Blue (English Wikipedia)

A., Maerz; M. Rea, Paul (1930). A Dictionary Of Color (1 ed.). McGraw-Hill Book Company, Inc. p. 33. Retrieved 23 July 2026.
Stone, Terry Lee (2006). Color design workbook: a real-world guide to using color in graphic design. Internet Archive. Gloucester, Mass. : Rockport Publishers. ISBN 978-1-59253-192-9.

army.mil (Global: 250^th place; English: 134^th place)

Walter H. Bradford. "Wearing Army Blue: a 200-year Tradition". army.mil. Archived from the original on 19 November 2014.

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

"1865 – 1901 / The Age of Dyes". BASF. 15 April 2026. Retrieved 15 April 2026.

bbc.co.uk (Global: 11^th place; English: 10^th place)

news.bbc.co.uk

"Why is the Conservative Party blue?". BBC News. 20 April 2006. Retrieved 23 April 2018.

biologists.org (Global: 5,151^st place; English: 4,741^st place)

jeb.biologists.org

Prum RO, Torres RH (May 2004). "Structural Colouration of Mammalian Skin: Convergent Evolution of Coherently Scattering Dermal Collagen Arrays" (PDF). The Journal of Experimental Biology. 207 (Pt 12): 2157–2172. Bibcode:2004JExpB.207.2157P. doi:10.1242/jeb.00989. hdl:1808/1599. PMID 15143148. S2CID 8268610. Archived (PDF) from the original on 9 October 2022.

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

Defonseka, Chris (20 May 2019). Polymeric Composites with Rice Hulls: An Introduction. Walter de Gruyter GmbH & Co KG. ISBN 978-3-11-064320-6.
Fox, Denis Llewellyn (1979). Biochromy: Natural Coloration of Living Things. University of California Press. p. 9. ISBN 978-0-520-03699-4. Archived from the original on 3 October 2015.
Moorey, Peter Roger (1999). Ancient Mesopotamian Materials and Industries: the Archaeological Evidence. Eisenbrauns. pp. 86–87. ISBN 978-1-57506-042-2.
Moorey, Peter Roger (1999). Ancient mesopotamian materials and industries: the archaeological evidence. Eisenbrauns. pp. 86–87. ISBN 978-1-57506-042-2.

boston.com (Global: 468^th place; English: 271^st place)

archive.boston.com

Douglas Belkin (17 October 2006). "Don't it make my blue eyes brown Americans are seeing a dramatic color change". The Boston Globe. Archived from the original on 23 February 2012.

byu.edu (Global: 1,502^nd place; English: 829^th place)

theboard.byu.edu

"Board Question #31244 | The 100 Hour Board". Theboard.byu.edu. Archived from the original on 31 March 2012. Retrieved 31 December 2011.

carnby.altervista.org (Global: low place; English: low place)

"Pigmentation, the Pilous System, and Morphology of the Soft Parts". altervista.org. Archived from the original on 26 July 2011.

conservative.ca (Global: low place; English: low place)

"Official Logos". Conservative Party of Canada. Retrieved 13 February 2024.

delish.com (Global: low place; English: 8,650^th place)

"You Need To Know The Truth About Blue Raspberry". Delish. 21 June 2023. Retrieved 22 October 2024.

