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Gustav Fechner

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2206: 717:. He felt the thrill of life everywhere, in plants, earth, stars, the total universe. Fechner was a panpsychist; he viewed the entire universe as being inwardly alive and consciously animated, instead of being dead “stuff” as accepted by most of his contemporary colleagues, who had become devotees to what was becoming known as material science. Yet he based his panpsychism on a well thought out description of consciousness as waves. He believed that human beings stand midway between the souls of plants and the souls of stars, who are angels. God, the soul of the universe, must be conceived as having an existence analogous to human beings. Natural laws are just the modes of the unfolding of God's perfection. In his last work Fechner, aged but full of hope, contrasts this joyous "daylight view" of the world with the dead, dreary "night view" of 1485: 503: 821:. The conference is now scheduled to include 22 October to allow psychophysicists to celebrate the anniversary of Fechner's waking up on that day in 1850 with a new approach into how to study the mind. Fechner Day runs annually with the 2021 Fechner Day being the 37th. It is organized annually, by a different academic host each year. During the pandemic resulting from COVID-19, Fechner Day was held online in 2020 and 2021. 31: 2187: 328:, where his father, a maternal uncle, and his paternal grandfather were pastors. His mother, Johanna Dorothea Fechner (b. 1774), née Fischer, also came from a religious family. Some biographers consider, that despite these religious influences, Fechner became an atheist in later life., while the anothers says that Fechner had his own religious system as a synthesis of Christianity and paganism. 395:
and its relations with the body, giving public lectures on the subjects dealt with in his books. Whilst lying in bed, Fechner had an insight into the relationship between mental sensations and material sensations. This insight proved to be significant in the development of psychology as there was now
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pointed out that such a law does not account for the fact that perceived relationships among stimuli (e.g., papers coloured black, dark grey, grey, light grey, and white) are unchanged with changes in overall intensity (i.e., in the level of illumination of the papers). He proposed, in his famous
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Fechner constructed ten rectangles with different ratios of width to length and asked numerous observers to choose the "best" and "worst" rectangle shape. He was concerned with the visual appeal of rectangles with different proportions. Participants were explicitly instructed to disregard any
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associations that they have with the rectangles, e.g. with objects of similar ratios. The rectangles chosen as "best" by the largest number of participants and as "worst" by the fewest participants had a ratio of 0.62 (21:34). This ratio is known as the "golden section" (or
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thought that bodily facts and conscious facts, though not reducible one to the other, are different sides of one reality. His originality lies in trying to discover an exact mathematical relation between them. The most famous outcome of his inquiries is the law known as
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One of Fechner's speculations about consciousness dealt with brain. During his time, it was known that the brain is bilaterally symmetrical and that there is a deep division between the two halves that are linked by a connecting band of fibers called the
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In 1861, Fechner reported that if he looked at a light with a darkened piece of glass over one eye then closed that eye, the light appeared to become brighter, even though less light was coming into his eyes. This phenomenon has come to be called
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for a constant that must be separately determined by experiment in each particular order of sensibility. Fechner's reasoning has been criticized on the grounds that although stimuli are composite, sensations are not. "Every sensation," says
633:. It has been the subject of numerous research papers, including in the 2000s. It occurs because the perceived brightness of the light with both eyes open is similar to the average brightness of each light viewed with one eye. 2221: 339:(1799-1861) and three younger sisters: Emilie, Clementine, and Mathilde. Fechner and his brother were then raised for a few years by his maternal uncle—the pastor, before being reunited with his mother and sistes in 599:
However, there has been some ongoing dispute on the experiment itself, as the fact that Fechner deliberately discarded results of the study ill-fitting to his needs became known, with many mathematicians, including
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The law has been found to be immensely useful, but to fail for very faint and for very strong sensations. Within its useful range, Fechner's law is that sensation is a logarithmic function of physical intensity.
653:. His clearest contribution was the demonstration that because the mind was susceptible to measurement and mathematical treatment, psychology had the potential to become a quantified science. Theorists such as 518:, in 1894, enabled English-speakers to learn of the effect through the invention of the spinning top that bears his name, Benham's top. Whether Fechner and Benham ever actually met face to face is not known. 725:
is also important. He conducted experiments to show that certain abstract forms and proportions are naturally pleasing to our senses, and gave some new illustrations of the working of aesthetic association.
