Ole Rømer

Danish astronomer (*1644 – †1710)
Person human Q160187
Ole Rømer
Jacob Coning · Public Domain · Wikimedia
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Ole Rømer

Summary

Ole Rømer is a human[1]. Born in Aarhus[2], he… he was born on September 25, 1644[3]. He died in Copenhagen[4]. He died on September 19, 1710[5]. He worked as an astronomer[6], physicist[7], mathematician[8], university teacher[9], and judge[10]. He ranks in the top 0.72% of human entities by monthly Wikipedia readership (73 views/month, #7,228 of 1,000,298).[11]

Key Facts

  • Born in Aarhus[2], Ole Rømer…
  • Ole Rømer passed away in Copenhagen[4].
  • Ole Rømer was born on September 25, 1644[3].
  • Ole Rømer died on September 19, 1710[5].
  • Ole Rømer was married to Anne Marie Bartholin[12].
  • Ole Rømer held citizenship in Kingdom of Denmark[13].
  • Ole Rømer's professions included astronomer[6].
  • Ole Rømer worked as a physicist[7].
  • Ole Rømer's professions included mathematician[8].
  • Ole Rømer worked as a university teacher[9].
  • Ole Rømer's professions included judge[10].
  • Ole Rømer worked as a patent inventor[14].
  • Ole Rømer's field of work was astronomy[15].
  • Among Ole Rømer's employers was University of Copenhagen[16].
  • Ole Rømer was educated at University of Copenhagen[17].
  • Ole Rømer was educated at Aarhus Katedralskole[18].
  • A notable work attributed to Ole Rømer is Rømer's determination of the speed of light[19].
  • Ole Rømer was a member of French Academy of Sciences[20].
  • Ole Rømer was a member of Royal Prussian Academy of Sciences[21].
  • Ole Rømer's religion is recorded as Lutheranism[22].
  • Ole Rømer is recorded as male[23].
  • Ole Rømer's instance of is recorded as human[24].
  • Ole Rømer's Commons category is recorded as Ole Rømer[25].
  • Ole Rømer's residence is recorded as Copenhagen[26].
  • Ole Rømer's family name is recorded as Rømer[27].

Body

Origins and Family

Ole Rømer's place of birth was Aarhus[2]. He was born on September 25, 1644[3].

Education

Educated at University of Copenhagen[17], a public research university[28], in Denmark[29], founded in 1479[30] and Aarhus Katedralskole[18], a gymnasium[31], in Denmark[32], founded in 1195[33].

Career and Affiliations

Recorded occupations include astronomer[6], physicist[7], mathematician[8], university teacher[9], judge[10], and patent inventor[14]. Ole Rømer's field of work was astronomy[15]. Among his employers was University of Copenhagen[16].

Works and Contributions

A notable work attributed to Ole Rømer is Rømer's determination of the speed of light[19]. Things named for him include Rømer scale[34], a temperature scale[35]; Ole Rømer Observatory[36], an astronomical observatory[37], in Denmark[38]; 2897 Ole Römer[39], an asteroid[40]; Römer[41], an impact crater[42]; and Ole Rømer Medal[43], a science award[44], in Denmark[45].

Personal Life

Among Ole Rømer's spouses was Anne Marie Bartholin[12]. His religion is recorded as Lutheranism[22].

Death and Burial

Ole Rømer died on September 19, 1710[5]. He passed away in Copenhagen[4].

Why It Matters

Ole Rømer ranks in the top 0.72% of human entities by monthly Wikipedia readership (73 views/month, #7,228 of 1,000,298).[11] He has Wikipedia articles in 28 language editions, a strong signal of global cultural recognition.[46] He is known by 82 alternative names across languages and contexts.[47]

He is credited with the discovery of speed of light in vacuum[48], a physical constant[49] and Rømer's determination of the speed of light[50], a Q134348943[51], in France[52]. Entities named for him include Rømer scale[34], a temperature scale[35]; Ole Rømer Observatory[36], an astronomical observatory[37], in Denmark[38]; 2897 Ole Römer[39], an asteroid[40]; Römer[41], an impact crater[42]; and Ole Rømer Medal[43], a science award[44], in Denmark[45].

FAQs

Where was Ole Rømer born?

Born in Aarhus[2], Ole Rømer…

Where did Ole Rømer die?

Ole Rømer died in Copenhagen[4].

Who was Ole Rømer married to?

Ole Rømer's spouses include Anne Marie Bartholin[12].