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

Nakamura, S.; Mukai, T.; Senoh, M. (1994). "Candela-Class High-Brightness InGaN/AlGaN Double-Heterostructure Blue-Light-Emitting-Diodes". Applied Physics Letters. 64 (13): 1687. Bibcode:1994ApPhL..64.1687N. doi:10.1063/1.111832. ISSN 0003-6951.
Newsome, Andrew G.; Culver, Catherine A.; Van Breemen, Richard B. (2014). "Nature's Palette: The Search for Natural Blue Colorants". Journal of Agricultural and Food Chemistry. 62 (28): 6498–6511. Bibcode:2014JAFC...62.6498N. doi:10.1021/jf501419q. PMID 24930897.
Placke, Mina; Fischer, Norbert; Colditz, Michael; Kunkel, Ernst; Bohne, Karl-Heinz (2016). "Drawing and Writing Materials". Ullmann's Encyclopedia of Industrial Chemistry. pp. 1–12. doi:10.1002/14356007.a09_037.pub2. ISBN 978-3-527-30673-2.
Glenn S. Smith (July 2005). "Human color vision and the unsaturated blue color of the daytime sky" (PDF). American Journal of Physics. 73 (7): 590–597. Bibcode:2005AmJPh..73..590S. doi:10.1119/1.1858479. Archived (PDF) from the original on 15 July 2011. Near sunrise and sunset, most of the light we see comes in nearly tangent to the Earth's surface, so that the light's path through the atmosphere is so long that much of the blue and even green light is scattered out, leaving the sun rays and the clouds it illuminates red. Therefore, when looking at the sunset and sunrise, the colour red is more perceptible than any of the other colours.
Harmon, A. D.; Weisgraber, K. H.; Weiss, U. (1980). "Preformed azulene pigments of Lactarius indigo (Schw.) Fries (Russulaceae, Basidiomycetes)". Experientia. 36: 54–56. doi:10.1007/BF02003967. S2CID 21207966.
Umbers, Kate D. L. (2013). "On the Perception, Production and Function of Blue Colouration in Animals". Journal of Zoology. 289 (4): 229–242. Bibcode:2013JZoo..289..229U. doi:10.1111/jzo.12001.
Goda, Makoto; Fujii, Ryozo (1995). "Blue Chromatophores in Two Species of Callionymid Fish". Zoological Science. 12 (6): 811–813. doi:10.2108/zsj.12.811. S2CID 86385679.
Potyrailo, Radislav A.; Bonam, Ravi K.; Hartley, John G.; Starkey, Timothy A.; Vukusic, Peter; Vasudev, Milana; Bunning, Timothy; Naik, Rajesh R.; Tang, Zhexiong; Palacios, Manuel A.; Larsen, Michael; Le Tarte, Laurie A.; Grande, James C.; Zhong, Sheng; Deng, Tao (2015). "Towards outperforming conventional sensor arrays with fabricated individual photonic vapour sensors inspired by Morpho butterflies". Nature Communications. 6 7959. Bibcode:2015NatCo...6.7959P. doi:10.1038/ncomms8959. PMC 4569698. PMID 26324320.
Prum RO, Torres RH (May 2004). "Structural Colouration of Mammalian Skin: Convergent Evolution of Coherently Scattering Dermal Collagen Arrays" (PDF). The Journal of Experimental Biology. 207 (Pt 12): 2157–2172. Bibcode:2004JExpB.207.2157P. doi:10.1242/jeb.00989. hdl:1808/1599. PMID 15143148. S2CID 8268610. Archived (PDF) from the original on 9 October 2022.
Ariel Rodríguez; Nicholas I. Mundy; Roberto Ibáñez; Heike Pröhl (2020). "Being red, blue and green: the genetic basis of coloration differences in the strawberry poison frog (Oophaga pumilio)". BMC Genomics. 21 (1): 301. Bibcode:2020BMCG...21..301R. doi:10.1186/s12864-020-6719-5. PMC 7158012. PMID 32293261.
Makoto Goda; Ryozo Fujii (1998). "The Blue Coloration of the Common Surgeonfish, Paracanthurus hepatus—II. Color Revelation and Color Changes". Zoological Science. 15 (3): 323–333. doi:10.2108/zsj.15.323. PMID 18465994. S2CID 5860272.
Wielgus AR, Sarna T (2005). "Melanin in human irides of different color and age of donors". Pigment Cell Res. 18 (6): 454–64. doi:10.1111/j.1600-0749.2005.00268.x. PMID 16280011.
Prota G, Hu DN, Vincensi MR, McCormick SA, Napolitano A (1998). "Characterization of melanins in human irides and cultured uveal melanocytes from eyes of different colors". Exp. Eye Res. 67 (3): 293–99. doi:10.1006/exer.1998.0518. PMID 9778410.
Mason, Clyde W. (1924). "Blue Eyes". Journal of Physical Chemistry. 28 (5): 498–501. Bibcode:1924JPhCh..28..498M. doi:10.1021/j150239a007.
Sarkar, Anindya; Mukherjee, Arati Deshpande; Bera, M. K.; Das, B.; Juyal, Navin; Morthekai, P.; Deshpande, R. D.; Shinde, V. S.; Rao, L. S. (25 May 2016). "Oxygen isotope in archaeological bioapatites from India: Implications to climate change and decline of Bronze Age Harappan civilization". Scientific Reports. 6 (1) 26555. Bibcode:2016NatSR...626555S. doi:10.1038/srep26555. ISSN 2045-2322. PMC 4879637. PMID 27222033. S2CID 4425978.

excnagasi.in (Global: low place; English: low place)

