Engine (English Wikipedia)

Analysis of information sources in references of the Wikipedia article "Engine" in English language version.

Last modified: 23:50:06, 19 August 2026 (UTC)

Ref.Un. Ref.Website

Global rank English rank

2828web.archive.org

1^st place

77doi.org

2^nd place

55worldcat.org

4^th place

33nasa.gov

12^th place

73^rd place

22reference.com

1,491^st place

1,468^th place

22archive-it.org

1,292^nd place

869^th place

22worldwidewords.org

8,811^th place

5,849^th place

22books.google.com

3^rd place

22adsabs.harvard.edu

14^th place

9^th place

22energy.gov

2,792^nd place

1,703^rd place

11collinsdictionary.com

1,831^st place

1,216^th place

11archive.org

6^th place

11oed.com

743^rd place

419^th place

11history-science-technology.com

low place

11rochester.edu

2,816^th place

1,888^th place

11sciencemuseum.org.uk

low place

8,101^st place

11barsantiematteucci.it

low place

11autodesk.com

low place

8,250^th place

11mercedes-benz.com

8,814^th place

8,175^th place

11volkswagen-newsroom.com

low place

11si.edu

256^th place

197^th place

11motor.com

low place

11wartsila.com

low place

11mdpi.com

1,887^th place

3,593^rd place

11britannica.com

37^th place

64^th place

11answers.com

2,156^th place

1,933^rd place

11about.com

419^th place

335^th place

11infoplease.com

3,121^st place

3,035^th place

11merriam-webster.com

425^th place

373^rd place

11sciepub.com

low place

11nss.org

low place

11iea.org

3,027^th place

2,709^th place

11epa.gov

961^st place

595^th place

11acs.org

865^th place

887^th place

11scribd.com

467^th place

428^th place

11worldscientific.com

low place

6,878^th place

11sciencedirect.com

137^th place

146^th place

11aceee.org

low place

11eia.gov

2,641^st place

1,841^st place

11thecollector.com

low place

11howstuffworks.com

1,354^th place

958^th place

11cmu.edu

2,125^th place

1,347^th place

11libretexts.org

4,683^rd place

3,565^th place

11semanticscholar.org

15^th place

8^th place

about.com (Global: 419^th place; English: 335^th place)

inventors.about.com

"Columbia encyclopedia: Internal combustion engine". Inventors.about.com. Retrieved 2011-05-09.{{cite web}}: CS1 maint: deprecated archival service (link)

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

Anonymous (2010-06-22). "Motors". American Council for an Energy-Efficient Economy. Archived from the original on 2012-10-23.

acs.org (Global: 865^th place; English: 887^th place)

pubs.acs.org

Girolami, Gregory S. (2020). "A Brief History of Thermodynamics, as Illustrated by Books and People". Journal of Chemical & Engineering Data. 65 (2): 298–311. doi:10.1021/acs.jced.9b00515. Archived from the original on 2018-06-03. Retrieved 2026-07-22.

adsabs.harvard.edu (Global: 14^th place; English: 9^th place)

ui.adsabs.harvard.edu

Shu, Yao-Gen; Ou-Yang, Zhong-Can (June 2022). "Biomotor is not a Heat Engine". Biophysical Reviews and Letters. 17 (2): 43–50. Bibcode:2022BpRL...17...43S. doi:10.1142/S1793048022310014. ISSN 1793-0480. Archived from the original on 2022-08-17. Retrieved 2026-07-22.
Hogan, C. Michael (September 1973). "Analysis of Highway Noise". Journal of Water, Air, and Soil Pollution. 2 (3): 387–92. Bibcode:1973WASP....2..387H. doi:10.1007/BF00159677. ISSN 0049-6979. S2CID 109914430.

answers.com (Global: 2,156^th place; English: 1,933^rd place)

"Internal combustion engine". Answers.com. Archived from the original on 2011-06-28. Retrieved 2011-05-09.

