December 2020 (JST) |
Add four "tilde"s at the end; they become your signature. [[User:T|T]] ([[User talk:T|talk]]) 14:08, 21 December 2020 (JST) |
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[[User:T|T]] ([[User talk:T|talk]]) 14:08, 21 December 2020 (JST) |
[[User:T|T]] ([[User talk:T|talk]]) 14:08, 21 December 2020 (JST) |
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== I am using this space for temporary files - modifications for wiki == |
== I am using this space for temporary files - modifications for wiki == |
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| + | == 26 February == |
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| − | In 1968 (10 November), Lovelace and his collaborators discovered period <math>P\approx 33</math> ms of the [[Crab Pulsar]].<ref name=”Lovelace1968”>[https://ui.adsabs.harvard.edu/abs/1968IAUC.2113....1L/abstract “Pulsar NP 0532 Near Crab Nebula”] R. V. E. Lovelace, J. M. Sutton, and H. D. Craft 1968, November, IAU Circ., No. 2113, #1 (1968) </ref><ref name="Lovell1973">[https://ui.adsabs.harvard.edu/abs/1973ozjb.book.....L/abstract "Out of the Zenith. Jodrell Bank 1957-1970"] Sir. Bernard Lovell, 1973, London: Oxford University Press, pp 1-255 (see page159).</ref> As a graduate student working at [[Arecibo Observatory]], Lovelace developed a version of the [[Fast Fourier transform]] program <ref name="Lovelace1969">[https://ui.adsabs.harvard.edu/abs/1969Natur.222..231L/abstract "Digital Search Methods for Pulsars"] 1969, R. V. E. Lovelace, J. M. Sutton, E. E. Salpeter, ''Nature'' 222 (5190), 231-233.</ref> |
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| − | <ref name="Heideman1984">[https://www.cis.rit.edu/class/simg716/Gauss_History_FFT.pdf "Gauss and the history of the fast Fourier transform"] Heideman, Michael T., Johnson, Don H., Burrus, Charles Sidney (1984). (PDF). IEEE ASSP Magazine. 1 (4): 14–21. CiteSeerX 10.1.1.309.181. doi:10.1109/MASSP.1984.1162257. S2CID 10032502.</ref> which |
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| + | Please, correct text in three places (numbered as 1, 2 and 3 below). |
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| − | was adapted to run on the Arecibo Observatory's [[CDC 3000 series|CDC 3200]] computer |
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| + | New text has more references, it is more precise and more neutral. Also, I removed information which cannot be confirmed directly by references. |
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| − | <ref name=”LovelaceTaylor2012”>[http://articles.adsabs.harvard.edu/pdf/2012Obs...132..186L "On the Discovery of the Period of the Crab Nebula Pulsar"] R.V.E. Lovelace & G. Leonard Tyler, 2012, The Observatory, V. 132, p. 186-188</ref>. This program helped to separate the periodic pulsar signal from the noise, and one night he discovered the period of the [[Crab pulsar]], which is approximately 33 ms. |
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| − | <ref name = "Comella1969">[https://ui.adsabs.harvard.edu/abs/1969Natur.221..453C/abstract "Crab nebula pulsar NP 0532"] 1969, J. M. Comella, H. D. Craft, R. V. E. Lovelace, J. M. Sutton, G. L. Tyler, ''Nature'' 221 (5179), 453-454.</ref><ref name=”Lang2013”>[https://books.google.com/books?id=Nq_1CAAAQBAJ&newbks=1&newbks_redir=0&printsec=frontcover&pg=PA1&hl=en#v=onepage&q&f=false "Astrophysical Formulae. Space, Time, Matter and Cosmology"] Kenneth R. Lang 2014, Publisher: Springer Berlin Heidelberg</ref> A few weeks earlier, observers from the [[National Radio Astronomy Observatory]] reported about two pulsating sources |
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| + | 1. Instead of the phrase: |