"Excavation Bhirrana | ASI Nagpur". excnagasi.in. Archived from the original on 4 August 2020. Retrieved 21 August 2020.

exeter.ac.uk (Global: 6,080^th place; English: 3,552^nd place)

emps.exeter.ac.uk

"Iridescence in Lepidoptera". Natural Photonics (originally in Physics Review Magazine). University of Exeter. September 1998. Archived from the original on 7 April 2014. Retrieved 27 April 2012.

ghostarchive.org (Global: 64^th place; English: 28^th place)

Prum RO, Torres RH (May 2004). "Structural Colouration of Mammalian Skin: Convergent Evolution of Coherently Scattering Dermal Collagen Arrays" (PDF). The Journal of Experimental Biology. 207 (Pt 12): 2157–2172. Bibcode:2004JExpB.207.2157P. doi:10.1242/jeb.00989. hdl:1808/1599. PMID 15143148. S2CID 8268610. Archived (PDF) from the original on 9 October 2022.

hdl.handle.net (Global: 66^th place; English: 34^th place)

Prum RO, Torres RH (May 2004). "Structural Colouration of Mammalian Skin: Convergent Evolution of Coherently Scattering Dermal Collagen Arrays" (PDF). The Journal of Experimental Biology. 207 (Pt 12): 2157–2172. Bibcode:2004JExpB.207.2157P. doi:10.1242/jeb.00989. hdl:1808/1599. PMID 15143148. S2CID 8268610. Archived (PDF) from the original on 9 October 2022.

historicalkits.co.uk (Global: 5,085^th place; English: 3,666^th place)

"FIFA World Cup 2010 – Historical Football Kits". Historicalkits.co.uk. Archived from the original on 7 January 2012. Retrieved 31 December 2011.

indiatimes.com (Global: 31^st place; English: 19^th place)

"This Is The Reason Why Indian Cricket Team Wears A Blue Jersey During ODIs". 3 July 2016.

jstor.org (Global: 23^rd place; English: 15^th place)

DIKSHIT, K.N. (2012). "The Rise of Indian Civilization: Recent Archaeological Evidence from the Plains of 'Lost' River Saraswati and Radio-Metric Dates". Bulletin of the Deccan College Research Institute. 72/73: 1–42. ISSN 0045-9801. JSTOR 43610686.

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

"Laserglow – Blue, Red, Yellow, Green Lasers". Laserglow.com. Archived from the original on 16 September 2011. Retrieved 20 September 2011.
"Laserglow – Optogenetics". Laserglow.com. Archived from the original on 15 September 2011. Retrieved 20 September 2011.

latimes.com (Global: 32^nd place; English: 21^st place)

Battaglio, Stephen (3 November 2016). "When red meant Democratic and blue was Republican. A brief history of TV electoral maps". Los Angeles Times. Retrieved 28 November 2018.

nae.edu (Global: 7,974^th place; English: 5,060^th place)

"Dr. Shuji Nakamura". National Academy of Engineering. Archived from the original on 11 April 2019. Retrieved 4 June 2023.

nd.edu (Global: 2,343^rd place; English: 1,280^th place)

"The Spirit of Notre Dame". Nd.edu. Archived from the original on 30 December 2011. Retrieved 31 December 2011.

nih.gov (Global: 5^th place; English: 5^th place)