archive-it.org (Global: 1,292^nd place; English: 869^th place)

wayback.archive-it.org

"Motor". Dictionary.reference.com. Archived from the original on 2008-04-07. Retrieved 2011-05-09. a person or thing that imparts motion, esp. a contrivance, as a steam engine, that receives and modifies energy from some source in order to use it in driving machinery.
Dictionary.com: (World heritage) Archived 2008-04-07 at Archive-It "3. any device that converts another form of energy into mechanical energy so as to produce motion"

archive.org (Global: 6^th place; English: 6^th place)

Onions, Charles Talbut, ed. (1966). The Oxford Dictionary of English Etymology. Oxford University Press (published 1966-12-31). p. 592. ISBN 978-0198611127.

autodesk.com (Global: low place; English: 8,250^th place)

Heventhal, Bryce (2018-09-27). "The Boom of Motorization: How Karl and Bertha Benz Transformed the Automotive Industry Forever". US: AutoDesk. Retrieved 2026-04-18.

barsantiematteucci.it (Global: low place; English: low place)

"La documentazione essenziale per l'attribuzione della scoperta". Archived from the original on 2017-02-25. Retrieved 2014-02-24. A later request was presented to the Patent Office of the Reign of Piedmont, under No. 700 of Volume VII of that Office. The text of this patent request is not available, only a photo of the table containing a drawing of the engine. This may have been either a new patent or an extension of a patent granted three days earlier, on 30 December 1857, at Turin.

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

Nag, P.K. (2002). Power plant engineering. Tata McGraw-Hill. p. 432. ISBN 0-07-043599-5.
Victor Albert Walter Hillier, Peter Coombes – Hillier's Fundamentals of Motor Vehicle Technology, Book 1 Nelson Thornes, 2004 ISBN 0-7487-8082-3 [Retrieved 2016-06-16]

britannica.com (Global: 37^th place; English: 64^th place)

Proctor, Charles Lafayette II. "Internal Combustion engines". Encyclopædia Britannica Online. Archived from the original on 2011-06-29. Retrieved 2011-05-09.

cmu.edu (Global: 2,125^th place; English: 1,347^th place)

opi.cs.cmu.edu

"InfoType: engine speed". opi.cs.cmu.edu. Retrieved 2026-07-22.

collinsdictionary.com (Global: 1,831^st place; English: 1,216^th place)

"Engine". Collins English Dictionary. Archived from the original on 2012-08-29. Retrieved 2012-09-03.

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

Caton, Jerald A. (2018-05-22). "The Thermodynamics of Internal Combustion Engines: Examples of Insights". Inventions. 3 (2). US. doi:10.3390/invention (inactive 2026-07-24). ISSN 2411-5134. Archived from the original on 2025-12-17. Retrieved 2026-07-22.{{cite journal}}: CS1 maint: DOI inactive as of July 2026 (link)
Maamri, Rachid; Dyatshenko, Wassily Georgivitsh; Varonkov, Alexandre Ivanovitsh; Linkov, Oleg Uryevitsh; Nikitenko, Yvan Nikolaevitsh; Dubé, Yves; Toubal, Lotfi; Kodjo, Agbossou (2013-01-23). "Development of External Combustion Engine". American Journal of Vehicle Design. 1 (2): 25–29. doi:10.12691/ajvd-1-2-2 (inactive 2026-07-24). Archived from the original on 2018-02-24. Retrieved 2026-07-22.{{cite journal}}: CS1 maint: DOI inactive as of July 2026 (link)
Girolami, Gregory S. (2020-02-13). "A Brief History of Thermodynamics, As Illustrated by Books and People". Journal of Chemical & Engineering Data. 65 (2): 298–311. doi:10.1021/acs.jced.9b00515. ISSN 0021-9568.
Girolami, Gregory S. (2020). "A Brief History of Thermodynamics, as Illustrated by Books and People". Journal of Chemical & Engineering Data. 65 (2): 298–311. doi:10.1021/acs.jced.9b00515. Archived from the original on 2018-06-03. Retrieved 2026-07-22.
Bataineh, Khaled M. (2018). "Numerical thermodynamic model of alpha-type Stirling engine". Case Studies in Thermal Engineering. 12: 104–116. doi:10.1016/j.csite.2018.03.010. ISSN 2214-157X.
Shu, Yao-Gen; Ou-Yang, Zhong-Can (June 2022). "Biomotor is not a Heat Engine". Biophysical Reviews and Letters. 17 (2): 43–50. Bibcode:2022BpRL...17...43S. doi:10.1142/S1793048022310014. ISSN 1793-0480. Archived from the original on 2022-08-17. Retrieved 2026-07-22.
Hogan, C. Michael (September 1973). "Analysis of Highway Noise". Journal of Water, Air, and Soil Pollution. 2 (3): 387–92. Bibcode:1973WASP....2..387H. doi:10.1007/BF00159677. ISSN 0049-6979. S2CID 109914430.

