Gear (English Wikipedia)

Grant, George B. (1893). A Treatise on Gear Wheels (6th, illus. ed.). Lexington, MA; Philadelphia, PA: George B. Grant. p. 21.
Machinery's Handbook. New York: Industrial Press. 2012. pp. 2125. ISBN 978-0-8311-2900-2.

arxiv.org (Global: 69^th place; English: 59^th place)

MacKinnon, Angus (2002). "Quantum Gears: A Simple Mechanical System in the Quantum Regime". Nanotechnology. 13 (5): 678–681. arXiv:cond-mat/0205647. Bibcode:2002Nanot..13..678M. doi:10.1088/0957-4484/13/5/328. S2CID 14994774.

asminternational.org (Global: low place; English: low place)

dl.asminternational.org

Kuhn, Howard; Medlin, Dana, eds. (1 January 2000). Mechanical Testing and Evaluation. ASM International. doi:10.31399/asm.hb.v08.9781627081764. ISBN 978-1-62708-176-4.

bbc.co.uk (Global: 8^th place; English: 10^th place)

"Levers - Moments, levers and gears - AQA - GCSE Physics (Single Science) Revision - AQA - BBC Bitesize". Bbc.co.uk. 1 January 1970. Retrieved 16 March 2022.

books.google.com (Global: 3^rd place; English: 3^rd place)

Norton 2004, p. 462 Norton, Robert L. (2004), Design of Machinery (3rd ed.), McGraw-Hill Professional, ISBN 978-0-07-121496-4.
Irfan Habib, Economic History of Medieval India, 1200-1500, page 53, Pearson Education

bris.ac.uk (Global: 4,848^th place; English: 3,431^st place)

research-information.bris.ac.uk

Burrows, Malcolm; Sutton, Gregory (13 September 2013). "Interacting Gears Synchronize Propulsive Leg Movements in a Jumping Insect". Science. 341 (6151): 1254–1256. Bibcode:2013Sci...341.1254B. doi:10.1126/science.1240284. hdl:1983/69cf1502-217a-4dca-a0d3-f8b247794e92. PMID 24031019. S2CID 24640726.

britishmuseum.org (Global: 1,505^th place; English: 1,194^th place)

"vertical dial | British Museum". The British Museum. Retrieved 5 June 2022.

cambridge.org (Global: 305^th place; English: 264^th place)

dictionary.cambridge.org

Definition of "cog" in the Cambridge Dictionary Plus online. Accessed on 2024-07-29.

collinsdictionary.com (Global: 1,053^rd place; English: 701^st place)

Definition of "gearwheel" in the Collins English Dictionary online. Accessed on 2024-07-27.
Definition of "cog" in the Collins English Dictionary online. Accessed on 2024-07-29.

doi.org (Global: 2^nd place; English: 2^nd place)

Shuailong Zhang, Mohamed Elsayed, Ran Peng, Yujie Chen (2021): "Reconfigurable multi-component micromachines driven by optoelectronic tweezers". Nature Communications, volume 12, issue 1. doi:10.1038/s41467-021-25582-8
Lewis, M. J. T. (1993). "Gearing in the Ancient World". Endeavour. 17 (3): 110–115. doi:10.1016/0160-9327(93)90099-O.
Figliolini, Giorgio; Angeles, Jorge (1 July 2005). "Algorithms for Involute and Octoidal Bevel-Gear Generation". Journal of Mechanical Design. 127 (4): 664–672. doi:10.1115/1.1900147. ISSN 1050-0472.
Kuhn, Howard; Medlin, Dana, eds. (1 January 2000). Mechanical Testing and Evaluation. ASM International. doi:10.31399/asm.hb.v08.9781627081764. ISBN 978-1-62708-176-4.
MacKinnon, Angus (2002). "Quantum Gears: A Simple Mechanical System in the Quantum Regime". Nanotechnology. 13 (5): 678–681. arXiv:cond-mat/0205647. Bibcode:2002Nanot..13..678M. doi:10.1088/0957-4484/13/5/328. S2CID 14994774.
Burrows, Malcolm; Sutton, Gregory (13 September 2013). "Interacting Gears Synchronize Propulsive Leg Movements in a Jumping Insect". Science. 341 (6151): 1254–1256. Bibcode:2013Sci...341.1254B. doi:10.1126/science.1240284. hdl:1983/69cf1502-217a-4dca-a0d3-f8b247794e92. PMID 24031019. S2CID 24640726.