pubmed.ncbi.nlm.nih.gov

Newsome, Andrew G.; Culver, Catherine A.; Van Breemen, Richard B. (2014). "Nature's Palette: The Search for Natural Blue Colorants". Journal of Agricultural and Food Chemistry. 62 (28): 6498–6511. Bibcode:2014JAFC...62.6498N. doi:10.1021/jf501419q. PMID 24930897.
Potyrailo, Radislav A.; Bonam, Ravi K.; Hartley, John G.; Starkey, Timothy A.; Vukusic, Peter; Vasudev, Milana; Bunning, Timothy; Naik, Rajesh R.; Tang, Zhexiong; Palacios, Manuel A.; Larsen, Michael; Le Tarte, Laurie A.; Grande, James C.; Zhong, Sheng; Deng, Tao (2015). "Towards outperforming conventional sensor arrays with fabricated individual photonic vapour sensors inspired by Morpho butterflies". Nature Communications. 6 7959. Bibcode:2015NatCo...6.7959P. doi:10.1038/ncomms8959. PMC 4569698. PMID 26324320.
Prum RO, Torres RH (May 2004). "Structural Colouration of Mammalian Skin: Convergent Evolution of Coherently Scattering Dermal Collagen Arrays" (PDF). The Journal of Experimental Biology. 207 (Pt 12): 2157–2172. Bibcode:2004JExpB.207.2157P. doi:10.1242/jeb.00989. hdl:1808/1599. PMID 15143148. S2CID 8268610. Archived (PDF) from the original on 9 October 2022.
Ariel Rodríguez; Nicholas I. Mundy; Roberto Ibáñez; Heike Pröhl (2020). "Being red, blue and green: the genetic basis of coloration differences in the strawberry poison frog (Oophaga pumilio)". BMC Genomics. 21 (1): 301. Bibcode:2020BMCG...21..301R. doi:10.1186/s12864-020-6719-5. PMC 7158012. PMID 32293261.
Makoto Goda; Ryozo Fujii (1998). "The Blue Coloration of the Common Surgeonfish, Paracanthurus hepatus—II. Color Revelation and Color Changes". Zoological Science. 15 (3): 323–333. doi:10.2108/zsj.15.323. PMID 18465994. S2CID 5860272.
Wielgus AR, Sarna T (2005). "Melanin in human irides of different color and age of donors". Pigment Cell Res. 18 (6): 454–64. doi:10.1111/j.1600-0749.2005.00268.x. PMID 16280011.
Prota G, Hu DN, Vincensi MR, McCormick SA, Napolitano A (1998). "Characterization of melanins in human irides and cultured uveal melanocytes from eyes of different colors". Exp. Eye Res. 67 (3): 293–99. doi:10.1006/exer.1998.0518. PMID 9778410.
Sarkar, Anindya; Mukherjee, Arati Deshpande; Bera, M. K.; Das, B.; Juyal, Navin; Morthekai, P.; Deshpande, R. D.; Shinde, V. S.; Rao, L. S. (25 May 2016). "Oxygen isotope in archaeological bioapatites from India: Implications to climate change and decline of Bronze Age Harappan civilization". Scientific Reports. 6 (1) 26555. Bibcode:2016NatSR...626555S. doi:10.1038/srep26555. ISSN 2045-2322. PMC 4879637. PMID 27222033. S2CID 4425978.

ncbi.nlm.nih.gov

Potyrailo, Radislav A.; Bonam, Ravi K.; Hartley, John G.; Starkey, Timothy A.; Vukusic, Peter; Vasudev, Milana; Bunning, Timothy; Naik, Rajesh R.; Tang, Zhexiong; Palacios, Manuel A.; Larsen, Michael; Le Tarte, Laurie A.; Grande, James C.; Zhong, Sheng; Deng, Tao (2015). "Towards outperforming conventional sensor arrays with fabricated individual photonic vapour sensors inspired by Morpho butterflies". Nature Communications. 6 7959. Bibcode:2015NatCo...6.7959P. doi:10.1038/ncomms8959. PMC 4569698. PMID 26324320.
Ariel Rodríguez; Nicholas I. Mundy; Roberto Ibáñez; Heike Pröhl (2020). "Being red, blue and green: the genetic basis of coloration differences in the strawberry poison frog (Oophaga pumilio)". BMC Genomics. 21 (1): 301. Bibcode:2020BMCG...21..301R. doi:10.1186/s12864-020-6719-5. PMC 7158012. PMID 32293261.
Sarkar, Anindya; Mukherjee, Arati Deshpande; Bera, M. K.; Das, B.; Juyal, Navin; Morthekai, P.; Deshpande, R. D.; Shinde, V. S.; Rao, L. S. (25 May 2016). "Oxygen isotope in archaeological bioapatites from India: Implications to climate change and decline of Bronze Age Harappan civilization". Scientific Reports. 6 (1) 26555. Bibcode:2016NatSR...626555S. doi:10.1038/srep26555. ISSN 2045-2322. PMC 4879637. PMID 27222033. S2CID 4425978.

nytimes.com (Global: 7^th place; English: 7^th place)

Overbye, Dennis (7 October 2014). "Nobel Prize in Physics". The New York Times.

