File:Roger Ekirch 2012.jpg
Size of this preview: 800 × 533 pixels. Other resolutions: 320 × 213 pixels | 640 × 426 pixels | 1,024 × 682 pixels | 1,280 × 852 pixels | 1,622 × 1,080 pixels.
Original file (1,622 × 1,080 pixels, file size: 1.57 MB, MIME type: image/jpeg)
 | This is a file from the Wikimedia Commons. Information from its description page there is shown below. Commons is a freely licensed media file repository. You can help. |
Summary
| Description |
English: Roger Ekirch, photographed 2012 by Tom Cogill. Ekirch is a Professor of History at Virginia Tech. He's well known as the historian who found out that the sleep pattern of humans before the Industrial Revolution and before electric lighting were mostly biphasic: The first sleep ended around midnight and led into an hour or two of leisure, sexual activity, reflection on dreams etc. The term "first sleep" used to be common and is now long forgotten. It appears in diaries, legal documents and high literature such as cervantes' don quijote. Ekirchs best known publication about this subject is "At Day's Close: A History of Nighttime". |
| Date | |
| Source | Tom Cogill, Roger Ekirch |
| Author | Tom Cogill |
Licensing
This file is licensed under the Creative Commons Attribution-Share Alike 4.0 International license.
- You are free:
- to share – to copy, distribute and transmit the work
- to remix – to adapt the work
- Under the following conditions:
- attribution – You must give appropriate credit, provide a link to the license, and indicate if changes were made. You may do so in any reasonable manner, but not in any way that suggests the licensor endorses you or your use.
- share alike – If you remix, transform, or build upon the material, you must distribute your contributions under the same or compatible license as the original.
File history
Click on a date/time to view the file as it appeared at that time.
| Date/Time | Thumbnail | Dimensions | User | Comment | |
|---|---|---|---|---|---|
| current | 19:51, 30 August 2017 | | 1,622 × 1,080 (1.57 MB) | Maximilian Schönherr | User created page with UploadWizard |
File usage
The following page uses this file:
Global file usage
The following other wikis use this file:
- Usage on arz.wikipedia.org
- Usage on de.wikipedia.org
- Usage on es.wikipedia.org
- Usage on www.wikidata.org