drgearbox.com (Global: low place; English: low place)

download.drgearbox.com

Radzevich, Stephen P. (2012). Dudley's Handbook of Practical Gear Design and Manufacture (PDF) (2nd ed.). Boca Raton, FL.: CRC Press, an imprint of Taylor & Francis Group. pp. 691, 702.^{[permanent dead link]}

etymonline.com (Global: 287^th place; English: 321^st place)

"gear (n.)". Etymonline. Retrieved 13 February 2020.
"cog (n.)". Etymonline. Retrieved 13 February 2020.

gearsolutions.com (Global: low place; English: low place)

Fred Eberle (August 2014). "Materials Matter". Gear Solutions: 22.

geartechnology.com (Global: low place; English: low place)

Matthew Jaster (2013): "MY GEAR is Bigger than YOUR GEAR: Industry Battles it Out for World's Largest Gear Title" Archived 31 December 2024 at the Wayback Machine. Online article from Gear Technology magazine. Archived on 2024-07-30 Archived 31 December 2024 at the Wayback Machine.

getpocket.com (Global: low place; English: 7,675^th place)

Stromberg, Joseph (12 September 2013), "This Insect Has The Only Mechanical Gears Ever Found in Nature", Smithsonian Magazine, retrieved 18 November 2020

gutenberg.org (Global: 489^th place; English: 377^th place)

Derek J. de Solla Price, On the Origin of Clockwork, Perpetual Motion Devices, and the Compass, p.84

handle.net (Global: 102^nd place; English: 76^th place)

hdl.handle.net

Burrows, Malcolm; Sutton, Gregory (13 September 2013). "Interacting Gears Synchronize Propulsive Leg Movements in a Jumping Insect". Science. 341 (6151): 1254–1256. Bibcode:2013Sci...341.1254B. doi:10.1126/science.1240284. hdl:1983/69cf1502-217a-4dca-a0d3-f8b247794e92. PMID 24031019. S2CID 24640726.

harvard.edu (Global: 18^th place; English: 17^th place)

ui.adsabs.harvard.edu

MacKinnon, Angus (2002). "Quantum Gears: A Simple Mechanical System in the Quantum Regime". Nanotechnology. 13 (5): 678–681. arXiv:cond-mat/0205647. Bibcode:2002Nanot..13..678M. doi:10.1088/0957-4484/13/5/328. S2CID 14994774.
Sanduk, M. I. (2007). "Does the Three Wave Hypothesis Imply Hidden Structure?" (PDF). Apeiron. 14 (2): 113–125. Bibcode:2007Apei...14..113S.
Burrows, Malcolm; Sutton, Gregory (13 September 2013). "Interacting Gears Synchronize Propulsive Leg Movements in a Jumping Insect". Science. 341 (6151): 1254–1256. Bibcode:2013Sci...341.1254B. doi:10.1126/science.1240284. hdl:1983/69cf1502-217a-4dca-a0d3-f8b247794e92. PMID 24031019. S2CID 24640726.

hellenicaworld.com (Global: low place; English: low place)

"Gears from Archimedes, Heron and Dionysius". www.hellenicaworld.com. Retrieved 21 November 2023.

howstuffworks.com (Global: 840^th place; English: 635^th place)

auto.howstuffworks.com

"Transmission Basics". HowStuffWorks. 27 April 2005.

science.howstuffworks.com

"How Gears Work". howstuffworks.com. 16 November 2000. Retrieved 20 September 2018.

iso.org (Global: 629^th place; English: 610^th place)

"ISO 6336-1:2019 Calculation of load capacity of spur and helical gears Part 1: Basic principles, introduction and general influence factors". ISO.