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

Glenn S. Smith (July 2005). "Human color vision and the unsaturated blue color of the daytime sky" (PDF). American Journal of Physics. 73 (7): 590–597. Bibcode:2005AmJPh..73..590S. doi:10.1119/1.1858479. Archived (PDF) from the original on 15 July 2011. Near sunrise and sunset, most of the light we see comes in nearly tangent to the Earth's surface, so that the light's path through the atmosphere is so long that much of the blue and even green light is scattered out, leaving the sun rays and the clouds it illuminates red. Therefore, when looking at the sunset and sunrise, the colour red is more perceptible than any of the other colours.

patents.google.com (Global: 1,154^th place; English: 606^th place)

Iwasa, Naruhito; Mukai, Takashi and Nakamura, Shuji U.S. patent 5,578,839 "Light-emitting gallium nitride-based compound semiconductor device" Issue date: 26 November 1996

peo.gov.au (Global: low place; English: low place)

"What are the colours of the Australian political parties? - Parliamentary Education Office". peo.gov.au. Retrieved 13 February 2024.

researchgate.net (Global: 96^th place; English: 89^th place)

Vane-Wright, Richard I. (22 February 1979). "The coloration, identification and phylogeny of Nessaea butterflies (Lepidoptera: Nymphalidae)". Bulletin of the British Museum (Natural History). Entomology Series. 38 (2): 27–56. Retrieved 8 February 2018.
Simonis, Priscilla; Serge, Berthier (30 March 2012). "Chapter number 1 How Nature produces blue color". In Massaro, Alessandro (ed.). Photonic Crystals - Introduction, Applications and Theory. InTech. ISBN 978-953-51-0431-5. Retrieved 8 February 2018.

sanford-artedventures.com (Global: low place; English: low place)

Sandra Espinet. "Glossary Term: Color wheel". Sanford-artedventures.com. Archived from the original on 7 September 2008. Retrieved 25 June 2022.

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

api.semanticscholar.org

Harmon, A. D.; Weisgraber, K. H.; Weiss, U. (1980). "Preformed azulene pigments of Lactarius indigo (Schw.) Fries (Russulaceae, Basidiomycetes)". Experientia. 36: 54–56. doi:10.1007/BF02003967. S2CID 21207966.
Goda, Makoto; Fujii, Ryozo (1995). "Blue Chromatophores in Two Species of Callionymid Fish". Zoological Science. 12 (6): 811–813. doi:10.2108/zsj.12.811. S2CID 86385679.
Prum RO, Torres RH (May 2004). "Structural Colouration of Mammalian Skin: Convergent Evolution of Coherently Scattering Dermal Collagen Arrays" (PDF). The Journal of Experimental Biology. 207 (Pt 12): 2157–2172. Bibcode:2004JExpB.207.2157P. doi:10.1242/jeb.00989. hdl:1808/1599. PMID 15143148. S2CID 8268610. Archived (PDF) from the original on 9 October 2022.
Makoto Goda; Ryozo Fujii (1998). "The Blue Coloration of the Common Surgeonfish, Paracanthurus hepatus—II. Color Revelation and Color Changes". Zoological Science. 15 (3): 323–333. doi:10.2108/zsj.15.323. PMID 18465994. S2CID 5860272.
Sarkar, Anindya; Mukherjee, Arati Deshpande; Bera, M. K.; Das, B.; Juyal, Navin; Morthekai, P.; Deshpande, R. D.; Shinde, V. S.; Rao, L. S. (25 May 2016). "Oxygen isotope in archaeological bioapatites from India: Implications to climate change and decline of Bronze Age Harappan civilization". Scientific Reports. 6 (1) 26555. Bibcode:2016NatSR...626555S. doi:10.1038/srep26555. ISSN 2045-2322. PMC 4879637. PMID 27222033. S2CID 4425978.

sgpc.net (Global: low place; English: low place)

old.sgpc.net

Sikh Rehat Maryada: Section Three, Chapter IV, Article V, r.

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

library.si.edu

"The Science of Color". library.si.edu. 2015. Retrieved 25 June 2022.

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

"Nishan Sahib Khanda Sikh Symbols Sikh Museum History Heritage Sikhs". www.sikhmuseum.com.

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

Nakamura, Shuji. "Development of the Blue Light-Emitting Diode". SPIE Newsroom. Retrieved 28 September 2015.

tate.org.uk (Global: 2,085^th place; English: 1,423^rd place)

"Eight blue moments in art history". The Tate. Archived from the original on 16 October 2018. Retrieved 16 October 2018.

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

Tekhelet.com Archived 30 January 2008 at the Wayback Machine, the Ptil Tekhelet Organization

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

"150+ Shades of Blue Color with Names, Hex, RGB, and CMYK Codes". thecoloursmeaning. Colours Meaning. Retrieved 23 July 2026.

theminjoo.kr (Global: low place; English: low place)

"더불어민주당". 8 March 2023. Archived from the original on 8 March 2023. Retrieved 13 February 2024.