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| − | near the Crab Nebula, with no evident periodicities.<ref name="Howard1968">[https://ui.adsabs.harvard.edu/abs/1968IAUC.2110....2H/abstract "Pulsating radio sources near Crab Nebula"] Howard, W. E., Staelin, D. H., Reifenstein, E. C. 1968, IAU Circ., No. 2110, #2 (1968)</ref><ref name="Staelin1968">[https://ui.adsabs.harvard.edu/abs/1968Sci...162.1481S/abstract "Pulsating Radio Sources near the Crab Nebula"] Staelin, David H. and Reifenstein, Edward C., III, December 1968, Science, Volume 162, Issue 3861, pp. 1481-1483</ref>. On November 9 of 1968, Lovelace finished his computing program, and on the night from 9 to 10 of November he discovered that one of pulsars have a period of approximately 33 ms, which was the shortest period pulsar at that time.<ref name="Bondi1968"/>. Lovelace and collaborators found that one of pulsars (the NP 0532 - the Crab Pulsar) is located in the center of the Crab Nebula (with precision of 10') and it's period is 33.09 ms.<ref name = "Comella1969"/> |
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| + | : He also developed the theory of the stability of electron and ion rings,<ref name="Lovelace1975">[https://journals.aps.org/prl/abstract/10.1103/PhysRevLett.35.162 "Low-frequency stability of astron configurations"] R. V. E. Lovelace 1975, ''Physical Review Letters'' 35 (3), 162-164.</ref>{{Better source needed|date=January 2021}} which is used in current laboratory experiments on [[magnetic confinement fusion]] (for example at [[TAE Technologies]] in California).{{Citation needed|date=January 2021}} |
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| + | Please, put the phrase below which is more precise: |
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| + | ::Lovelace developed the theory of the stability of electron and ion rings,<ref name="Lovelace1975">[https://journals.aps.org/prl/abstract/10.1103/PhysRevLett.35.162 "Low-frequency stability of Astron configurations"] R. V. E. Lovelace 1975, ''Physical Review Letters'' 35 (3), 162-164</ref> which has been used in plasma fusion experiments at Cornell.<ref name="Humphries1980">[https://iopscience.iop.org/article/10.1088/0029-5515/20/12/006/pdf "Intense pulsed ion beams for fusion applications"] S. Humphries Jr. 1980, Nuclear Fusion 20, 1549-1612, see pp. 1560, 1572, 1589</ref> |
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| + | 2. Also, please substitute the old paragraph: |
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| + | :Lovelace proposed a new method of measuring magnetic fields,<ref name=TemnykhLovelace=2003>[https://patents.google.com/patent/US6639403B2/en "System and method for sensing magnetic fields based on movement"] Patent: United States Patent 6,639,403 A. Temnykh and R. V. E. Lovelace, October 28, 2003.</ref>{{Better source needed|date=January 2021}} developed a pioneering theory of intense [[ion beam]]s in pulsed diodes, which are currently used in laboratories,<ref name=SudanLovelace1973>[https://journals.aps.org/prl/abstract/10.1103/PhysRevLett.31.1174 "Generation of intense ion beams in pulsed diodes"]. R. N. Sudan and R. V. Lovelace 1973, ''Physical Review Letters'' 31 (19), 1174.</ref>{{Better source needed|date=January 2021}} and proposed the theory of magnetic insulation, which is used in laboratories including at [[Sandia National Laboratories]].<ref name=Lovelace1974>[https://aip.scitation.org/doi/abs/10.1063/1.1694876 "Theory of magnetic insulation"] R. V. Lovelace, E. Ott 1974, ''The Physics of Fluids'' 17 (6), 1263-1268.</ref>{{Better source needed|date=January 2021}} |
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| + | with a new one: |
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| + | ::Lovelace and collaborator (Prof. Sudan) developed a pioneering theory of intense [[ion beam]]s in pulsed diodes,<ref name="SudanLovelace1973">[https://journals.aps.org/prl/abstract/10.1103/PhysRevLett.31.1174 "Generation of intense ion beams in pulsed diodes"]. R. N. Sudan and R. V. Lovelace 1973, ''Physical Review Letters'' 31 (19), 1174</ref><ref name="Humphries1980"/> and proposed the theory of magnetic insulation (in collaboration with E. Ott),<ref name="Lovelace1974">[https://aip.scitation.org/doi/abs/10.1063/1.1694876 "Theory of magnetic insulation"] R. V. Lovelace, E. Ott 1974, ''The Physics of Fluids'' 17 (6), 1263-1268</ref> which are used in laboratories.<ref name="Humphries1980"/><ref name="Davidson2001">[https://books.google.com/bookshl=en&lr=&id=5s02DwAAQBAJ&oi=fnd&pg=PR7&ots=mwf-8814Gk&sig=7PY8ElDjWc0gMYXmnA1AizmVLLA#v=onepage&q&f=false Book: “Physics of Nonneutral Plasmas”], Ronald C. Davidson 2001, Imperial College Press and World Scientific Publishing Co. Pte. Ltd (see page 2 and Ref. 22 on page 8)</ref> |
