Henry Perigal | |
|---|---|
 Henry Perigal | |
| Born | 1 April 1801 |
| Died | 6 June 1898 (aged 97) |
| Nationality | British |
| Known for | Pythagorean theorem |
| Scientific career | |
| Fields | Mathematics, Astronomy |
Henry Perigal, Jr. FRAS MRI (1 April 1801 – 6 June 1898) was a British stockbroker and amateur mathematician, known for his dissection-based proof of the Pythagorean theorem and for his unorthodox belief that the moon does not rotate.[1][2][3][4][5][6]
- ^ Frederickson, Greg N. (1997), Dissections: Plane & Fancy, Cambridge University Press, p. 31.
- ^ "Tucker–Oakes Photograph", LMS Newsletter, 391, 2010, archived from the original on 3 April 2012.
- ^ Bayard, Francis Campbell (1898), "Proceedings at the meeting of the society. May 18, 1898. Ordinary Meeting", Quarterly Journal of the Royal Meteorological Society, 24 (108): 261, Bibcode:1898QJRMS..24..261B, doi:10.1002/qj.49702410806.
- ^ Frederickson, Greg N. (1999), A visit to the monument of Henry Perigal.
- ^ "On the dissecting table: Henry Perigal 1801 - 1898", Plus Magazine, 16, December 2000.
- ^ "Obituary Notices : Fellows :- Perigal, Henry", Monthly Notices of the Royal Astronomical Society, 59 (5): 226–228, 1899, Bibcode:1899MNRAS..59R.226., doi:10.1093/mnras/59.5.226a