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

Edery, Mike. "Real Chilazon Discovered!". Torah Table. Retrieved 9 August 2026.

ucar.edu (Global: 8,747^th place; English: 6,863^rd place)

scied.ucar.edu

"Wavelength of Blue and Red Light". Center for Science Education. Retrieved 25 June 2022.

ucr.edu (Global: 1,400^th place; English: 754^th place)

math.ucr.edu

"Why is the sky Blue?". ucr.edu. Archived from the original on 2 November 2015.

ucsb.edu (Global: 1,099^th place; English: 630^th place)

ssleec.ucsb.edu

"Professor Shuji Nakamura was key to the Invention of Blu-Ray Technology". University of California, Santa Barbara. 12 January 2023. Archived from the original on 24 March 2023. Retrieved 4 June 2023.

news.ucsb.edu

2006 Millennium technology prize awarded to UCSB's Shuji Nakamura. Ia.ucsb.edu (15 June 2006). Retrieved on 3 August 2019.

udayton.edu (Global: low place; English: 6,322^nd place)

campus.udayton.edu

"Your question answered". udayton.edu. Archived from the original on 4 September 2006.

uj.edu.pl (Global: 1,353^rd place; English: 5,595^th place)

ruj.uj.edu.pl

Wielgus AR, Sarna T (2005). "Melanin in human irides of different color and age of donors". Pigment Cell Res. 18 (6): 454–64. doi:10.1111/j.1600-0749.2005.00268.x. PMID 16280011.

usatoday.com (Global: 55^th place; English: 36^th place)

Weise, Elizabeth (5 February 2008). "More than meets the blue eye: You may all be related". USA TODAY. Archived from the original on 10 September 2012. Retrieved 23 December 2011.

usc.edu (Global: 1,432^nd place; English: 908^th place)

today.usc.edu

"Pink for boys and blue for girls: the colorful history of things designed for kids". USC Today. 22 December 2017. Retrieved 22 October 2024.

w3.org (Global: 1,633^rd place; English: 1,401^st place)

"CSS Color Module Level 3". W3C. Archived from the original on 23 December 2010.

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

"CSS Color Module Level 3". W3C. Archived from the original on 23 December 2010.
Tim Howard (20 May 2012). "Why Isn't the Sky Blue?". Radiolab at WNYC Studios (Podcast). Linguist: Guy Deutscher; Professor: Jules Davidoff. Archived from the original on 25 October 2018. Retrieved 27 April 2018.
Sandra Espinet. "Glossary Term: Color wheel". Sanford-artedventures.com. Archived from the original on 7 September 2008. Retrieved 25 June 2022.
"Professor Shuji Nakamura was key to the Invention of Blu-Ray Technology". University of California, Santa Barbara. 12 January 2023. Archived from the original on 24 March 2023. Retrieved 4 June 2023.
"Dr. Shuji Nakamura". National Academy of Engineering. Archived from the original on 11 April 2019. Retrieved 4 June 2023.
"Laserglow – Blue, Red, Yellow, Green Lasers". Laserglow.com. Archived from the original on 16 September 2011. Retrieved 20 September 2011.
"Laserglow – Optogenetics". Laserglow.com. Archived from the original on 15 September 2011. Retrieved 20 September 2011.
"Iridescence in Lepidoptera". Natural Photonics (originally in Physics Review Magazine). University of Exeter. September 1998. Archived from the original on 7 April 2014. Retrieved 27 April 2012.
"Eight blue moments in art history". The Tate. Archived from the original on 16 October 2018. Retrieved 16 October 2018.
"Why is the sky Blue?". ucr.edu. Archived from the original on 2 November 2015.
Glenn S. Smith (July 2005). "Human color vision and the unsaturated blue color of the daytime sky" (PDF). American Journal of Physics. 73 (7): 590–597. Bibcode:2005AmJPh..73..590S. doi:10.1119/1.1858479. Archived (PDF) from the original on 15 July 2011. Near sunrise and sunset, most of the light we see comes in nearly tangent to the Earth's surface, so that the light's path through the atmosphere is so long that much of the blue and even green light is scattered out, leaving the sun rays and the clouds it illuminates red. Therefore, when looking at the sunset and sunrise, the colour red is more perceptible than any of the other colours.
Anne Marie Helmenstine. "Why Is the Ocean Blue?". About.com Education. Archived from the original on 18 November 2012.
Fox, Denis Llewellyn (1979). Biochromy: Natural Coloration of Living Things. University of California Press. p. 9. ISBN 978-0-520-03699-4. Archived from the original on 3 October 2015.
Douglas Belkin (17 October 2006). "Don't it make my blue eyes brown Americans are seeing a dramatic color change". The Boston Globe. Archived from the original on 23 February 2012.
"Pigmentation, the Pilous System, and Morphology of the Soft Parts". altervista.org. Archived from the original on 26 July 2011.
Weise, Elizabeth (5 February 2008). "More than meets the blue eye: You may all be related". USA TODAY. Archived from the original on 10 September 2012. Retrieved 23 December 2011.
"Excavation Bhirrana | ASI Nagpur". excnagasi.in. Archived from the original on 4 August 2020. Retrieved 21 August 2020.
Walter H. Bradford. "Wearing Army Blue: a 200-year Tradition". army.mil. Archived from the original on 19 November 2014.
Tekhelet.com Archived 30 January 2008 at the Wayback Machine, the Ptil Tekhelet Organization
"Your question answered". udayton.edu. Archived from the original on 4 September 2006.
"The Spirit of Notre Dame". Nd.edu. Archived from the original on 30 December 2011. Retrieved 31 December 2011.
"Board Question #31244 | The 100 Hour Board". Theboard.byu.edu. Archived from the original on 31 March 2012. Retrieved 31 December 2011.
"FIFA World Cup 2010 – Historical Football Kits". Historicalkits.co.uk. Archived from the original on 7 January 2012. Retrieved 31 December 2011.
"더불어민주당". 8 March 2023. Archived from the original on 8 March 2023. Retrieved 13 February 2024.