jstor.org (Global: 26^th place; English: 20^th place)

Halgren, John A.; Wulpi, D. J. (1957). "Laboratory Fatigue Testing of Gears". SAE Transactions. 65: 452–470. ISSN 0096-736X. JSTOR 44564381.

kyotoo.org (Global: low place; English: low place)

Schunck, Richard, "Minimizing gearbox noise inside and outside the box", Motion System Design.^{[permanent dead link]}

livescience.com (Global: 1,190^th place; English: 959^th place)

Owen Jarus (14 April 2022). "World's first computer, the Antikythera Mechanism, 'started up' in 178 B.C., scientists claim". livescience.com. Retrieved 5 June 2022.

merriam-webster.com (Global: 209^th place; English: 191^st place)

"Definition of "gear" sense (6a)". Merriam-Webster Dictionary. Retrieved 20 September 2018.
Definition of "gearwheel" in the Merriam-Webster dictionary online. Accessed on 2018-09-20.
Definition of "cog" in the Merriam-Webster Dictionary online. Accessed on 2024-07-29.

motionsystemdesign.com (Global: low place; English: low place)

Smith, Zan (2000), "Plastic gears are more reliable when engineers account for material properties and manufacturing processes during design.", Motion System Design, archived from the original on 14 July 2011, retrieved 7 January 2011.

nationalgeographic.com (Global: 344^th place; English: 296^th place)

news.nationalgeographic.com

Lee, Jane J. (12 September 2013), "Insects Use Gears in Hind Legs to Jump", National Geographic, archived from the original on 13 September 2013

nih.gov (Global: 4^th place; English: 4^th place)

pubmed.ncbi.nlm.nih.gov

Burrows, Malcolm; Sutton, Gregory (13 September 2013). "Interacting Gears Synchronize Propulsive Leg Movements in a Jumping Insect". Science. 341 (6151): 1254–1256. Bibcode:2013Sci...341.1254B. doi:10.1126/science.1240284. hdl:1983/69cf1502-217a-4dca-a0d3-f8b247794e92. PMID 24031019. S2CID 24640726.

nyu.edu (Global: 1,174^th place; English: 773^rd place)

dlib.nyu.edu

Freeth, Tony; Jones, Alexander (February 2012). "The Cosmos in the Antikythera Mechanism". ISAW Papers (4). Institute for the Study of the Ancient World – via New York University.

ox.ac.uk (Global: 613^th place; English: 456^th place)

mhs.ox.ac.uk

"Astrolabe By Muhammad Ibn Abi Bakr Al Isfahani".

cabinet.ox.ac.uk

"Giovanni Dondi's Astrarium, 1364 | cabinet". www.cabinet.ox.ac.uk. Retrieved 5 June 2022.

oxfordlearnersdictionaries.com (Global: 3,593^rd place; English: 3,273^rd place)

Definition of "gear" in the Oxford Learner's Dictionary online. Accessed on 2024-07-27.
Definition of "gearwheel" in the Oxford Learner's Dictionary online. Accessed on 2024-07-27.
Definition of "cog" in the Oxford Learner's Dictionary online. Accessed on 2024-07-29.

phys.org (Global: 1,283^rd place; English: 1,130^th place)

Functioning 'mechanical gears' seen in nature for the first time, PHYS.ORG, Cambridge University

popularmechanics.com (Global: 1,808^th place; English: 1,159^th place)

Herkewitz, William (12 September 2013), "The First Gear Discovered in Nature", Popular Mechanics

qtcgears.com (Global: low place; English: low place)

"Elements of metric gear technology" (PDF).

roymech.co.uk (Global: low place; English: low place)

Helical gears, archived from the original on 26 June 2009, retrieved 15 June 2009.

scientificamerican.com (Global: 896^th place; English: 674^th place)

Freeth, Tony (January 2022). "An Ancient Greek Astronomical Calculation Machine Reveals New Secrets". Scientific American. Retrieved 5 June 2022.

