File:Tractatus Georgi Peurbachii super propositiones Ptolemaei de sinubus & chordis.agr.jpg
Original file (3,024 × 3,460 pixels, file size: 6.65 MB, MIME type: image/jpeg)
Captions
Summary
[edit]DescriptionTractatus Georgi Peurbachii super propositiones Ptolemaei de sinubus & chordis.agr.jpg |
English: Close up of a page from Peurbach's trigonometric table on display at the Computer History Museum. From CHM, display label: "Peurbach, Georg and Regiomontanus, Tractatus Georgi Peurbachii super propositiones Ptolemaei de sinubus & chordis, Johann Petreius, Germany, 1468 (1541 edition)
Peurbach's may be the oldest surviving printed mathematical tables. Loan of Gwen and Gordon Bell, B333.85" The Sinus values in the table are based on a circle of radius 60 and, taken as a decimal fraction, are 60/100ths of the modern sine function for the angle shown. Thus the value printed in the upper-left corner, .3856796, is equal to 0.6 × sin(40°), rounded to seven decimal places. See w:Ptolemy's table of chords for a description of this practice. The narrow columns give the change in sinus value per arc second, in units and tenths, for interpolation. |
Date | (original 1541) |
Source | Own work, work photographed was published in 1541 and is therefore out of copyright |
Author | ArnoldReinhold |
Other versions | File:Tractatus Georgi Peurbachii super propositiones Ptolemaei de sinubus & chordis close.agr.jpg |
Camera location | 37° 24′ 51.34″ N, 122° 04′ 39.74″ W | View this and other nearby images on: OpenStreetMap | 37.414261; -122.077706 |
---|
Licensing
[edit]- 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 | 19:54, 8 March 2022 | 3,024 × 3,460 (6.65 MB) | ArnoldReinhold (talk | contribs) | Uploaded own work with UploadWizard |
You cannot overwrite this file.
File usage on Commons
There are no pages that use this file.
File usage on other wikis
The following other wikis use this file:
- Usage on en.wikipedia.org
Metadata
This file contains additional information such as Exif metadata which may have been added by the digital camera, scanner, or software program used to create or digitize it. If the file has been modified from its original state, some details such as the timestamp may not fully reflect those of the original file. The timestamp is only as accurate as the clock in the camera, and it may be completely wrong.
Camera manufacturer | Apple |
---|---|
Camera model | iPhone 11 Pro |
Exposure time | 1/60 sec (0.016666666666667) |
F-number | f/1.8 |
ISO speed rating | 160 |
Date and time of data generation | 14:23, 21 February 2022 |
Lens focal length | 4.25 mm |
Latitude | 37° 24′ 51.34″ N |
Longitude | 122° 4′ 39.74″ W |
Altitude | 12.071 meters above sea level |
Short title |
|
Orientation | Normal |
Horizontal resolution | 72 dpi |
Vertical resolution | 72 dpi |
Software used | 15.2.1 |
File change date and time | 14:23, 21 February 2022 |
Y and C positioning | Centered |
Exposure Program | Normal program |
Exif version | 2.32 |
Date and time of digitizing | 14:23, 21 February 2022 |
Meaning of each component |
|
APEX shutter speed | 5.9073811931244 |
APEX aperture | 1.6959938128384 |
APEX brightness | 2.5827729334921 |
APEX exposure bias | 0 |
Metering mode | Pattern |
Flash | Flash did not fire, compulsory flash suppression |
DateTime subseconds | 110 |
DateTimeOriginal subseconds | 110 |
DateTimeDigitized subseconds | 110 |
Supported Flashpix version | 1 |
Color space | Uncalibrated |
Sensing method | One-chip color area sensor |
Scene type | A directly photographed image |
Exposure mode | Auto exposure |
White balance | Auto white balance |
Focal length in 35 mm film | 26 mm |
Scene capture type | Standard |
Speed unit | Kilometers per hour |
Speed of GPS receiver | 0 |
Reference for direction of image | Magnetic direction |
Direction of image | 131.93626404894 |
Reference for bearing of destination | Magnetic direction |
Bearing of destination | 131.93626404894 |
IIM version | 2 |