What did Ole Rømer do for work?

Ole Rømer worked as astronomer[6], physicist[7], mathematician[8], university teacher[9], and judge[10].

Where did Ole Rømer go to school?

Ole Rømer was educated at University of Copenhagen[17] and Aarhus Katedralskole[18].

What did Ole Rømer discover?

Ole Rømer is credited as discoverer of speed of light in vacuum[48] and Rømer's determination of the speed of light[50].

References

Programmatic citations — every numbered marker resolves to a verifiable graph row below.

Direct Wikidata claims

  1. [2] . wikidata.org.
  2. [4] . wikidata.org.
  3. [23] . BnF authorities. Retrieved . wikidata.org.
  4. [12] . wikidata.org.
  5. [13] . BBC Programme Catalogue. wikidata.org.
  6. [24] . BnF authorities. Retrieved . wikidata.org.
  7. [17] . wikidata.org.
  8. [18] . wikidata.org.
  9. [15] . wikidata.org.
  10. [6] . JSTOR. washingtonpost.com. Provenance: wikidata.org.
  11. [7] . wikidata.org.
  12. [8] . wikidata.org.
  13. [9] . wikidata.org.
  14. [10] . wikidata.org.
  15. [14] . adsabs.harvard.edu. adsabs.harvard.edu. Provenance: wikidata.org.
  16. [16] . wikidata.org.
  17. [22] . wikidata.org.
  18. [25] . wikidata.org.
  19. [20] . wikidata.org.
  20. [21] . wikidata.org.
  21. [26] . wikidata.org.
  22. [3] . Integrated Authority File. Retrieved . wikidata.org.
  23. [5] . Integrated Authority File. Retrieved . wikidata.org.
  24. [27] . wikidata.org.
  25. [19] . Retrieved . wikidata.org.

Inverse relationships (entities pointing at this one)

  1. [48] . wikidata.org. → on this site
  2. [50] . wikidata.org. → on this site
  3. [34] . wikidata.org. → on this site
  4. [36] . wikidata.org. → on this site
  5. [39] . wikidata.org. → on this site
  6. [41] . wikidata.org. → on this site
  7. [43] . wikidata.org. → on this site

Inline context (facts about related entities)

  1. [28] . Wikidata. wikidata.org. → on this site
  2. [29] . Wikidata. wikidata.org. → on this site
  3. [30] . Wikidata. wikidata.org. → on this site
  4. [31] . Wikidata. wikidata.org. → on this site
  5. [32] . Wikidata. wikidata.org. → on this site
  6. [33] . Wikidata. wikidata.org. → on this site
  7. [49] . Wikidata. wikidata.org. → on this site
  8. [51] . Wikidata. wikidata.org. → on this site
  9. [52] . Wikidata. wikidata.org. → on this site
  10. [35] . Wikidata. wikidata.org. → on this site
  11. [37] . Wikidata. wikidata.org. → on this site
  12. [38] . Wikidata. wikidata.org. → on this site
  13. [40] . Wikidata. wikidata.org. → on this site
  14. [42] . Wikidata. wikidata.org. → on this site
  15. [44] . Wikidata. wikidata.org. → on this site
  16. [45] . Wikidata. wikidata.org. → on this site

Class ancestry

  1. [1] . Wikidata. wikidata.org.

Aggregate / graph-position facts

  1. [11] . Wikimedia Foundation. dumps.wikimedia.org.
  2. [46] . Wikidata sitelinks. wikidata.org.
  3. [47] . Wikidata aliases. wikidata.org.

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APA 4ort.xyz Knowledge Graph. (2026). Ole Rømer. Retrieved April 10, 2026, from https://4ort.xyz/entity/ole-rmer
MLA “Ole Rømer.” 4ort.xyz Knowledge Graph, 4ort.xyz, 10 Apr. 2026, https://4ort.xyz/entity/ole-rmer.
BibTeX @misc{4ortxyz_ole-rmer_2026, author = {{4ort.xyz Knowledge Graph}}, title = {{Ole Rømer}}, year = {2026}, url = {https://4ort.xyz/entity/ole-rmer}, note = {Accessed: 2026-04-10}}
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  1. 9d ago · Epìdosis · 2026-05-15 view diff on Wikidata ↗
    Cerl thesaurus id cnp00400398
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    "/* wbremoveclaims-remove:1| */ [[Property:P1871]]: cnp00400398, [[:toollabs:quickstatements/#/batch/257929|batch #257929]]"
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