semanticscholar.org (Global: 11^th place; English: 8^th place)

api.semanticscholar.org

MacKinnon, Angus (2002). "Quantum Gears: A Simple Mechanical System in the Quantum Regime". Nanotechnology. 13 (5): 678–681. arXiv:cond-mat/0205647. Bibcode:2002Nanot..13..678M. doi:10.1088/0957-4484/13/5/328. S2CID 14994774.
Burrows, Malcolm; Sutton, Gregory (13 September 2013). "Interacting Gears Synchronize Propulsive Leg Movements in a Jumping Insect". Science. 341 (6151): 1254–1256. Bibcode:2013Sci...341.1254B. doi:10.1126/science.1240284. hdl:1983/69cf1502-217a-4dca-a0d3-f8b247794e92. PMID 24031019. S2CID 24640726.

thearchaeologist.org (Global: low place; English: low place)

"The Portable Byzantine Sundial Calendar: The Second Oldest Geared Mechanism in Existence". www.thearchaeologist.org. 8 December 2021. Retrieved 5 June 2022.

theverge.com (Global: 114^th place; English: 90^th place)

Robertson, Adi (12 September 2013). "The first-ever naturally occurring gears are found on an insect's legs". The Verge. Retrieved 14 September 2013.

tntech.edu (Global: low place; English: low place)

gemini.tntech.edu

Canfield, Stephen (1997), "Gear Types", Dynamics of Machinery, Tennessee Tech University, Department of Mechanical Engineering, ME 362 lecture notes, archived from the original on 29 August 2008.

vif.com (Global: low place; English: low place)

redshift.vif.com

Sanduk, M. I. (2007). "Does the Three Wave Hypothesis Imply Hidden Structure?" (PDF). Apeiron. 14 (2): 113–125. Bibcode:2007Apei...14..113S.

web.archive.org (Global: 1^st place; English: 1^st place)

Matthew Jaster (2013): "MY GEAR is Bigger than YOUR GEAR: Industry Battles it Out for World's Largest Gear Title" Archived 31 December 2024 at the Wayback Machine. Online article from Gear Technology magazine. Archived on 2024-07-30 Archived 31 December 2024 at the Wayback Machine.
"The Antikythera Mechanism Research Project: Why is it so important?". Archived from the original on 4 May 2012. Retrieved 10 January 2011. The Mechanism is thought to date from between 150 and 100 BC
Smith, Zan (2000), "Plastic gears are more reliable when engineers account for material properties and manufacturing processes during design.", Motion System Design, archived from the original on 14 July 2011, retrieved 7 January 2011.
Canfield, Stephen (1997), "Gear Types", Dynamics of Machinery, Tennessee Tech University, Department of Mechanical Engineering, ME 362 lecture notes, archived from the original on 29 August 2008.
Helical gears, archived from the original on 26 June 2009, retrieved 15 June 2009.
"W. M. Berg Gear Reference Guide" (PDF). Archived from the original (PDF) on 21 April 2015.
Lee, Jane J. (12 September 2013), "Insects Use Gears in Hind Legs to Jump", National Geographic, archived from the original on 13 September 2013

wiktionary.org (Global: 649^th place; English: 827^th place)

en.wiktionary.org

"Etymology 1: Cog (noun)". Wiktionary. Retrieved 29 July 2019.

wmberg.com (Global: low place; English: low place)

"W. M. Berg Gear Reference Guide" (PDF). Archived from the original (PDF) on 21 April 2015.

worldcat.org (Global: 5^th place; English: 5^th place)

search.worldcat.org

Figliolini, Giorgio; Angeles, Jorge (1 July 2005). "Algorithms for Involute and Octoidal Bevel-Gear Generation". Journal of Mechanical Design. 127 (4): 664–672. doi:10.1115/1.1900147. ISSN 1050-0472.
Halgren, John A.; Wulpi, D. J. (1957). "Laboratory Fatigue Testing of Gears". SAE Transactions. 65: 452–470. ISSN 0096-736X. JSTOR 44564381.

Gear (English Wikipedia)

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