eia.gov (Global: 2,641^st place; English: 1,841^st place)

"Forms of energy". Energy Information Administration (EIA). US. Archived from the original on 2026-05-04. Retrieved 2026-05-01.

energy.gov (Global: 2,792^nd place; English: 1,703^rd place)

energy.gov

"Fuel Cell Basics". Energy.gov. US. 2026-04-15. Retrieved 2026-04-18.

afdc.energy.gov

"Alternative Fuels Data Center: How Do Plug-In Hybrid Electric Cars Work?". Alternative Fuels Data Center. US: Department of Energy. Retrieved 2026-05-01.

epa.gov (Global: 961^st place; English: 595^th place)

US EPA, OA (2026-05-14). "EPA Proposes to Delay Unattainable Biden-era Vehicle Standards, Projecting $1.7 Billion in Savings". www.epa.gov. Archived from the original on 2026-07-22. Retrieved 2026-07-22.

history-science-technology.com (Global: low place; English: low place)

Hassan, Ahmad Y. "Transmission of Islamic Engineering". Transfer of Islamic Technology to the West, Part II. Archived from the original on 2008-02-18.

howstuffworks.com (Global: 1,354^th place; English: 958^th place)

reference.howstuffworks.com

"Howstuffworks "Engineering"". Reference.howstuffworks.com. 2006-01-29. Archived from the original on 2009-08-21. Retrieved 2011-05-09.

iea.org (Global: 3,027^th place; English: 2,709^th place)

"Electric vehicle batteries – Global EV Outlook 2026 – Analysis". IEA. Archived from the original on 2026-07-22. Retrieved 2026-07-22.

infoplease.com (Global: 3,121^st place; English: 3,035^th place)

"Internal-combustion engine". Infoplease.com. 2007. Archived from the original on 2011-05-15. Retrieved 2011-05-09.

libretexts.org (Global: 4,683^rd place; English: 3,565^th place)

phys.libretexts.org

"6.2: Engines and Thermal Efficiency". Physics LibreTexts. 2019-07-03. Retrieved 2026-07-22.

mdpi.com (Global: 1,887^th place; English: 3,593^rd place)

Caton, Jerald A. (2018-05-22). "The Thermodynamics of Internal Combustion Engines: Examples of Insights". Inventions. 3 (2). US. doi:10.3390/invention (inactive 2026-07-24). ISSN 2411-5134. Archived from the original on 2025-12-17. Retrieved 2026-07-22.{{cite journal}}: CS1 maint: DOI inactive as of July 2026 (link)

mercedes-benz.com (Global: 8,814^th place; English: 8,175^th place)

group.mercedes-benz.com

"Benz Patent Motor Car: The First Automobile (1885–1886)". Mercedes–Benz. 2026-04-17. Archived from the original on 2024-05-22. Retrieved 2026-04-18.

merriam-webster.com (Global: 425^th place; English: 373^rd place)

"External combustion". Merriam-Webster Online Dictionary. 2010-08-13. Archived from the original on 2018-06-27. Retrieved 2011-05-09.

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

McKnight, Bill (August 2017). "The Electrically Assisted Thermostat". Motor.com. Archived from the original on 2021-05-03. Retrieved 2021-03-13.

nasa.gov (Global: 12^th place; English: 73^rd place)

grc.nasa.gov

"Rocket History – 13th Through 16th Centuries". NASA. US. Retrieved 2026-04-18.
"Engines". www.grc.nasa.gov. Archived from the original on 2026-03-23. Retrieved 2026-07-22.
"What is Thrust?". www.grc.nasa.gov. Archived from the original on 2026-04-30. Retrieved 2026-07-22.