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| + | 3. Please, substitute the phrase: |
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| + | :He invented a trapping mechanism of spin-polarized neutral gas, which has been experimentally demonstrated.<ref name="LovelaceEtAl1985">[https://ui.adsabs.harvard.edu/abs/1985Natur.318...30L/abstract "Magnetic confinement of a neutral gas"] R. V. E. Lovelace, C. Mehanian, T. J. Tommila, D. M. Lee 1985, ''Nature'' 318 (6041), 30-36.</ref><ref name=ThompsonEtAl1989>[https://www.osapublishing.org/josab/abstract.cfm?uri=josab-6-11-2227 "Storage rings for spin polarized hydrogen"] D. Thompson, R. V. E. Lovelace, D. M. Lee 1989, ''Journal of the Optical Society of America'', 611.</ref>{{Better source needed|date=January 2021}} |
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| + | with a new one: |
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| + | ::Lovelace and collaborators invented a trapping mechanism of spin-polarized neutral gas, which has been experimentally demonstrated.<ref name="LovelaceEtAl1985">[https://ui.adsabs.harvard.edu/abs/1985Natur.318...30L/abstract "Magnetic confinement of a neutral gas"] R. V. E. Lovelace, C. Mehanian, T. J. Tommila, D. M. Lee 1985, ''Nature'' 318 (6041), 30-36.</ref><ref name="Ketterle2002">[https://journals.aps.org/rmp/pdf/10.1103/RevModPhys.74.1131 “Nobel lecture: When atoms behave as waves: Bose-Einstein condensation and the atom laser”] W. Ketterle 2002, Reviews of Modern Physics, 74, 1131-1151 (see page 1134)</ref> |
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| + | [[User:Marina|Marina]] ([[User talk:Marina|talk]]) 03:44, 17 February 2021 (JST) |
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| − | In 1968 (10 November), Lovelace discovered period <math>P\approx 33</math> ms of the [[Crab Pulsar]].<ref name = "Comella1969" /><ref name="Lovell1973">[https://ui.adsabs.harvard.edu/abs/1973ozjb.book.....L/abstract A book:`` Out of the Zenith. Jodrell Bank 1957-1970”] Sir. Bernard Lovell, 1973, London: Oxford University Press, pp 1-255 (see page159). As a graduate student working at [[Arecibo Observatory]], Lovelace developed a [[Fast Fourier transform]] program.<ref name="Lovelace1969">[https://ui.adsabs.harvard.edu/abs/1969Natur.222..231L/abstract "Digital Search Methods for Pulsars"] 1969, R. V. E. Lovelace, J. M. Sutton, E. E. Salpeter, ''Nature'' 222 (5190), 231-233.</ref>The special code named Gallop in [[Fortran]] was adapted to run on the Arecibo Observatory's [[CDC 3000 series|CDC 3200]] computer, which had a memory of 32,000 words of 24 bit length; the code was integer-based, using half-words of 12 bits, and was able to do the fast Fourier transform of N=16,384 signal samples; the 8192 signal power values were printed out on a folded raster scan; the signal to noise ratio increases as N increases; this was the largest value of N that could be handled by the Arecibo computer.<ref name=”LovelaceTaylor2014”>[On the Discovery of the Period of the Crab Nebula Pulsar https://astro.cornell.edu/sites/people/files/CrabPeriodDiscovery1.pdf ] R.V.E. Lovelace & G. Leonard Tyler, 2012, The Observatory, V. 132, p. 186</ref>. This program helped to separate the periodic pulsar signal from the noise, and one night he discovered the period of the [[Crab pulsar]], which is approximately 33 ms (33.09 ms).<ref name = "Comella1969">[https://ui.adsabs.harvard.edu/abs/1969Natur.221..453C/abstract "Crab nebula pulsar NP 0532"] 1969, J. M. Comella, H. D. Craft, R. V. E. Lovelace, J. M. Sutton, G. L. Tyler, ''Nature'' 221 (5179), 453-454.</ref><new ref=”Lang2913”>[Astrophysical Formulae |
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| − | Space, Time, Matter and Cosmology] Kenneth R. Lang 2014, Publisher: Springer Berlin Heidelberg</ref> |
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| − | <ref name = "Comella1969"/> |
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==References== |
==References== |
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<references/> |
<references/> |
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Latest revision as of 11:42, 27 February 2021
Welcome!