webexhibits.org (Global: 8,331^st place; English: 8,510^th place)

"Pigments through the Ages - History - Ultramarine". WebExhibits. Retrieved 22 April 2023.

wnycstudios.org (Global: low place; English: 9,180^th place)

Tim Howard (20 May 2012). "Why Isn't the Sky Blue?". Radiolab at WNYC Studios (Podcast). Linguist: Guy Deutscher; Professor: Jules Davidoff. Archived from the original on 25 October 2018. Retrieved 27 April 2018.

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

search.worldcat.org

Nakamura, S.; Mukai, T.; Senoh, M. (1994). "Candela-Class High-Brightness InGaN/AlGaN Double-Heterostructure Blue-Light-Emitting-Diodes". Applied Physics Letters. 64 (13): 1687. Bibcode:1994ApPhL..64.1687N. doi:10.1063/1.111832. ISSN 0003-6951.
Sarkar, Anindya; Mukherjee, Arati Deshpande; Bera, M. K.; Das, B.; Juyal, Navin; Morthekai, P.; Deshpande, R. D.; Shinde, V. S.; Rao, L. S. (25 May 2016). "Oxygen isotope in archaeological bioapatites from India: Implications to climate change and decline of Bronze Age Harappan civilization". Scientific Reports. 6 (1) 26555. Bibcode:2016NatSR...626555S. doi:10.1038/srep26555. ISSN 2045-2322. PMC 4879637. PMID 27222033. S2CID 4425978.
DIKSHIT, K.N. (2012). "The Rise of Indian Civilization: Recent Archaeological Evidence from the Plains of 'Lost' River Saraswati and Radio-Metric Dates". Bulletin of the Deccan College Research Institute. 72/73: 1–42. ISSN 0045-9801. JSTOR 43610686.

yougov.com (Global: low place; English: 5,814^th place)

today.yougov.com

"Why is blue the world's favorite color? | YouGov". today.yougov.com. Retrieved 16 April 2023.

Blue (English Wikipedia)

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

chemistry.about.com

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

ui.adsabs.harvard.edu

allaboutbirds.org (Global: 5,612th place; English: 3,734th place)

academy.allaboutbirds.org

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

army.mil (Global: 250th place; English: 134th place)

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

bbc.co.uk (Global: 11th place; English: 10th place)

news.bbc.co.uk

biologists.org (Global: 5,151st place; English: 4,741st place)

jeb.biologists.org

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

boston.com (Global: 468th place; English: 271st place)

archive.boston.com

byu.edu (Global: 1,502nd place; English: 829th place)

theboard.byu.edu

carnby.altervista.org (Global: low place; English: low place)

conservative.ca (Global: low place; English: low place)

delish.com (Global: low place; English: 8,650th place)