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

"Air-Breathing Engines". nss.org. Archived from the original on 2026-07-22. Retrieved 2026-07-22.

oed.com (Global: 743^rd place; English: 419^th place)

Dictionary definitions:
- "motor". Oxford English Dictionary (online ed.). Oxford University Press. (Subscription or participating institution membership required.)

reference.com (Global: 1,491^st place; English: 1,468^th place)

dictionary.reference.com

"Motor". Dictionary.reference.com. Archived from the original on 2008-04-07. Retrieved 2011-05-09. a person or thing that imparts motion, esp. a contrivance, as a steam engine, that receives and modifies energy from some source in order to use it in driving machinery.
Dictionary.com: (World heritage) Archived 2008-04-07 at Archive-It "3. any device that converts another form of energy into mechanical energy so as to produce motion"

rochester.edu (Global: 2,816^th place; English: 1,888^th place)

history.rochester.edu

"University of Rochester, NY, The growth of the steam engine online history resource, chapter one". History.rochester.edu. Archived from the original on 2012-02-04. Retrieved 2010-02-03.

sciencedirect.com (Global: 137^th place; English: 146^th place)

https://www.sciencedirect.com/topics/engineering/electric-motor. {{cite web}}: Missing or empty |title= (help)

sciencemuseum.org.uk (Global: low place; English: 8,101^st place)

blog.sciencemuseum.org.uk

"James Watt and the separate condenser". Science Museum. 2019-01-05. Retrieved 2026-08-20.

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

pubs.sciepub.com

Maamri, Rachid; Dyatshenko, Wassily Georgivitsh; Varonkov, Alexandre Ivanovitsh; Linkov, Oleg Uryevitsh; Nikitenko, Yvan Nikolaevitsh; Dubé, Yves; Toubal, Lotfi; Kodjo, Agbossou (2013-01-23). "Development of External Combustion Engine". American Journal of Vehicle Design. 1 (2): 25–29. doi:10.12691/ajvd-1-2-2 (inactive 2026-07-24). Archived from the original on 2018-02-24. Retrieved 2026-07-22.{{cite journal}}: CS1 maint: DOI inactive as of July 2026 (link)

scribd.com (Global: 467^th place; English: 428^th place)

Emam, Mahmoud (2013). Experimental Investigations on a Standing-Wave Thermoacoustic Engine, M.Sc. Thesis. Egypt: Cairo University. Archived from the original on 2013-09-28. Retrieved 2013-09-26.

semanticscholar.org (Global: 15^th place; English: 8^th place)

api.semanticscholar.org

Hogan, C. Michael (September 1973). "Analysis of Highway Noise". Journal of Water, Air, and Soil Pollution. 2 (3): 387–92. Bibcode:1973WASP....2..387H. doi:10.1007/BF00159677. ISSN 0049-6979. S2CID 109914430.

si.edu (Global: 256^th place; English: 197^th place)

airandspace.si.edu

"Continental A-40, Horizontally-Opposed 4 Engine". National Air and Space Museum. US. Archived from the original on 2025-03-29. Retrieved 2026-04-17.

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

Crawford, Jack (2021-01-22). "7 Powerful Medieval Weapons That Characterized Siege Warfare". TheCollector. Retrieved 2026-05-01.

volkswagen-newsroom.com (Global: low place; English: low place)

"VW Beetle through the years" (Press release). Volkswagen. 2003-07-21. Archived from the original on 2026-04-20. Retrieved 2026-04-17.

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

"The world's most powerful engine enters service". Wärtsilä. 2006-09-12. Archived from the original on 2013-08-01. Retrieved 2026-03-12.