Add four "tilde"s at the end; they become your signature. T (talk) 14:08, 21 December 2020 (JST) T (talk) 14:08, 21 December 2020 (JST)
I am using this space for temporary files - modifications for wiki
26 February
Please, correct text in three places (numbered as 1, 2 and 3 below). New text has more references, it is more precise and more neutral. Also, I removed information which cannot be confirmed directly by references.
1. Instead of the phrase:
- He also developed the theory of the stability of electron and ion rings,[1]Template:Better source needed which is used in current laboratory experiments on magnetic confinement fusion (for example at TAE Technologies in California).Template:Citation needed
Please, put the phrase below which is more precise:
2. Also, please substitute the old paragraph:
- Lovelace proposed a new method of measuring magnetic fields,[3]Template:Better source needed developed a pioneering theory of intense ion beams in pulsed diodes, which are currently used in laboratories,[4]Template:Better source needed and proposed the theory of magnetic insulation, which is used in laboratories including at Sandia National Laboratories.[5]Template:Better source needed
with a new one:
3. Please, substitute the phrase:
- He invented a trapping mechanism of spin-polarized neutral gas, which has been experimentally demonstrated.[7][8]Template:Better source needed
with a new one:
Marina (talk) 03:44, 17 February 2021 (JST)
References
- ↑ 1.0 1.1 "Low-frequency stability of astron configurations" R. V. E. Lovelace 1975, Physical Review Letters 35 (3), 162-164. Cite error: Invalid
<ref>tag; name "Lovelace1975" defined multiple times with different content - ↑ 2.0 2.1 2.2 "Intense pulsed ion beams for fusion applications" S. Humphries Jr. 1980, Nuclear Fusion 20, 1549-1612, see pp. 1560, 1572, 1589
- ↑ "System and method for sensing magnetic fields based on movement" Patent: United States Patent 6,639,403 A. Temnykh and R. V. E. Lovelace, October 28, 2003.
- ↑ 4.0 4.1 "Generation of intense ion beams in pulsed diodes". R. N. Sudan and R. V. Lovelace 1973, Physical Review Letters 31 (19), 1174. Cite error: Invalid
<ref>tag; name "SudanLovelace1973" defined multiple times with different content - ↑ 5.0 5.1 "Theory of magnetic insulation" R. V. Lovelace, E. Ott 1974, The Physics of Fluids 17 (6), 1263-1268. Cite error: Invalid
<ref>tag; name "Lovelace1974" defined multiple times with different content - ↑ Book: “Physics of Nonneutral Plasmas”, Ronald C. Davidson 2001, Imperial College Press and World Scientific Publishing Co. Pte. Ltd (see page 2 and Ref. 22 on page 8)
- ↑ 7.0 7.1 "Magnetic confinement of a neutral gas" R. V. E. Lovelace, C. Mehanian, T. J. Tommila, D. M. Lee 1985, Nature 318 (6041), 30-36. Cite error: Invalid
<ref>tag; name "LovelaceEtAl1985" defined multiple times with different content - ↑ "Storage rings for spin polarized hydrogen" D. Thompson, R. V. E. Lovelace, D. M. Lee 1989, Journal of the Optical Society of America, 611.
- ↑ “Nobel lecture: When atoms behave as waves: Bose-Einstein condensation and the atom laser” W. Ketterle 2002, Reviews of Modern Physics, 74, 1131-1151 (see page 1134)