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

excnagasi.in (Global: low place; English: low place)

exeter.ac.uk (Global: 6,080th place; English: 3,552nd place)

emps.exeter.ac.uk

ghostarchive.org (Global: 64th place; English: 28th place)

hdl.handle.net (Global: 66th place; English: 34th place)

historicalkits.co.uk (Global: 5,085th place; English: 3,666th place)

indiatimes.com (Global: 31st place; English: 19th place)

jstor.org (Global: 23rd place; English: 15th place)

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

latimes.com (Global: 32nd place; English: 21st place)

nae.edu (Global: 7,974th place; English: 5,060th place)

nd.edu (Global: 2,343rd place; English: 1,280th place)

nih.gov (Global: 5th place; English: 5th place)

pubmed.ncbi.nlm.nih.gov

ncbi.nlm.nih.gov

nytimes.com (Global: 7th place; English: 7th place)

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

patents.google.com (Global: 1,154th place; English: 606th place)

peo.gov.au (Global: low place; English: low place)

researchgate.net (Global: 96th place; English: 89th place)

sanford-artedventures.com (Global: low place; English: low place)

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

api.semanticscholar.org

sgpc.net (Global: low place; English: low place)

old.sgpc.net

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

library.si.edu

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

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

tate.org.uk (Global: 2,085th place; English: 1,423rd place)

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

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

theminjoo.kr (Global: low place; English: low place)

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

ucar.edu (Global: 8,747th place; English: 6,863rd place)

scied.ucar.edu

ucr.edu (Global: 1,400th place; English: 754th place)

math.ucr.edu

ucsb.edu (Global: 1,099th place; English: 630th place)

ssleec.ucsb.edu

news.ucsb.edu

udayton.edu (Global: low place; English: 6,322nd place)

campus.udayton.edu

uj.edu.pl (Global: 1,353rd place; English: 5,595th place)

ruj.uj.edu.pl

usatoday.com (Global: 55th place; English: 36th place)

usc.edu (Global: 1,432nd place; English: 908th place)

today.usc.edu

w3.org (Global: 1,633rd place; English: 1,401st place)

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

webexhibits.org (Global: 8,331st place; English: 8,510th place)

wnycstudios.org (Global: low place; English: 9,180th place)

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

search.worldcat.org

yougov.com (Global: low place; English: 5,814th place)

today.yougov.com

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

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

allaboutbirds.org (Global: 5,612^th place; English: 3,734^th place)

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

army.mil (Global: 250^th place; English: 134^th place)

bbc.co.uk (Global: 11^th place; English: 10^th place)

biologists.org (Global: 5,151^st place; English: 4,741^st place)

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

boston.com (Global: 468^th place; English: 271^st place)

byu.edu (Global: 1,502^nd place; English: 829^th place)

delish.com (Global: low place; English: 8,650^th place)

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

exeter.ac.uk (Global: 6,080^th place; English: 3,552^nd place)

ghostarchive.org (Global: 64^th place; English: 28^th place)

hdl.handle.net (Global: 66^th place; English: 34^th place)

historicalkits.co.uk (Global: 5,085^th place; English: 3,666^th place)

indiatimes.com (Global: 31^st place; English: 19^th place)

jstor.org (Global: 23^rd place; English: 15^th place)

latimes.com (Global: 32^nd place; English: 21^st place)

nae.edu (Global: 7,974^th place; English: 5,060^th place)

nd.edu (Global: 2,343^rd place; English: 1,280^th place)

nih.gov (Global: 5^th place; English: 5^th place)

nytimes.com (Global: 7^th place; English: 7^th place)

patents.google.com (Global: 1,154^th place; English: 606^th place)

researchgate.net (Global: 96^th place; English: 89^th place)

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

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

tate.org.uk (Global: 2,085^th place; English: 1,423^rd place)

ucar.edu (Global: 8,747^th place; English: 6,863^rd place)

ucr.edu (Global: 1,400^th place; English: 754^th place)

ucsb.edu (Global: 1,099^th place; English: 630^th place)

udayton.edu (Global: low place; English: 6,322^nd place)

uj.edu.pl (Global: 1,353^rd place; English: 5,595^th place)

usatoday.com (Global: 55^th place; English: 36^th place)

usc.edu (Global: 1,432^nd place; English: 908^th place)

w3.org (Global: 1,633^rd place; English: 1,401^st place)

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

webexhibits.org (Global: 8,331^st place; English: 8,510^th place)

wnycstudios.org (Global: low place; English: 9,180^th place)

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

yougov.com (Global: low place; English: 5,814^th place)