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

"World Wide Words: Engine and Motor". World Wide Words. Archived from the original on 2019-04-25. Retrieved 2020-04-30.
"Engine". Collins English Dictionary. Archived from the original on 2012-08-29. Retrieved 2012-09-03.
Quinion, Michael. "World Wide Words: Engine and Motor". Worldwide Words. Archived from the original on 2019-04-25. Retrieved 2018-02-03.
Hassan, Ahmad Y. "Transmission of Islamic Engineering". Transfer of Islamic Technology to the West, Part II. Archived from the original on 2008-02-18.
"University of Rochester, NY, The growth of the steam engine online history resource, chapter one". History.rochester.edu. Archived from the original on 2012-02-04. Retrieved 2010-02-03.
"La documentazione essenziale per l'attribuzione della scoperta". Archived from the original on 2017-02-25. Retrieved 2014-02-24. A later request was presented to the Patent Office of the Reign of Piedmont, under No. 700 of Volume VII of that Office. The text of this patent request is not available, only a photo of the table containing a drawing of the engine. This may have been either a new patent or an extension of a patent granted three days earlier, on 30 December 1857, at Turin.
"Benz Patent Motor Car: The First Automobile (1885–1886)". Mercedes–Benz. 2026-04-17. Archived from the original on 2024-05-22. Retrieved 2026-04-18.
"VW Beetle through the years" (Press release). Volkswagen. 2003-07-21. Archived from the original on 2026-04-20. Retrieved 2026-04-17.
"Continental A-40, Horizontally-Opposed 4 Engine". National Air and Space Museum. US. Archived from the original on 2025-03-29. Retrieved 2026-04-17.
McKnight, Bill (August 2017). "The Electrically Assisted Thermostat". Motor.com. Archived from the original on 2021-05-03. Retrieved 2021-03-13.
"The world's most powerful engine enters service". Wärtsilä. 2006-09-12. Archived from the original on 2013-08-01. Retrieved 2026-03-12.
Caton, Jerald A. (2018-05-22). "The Thermodynamics of Internal Combustion Engines: Examples of Insights". Inventions. 3 (2). US. doi:10.3390/invention (inactive 2026-07-24). ISSN 2411-5134. Archived from the original on 2025-12-17. Retrieved 2026-07-22.{{cite journal}}: CS1 maint: DOI inactive as of July 2026 (link)
Proctor, Charles Lafayette II. "Internal Combustion engines". Encyclopædia Britannica Online. Archived from the original on 2011-06-29. Retrieved 2011-05-09.
"Internal combustion engine". Answers.com. Archived from the original on 2011-06-28. Retrieved 2011-05-09.
"Internal-combustion engine". Infoplease.com. 2007. Archived from the original on 2011-05-15. Retrieved 2011-05-09.
"External combustion". Merriam-Webster Online Dictionary. 2010-08-13. Archived from the original on 2018-06-27. Retrieved 2011-05-09.
Maamri, Rachid; Dyatshenko, Wassily Georgivitsh; Varonkov, Alexandre Ivanovitsh; Linkov, Oleg Uryevitsh; Nikitenko, Yvan Nikolaevitsh; Dubé, Yves; Toubal, Lotfi; Kodjo, Agbossou (2013-01-23). "Development of External Combustion Engine". American Journal of Vehicle Design. 1 (2): 25–29. doi:10.12691/ajvd-1-2-2 (inactive 2026-07-24). Archived from the original on 2018-02-24. Retrieved 2026-07-22.{{cite journal}}: CS1 maint: DOI inactive as of July 2026 (link)
"Air-Breathing Engines". nss.org. Archived from the original on 2026-07-22. Retrieved 2026-07-22.
"Engines". www.grc.nasa.gov. Archived from the original on 2026-03-23. Retrieved 2026-07-22.
"Electric vehicle batteries – Global EV Outlook 2026 – Analysis". IEA. Archived from the original on 2026-07-22. Retrieved 2026-07-22.
US EPA, OA (2026-05-14). "EPA Proposes to Delay Unattainable Biden-era Vehicle Standards, Projecting $1.7 Billion in Savings". www.epa.gov. Archived from the original on 2026-07-22. Retrieved 2026-07-22.
Girolami, Gregory S. (2020). "A Brief History of Thermodynamics, as Illustrated by Books and People". Journal of Chemical & Engineering Data. 65 (2): 298–311. doi:10.1021/acs.jced.9b00515. Archived from the original on 2018-06-03. Retrieved 2026-07-22.
Emam, Mahmoud (2013). Experimental Investigations on a Standing-Wave Thermoacoustic Engine, M.Sc. Thesis. Egypt: Cairo University. Archived from the original on 2013-09-28. Retrieved 2013-09-26.
Shu, Yao-Gen; Ou-Yang, Zhong-Can (June 2022). "Biomotor is not a Heat Engine". Biophysical Reviews and Letters. 17 (2): 43–50. Bibcode:2022BpRL...17...43S. doi:10.1142/S1793048022310014. ISSN 1793-0480. Archived from the original on 2022-08-17. Retrieved 2026-07-22.
Anonymous (2010-06-22). "Motors". American Council for an Energy-Efficient Economy. Archived from the original on 2012-10-23.
"Forms of energy". Energy Information Administration (EIA). US. Archived from the original on 2026-05-04. Retrieved 2026-05-01.
"Howstuffworks "Engineering"". Reference.howstuffworks.com. 2006-01-29. Archived from the original on 2009-08-21. Retrieved 2011-05-09.
"What is Thrust?". www.grc.nasa.gov. Archived from the original on 2026-04-30. Retrieved 2026-07-22.

worldcat.org (Global: 4^th place; English: 4^th place)

search.worldcat.org

Caton, Jerald A. (2018-05-22). "The Thermodynamics of Internal Combustion Engines: Examples of Insights". Inventions. 3 (2). US. doi:10.3390/invention (inactive 2026-07-24). ISSN 2411-5134. Archived from the original on 2025-12-17. Retrieved 2026-07-22.{{cite journal}}: CS1 maint: DOI inactive as of July 2026 (link)
Girolami, Gregory S. (2020-02-13). "A Brief History of Thermodynamics, As Illustrated by Books and People". Journal of Chemical & Engineering Data. 65 (2): 298–311. doi:10.1021/acs.jced.9b00515. ISSN 0021-9568.
Bataineh, Khaled M. (2018). "Numerical thermodynamic model of alpha-type Stirling engine". Case Studies in Thermal Engineering. 12: 104–116. doi:10.1016/j.csite.2018.03.010. ISSN 2214-157X.
Shu, Yao-Gen; Ou-Yang, Zhong-Can (June 2022). "Biomotor is not a Heat Engine". Biophysical Reviews and Letters. 17 (2): 43–50. Bibcode:2022BpRL...17...43S. doi:10.1142/S1793048022310014. ISSN 1793-0480. Archived from the original on 2022-08-17. Retrieved 2026-07-22.
Hogan, C. Michael (September 1973). "Analysis of Highway Noise". Journal of Water, Air, and Soil Pollution. 2 (3): 387–92. Bibcode:1973WASP....2..387H. doi:10.1007/BF00159677. ISSN 0049-6979. S2CID 109914430.

worldscientific.com (Global: low place; English: 6,878^th place)

Shu, Yao-Gen; Ou-Yang, Zhong-Can (June 2022). "Biomotor is not a Heat Engine". Biophysical Reviews and Letters. 17 (2): 43–50. Bibcode:2022BpRL...17...43S. doi:10.1142/S1793048022310014. ISSN 1793-0480. Archived from the original on 2022-08-17. Retrieved 2026-07-22.

worldwidewords.org (Global: 8,811^th place; English: 5,849^th place)

"World Wide Words: Engine and Motor". World Wide Words. Archived from the original on 2019-04-25. Retrieved 2020-04-30.
Quinion, Michael. "World Wide Words: Engine and Motor". Worldwide Words. Archived from the original on 2019-04-25. Retrieved 2018-02-03.

Engine (English Wikipedia)

about.com (Global: 419th place; English: 335th place)

inventors.about.com

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

acs.org (Global: 865th place; English: 887th place)

pubs.acs.org

adsabs.harvard.edu (Global: 14th place; English: 9th place)

ui.adsabs.harvard.edu

answers.com (Global: 2,156th place; English: 1,933rd place)

archive-it.org (Global: 1,292nd place; English: 869th place)

wayback.archive-it.org

archive.org (Global: 6th place; English: 6th place)

autodesk.com (Global: low place; English: 8,250th place)

barsantiematteucci.it (Global: low place; English: low place)

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

britannica.com (Global: 37th place; English: 64th place)

cmu.edu (Global: 2,125th place; English: 1,347th place)

opi.cs.cmu.edu

collinsdictionary.com (Global: 1,831st place; English: 1,216th place)

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

eia.gov (Global: 2,641st place; English: 1,841st place)

energy.gov (Global: 2,792nd place; English: 1,703rd place)

energy.gov

afdc.energy.gov

epa.gov (Global: 961st place; English: 595th place)

history-science-technology.com (Global: low place; English: low place)

howstuffworks.com (Global: 1,354th place; English: 958th place)

reference.howstuffworks.com

iea.org (Global: 3,027th place; English: 2,709th place)

infoplease.com (Global: 3,121st place; English: 3,035th place)

libretexts.org (Global: 4,683rd place; English: 3,565th place)

phys.libretexts.org

mdpi.com (Global: 1,887th place; English: 3,593rd place)

mercedes-benz.com (Global: 8,814th place; English: 8,175th place)

group.mercedes-benz.com

merriam-webster.com (Global: 425th place; English: 373rd place)

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

nasa.gov (Global: 12th place; English: 73rd place)

grc.nasa.gov

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

oed.com (Global: 743rd place; English: 419th place)

reference.com (Global: 1,491st place; English: 1,468th place)

dictionary.reference.com

rochester.edu (Global: 2,816th place; English: 1,888th place)

history.rochester.edu

sciencedirect.com (Global: 137th place; English: 146th place)

sciencemuseum.org.uk (Global: low place; English: 8,101st place)

blog.sciencemuseum.org.uk

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

pubs.sciepub.com

scribd.com (Global: 467th place; English: 428th place)

semanticscholar.org (Global: 15th place; English: 8th place)

api.semanticscholar.org

si.edu (Global: 256th place; English: 197th place)

airandspace.si.edu

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

volkswagen-newsroom.com (Global: low place; English: low place)

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

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

worldcat.org (Global: 4th place; English: 4th place)

search.worldcat.org

worldscientific.com (Global: low place; English: 6,878th place)

worldwidewords.org (Global: 8,811th place; English: 5,849th place)

about.com (Global: 419^th place; English: 335^th place)

acs.org (Global: 865^th place; English: 887^th place)

adsabs.harvard.edu (Global: 14^th place; English: 9^th place)

answers.com (Global: 2,156^th place; English: 1,933^rd place)

archive-it.org (Global: 1,292^nd place; English: 869^th place)

archive.org (Global: 6^th place; English: 6^th place)

autodesk.com (Global: low place; English: 8,250^th place)

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

britannica.com (Global: 37^th place; English: 64^th place)

cmu.edu (Global: 2,125^th place; English: 1,347^th place)

collinsdictionary.com (Global: 1,831^st place; English: 1,216^th place)

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

eia.gov (Global: 2,641^st place; English: 1,841^st place)

energy.gov (Global: 2,792^nd place; English: 1,703^rd place)

epa.gov (Global: 961^st place; English: 595^th place)

howstuffworks.com (Global: 1,354^th place; English: 958^th place)

iea.org (Global: 3,027^th place; English: 2,709^th place)

infoplease.com (Global: 3,121^st place; English: 3,035^th place)

libretexts.org (Global: 4,683^rd place; English: 3,565^th place)

mdpi.com (Global: 1,887^th place; English: 3,593^rd place)

mercedes-benz.com (Global: 8,814^th place; English: 8,175^th place)

merriam-webster.com (Global: 425^th place; English: 373^rd place)

nasa.gov (Global: 12^th place; English: 73^rd place)

oed.com (Global: 743^rd place; English: 419^th place)

reference.com (Global: 1,491^st place; English: 1,468^th place)

rochester.edu (Global: 2,816^th place; English: 1,888^th place)

sciencedirect.com (Global: 137^th place; English: 146^th place)

sciencemuseum.org.uk (Global: low place; English: 8,101^st place)

scribd.com (Global: 467^th place; English: 428^th place)

semanticscholar.org (Global: 15^th place; English: 8^th place)

si.edu (Global: 256^th place; English: 197^th place)

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

worldcat.org (Global: 4^th place; English: 4^th place)

worldscientific.com (Global: low place; English: 6,878^th place)

worldwidewords.org (Global: 8,811^th place; English: 5,849^th place)