620:, to accommodate the asymmetries he had observed in empirical frequency distributions in many fields. The distribution has been independently rediscovered by several authors working in different fields. 362: 112: 571:, two separate streams of consciousness would result - the mind would become two. Yet, Fechner believed that his theory would never be tested; he was incorrect. During the mid-twentieth century, 1979:. Hartshorne also comments that William James failed to do justice to the theological aspects of Fechner's work. Hartshorne saw also resemblances with the work of Fechner's contemporary 1310: 302: 1497: 387:
at Leipzig. But in 1839, he injured his eyes in the research on afterimages by gazing at the Sun through colored glasses, while studying the phenomena of color and
494:, "presents itself as an indivisible unit; and it is quite impossible to read any clear meaning into the notion that they are masses of units combined." 335:, teaching them Latin, and being a passionate grower of fruit. He died unexpectedly in 1806, leaving the family destitute. Fechner had an elder brother, 265:), he inspired many 20th-century scientists and philosophers. He is also credited with demonstrating the non-linear relationship between psychological 776:
Fechner's work continues to have an influence on modern science, inspiring continued exploration of human perceptual abilities by researchers such as
2254: 2351: 530:(1876) he used the method of extreme ranks for subjective judgements. Two years later he published a paper which developed the notion of the 448:"In order that the intensity of a sensation may increase in arithmetical progression, the stimulus must increase in geometrical progression." 2341: 2361: 2356: 2285: 1548: 1506: 367: 117: 1999:, Gazetteer of Planetary Nomenclature, International Astronomical Union (IAU) Working Group for Planetary System Nomenclature (WGPSN) 538:
and attempted to determine the shapes and dimensions of aesthetically pleasing objects, using as a database the sizes of paintings.
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Fechner's father, Samuel Traugott Fischer Fechner (1765-1806) was free-thinking in many ways, for example by having his children be
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Fechner's position in reference to predecessors and contemporaries is not very sharply defined. He was remotely a disciple of
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entitled "To Honor Fechner and Repeal His Law", that intensity of stimulation is related to perception via a power-law.
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Wallis, K.F. (2014). "The two-piece normal, binormal, or double Gaussian distribution: its origin and rediscoveries".
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Campen, Cretien van (1996). De verwarring der zintuigen. Artistieke en psychologische experimenten met synesthesie.
802: 2144: 1806: 514:, whereby colors are seen in a moving pattern of black and white. The English journalist and amateur scientist 2331: 2326: 1790: 762: 2162: 657:
had long stated that this was impossible, and that therefore, a science of psychology was also impossible.
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also admired his work: in 1904, he wrote an admiring introduction to the English translation of Fechner's
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worked on epileptic patients with sectioned corpus callosum and observed that Fechner's idea was correct.
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and is generally credited with introducing the median into the formal analysis of data. He later explored
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Kreuger, L. E. (1993) Personal Communication. ref History of Psychology 4th edition David Hothersal 2004
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Little is known of Fechner's later years, nor of the circumstances, cause, and manner of his death.
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In 1838, he also studied the still-mysterious perceptual illusion of what is still called the
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One or more of the preceding sentences incorporates text from a publication now in the
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The study of medicine also contributed to a loss of religious faith and to becoming atheist.
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Marshall, M E (1969), "Gustav Fechner, Dr. Mises, and the comparative anatomy of angels.",
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In 1871, Fechner reported the first empirical survey of coloured letter photisms among 73
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Robinson, David K. (2010), "Gustav Fechner: 150 years of Elemente der Psychophysik", in
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Das Hauslexicon. Vollständiges Handbuch praktischer Lebenskenntnisse für alle Stände
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Ding, J., & Levi, D. M. (2017). Binocular combination of luminance profiles.
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Levelt, W. J. M. (1965). Binocular brightness averaging and contour information.
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In 1985 the International Society for Psychophysics called its annual conference
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Fechner's general formula for getting at the number of units in any sensation is
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Fechner published chemical and physical papers, and translated chemical works by
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Nature From Within: Gustav Theodor Fechner and his Psychophysical Worldview
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Nature from within: Gustav Theodor Fechner and his Psychophysical Worldview
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read Fechner as a student, and he identified with Fechner when writing his
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10.1002/1520-6696(196901)5:1<39::AID-JHBS2300050105>3.0.CO;2-C
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German experimental psychologist, physicist, and philosopher (1801–1887)
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The Golden Ratio: The Story of Phi, the World's Most Astonishing Number
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Einige Ideen zur Schöpfungs- und Entwickelungsgeschichte der Organismen
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The History of Statistics: The Measurement of Uncertainty before 1900
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Beiser, Frederick C. (2024), Zalta, Edward N.; Nodelman, Uri (eds.),
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a quantitative relationship between the mental and physical worlds.
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Aquinas to Whitehead – Seven Centuries of Metafysics of Religion
1948:, vol. 5, no. 1 (published Jan 1969), pp. 39–58, 616:(1897), Fechner introduced the Zweiseitige Gauss'sche Gesetz or 351: 2186: 531: 436: 416:. He also wrote several poems and humorous pieces, such as the 355: 321: 168: 1805:
Robinson, T. R. (1896). Light intensity and depth perception.
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Erinnerungen an die letzen Tage der Odlehre und ihres Urhebers
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Zend-Avesta oder über die Dinge des Himmels und des Jenseits
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Thinking the Unconscious: Nineteenth-Century German Thought
1438:"Chronological table to the life of Gustav Theodor Fechner" 836:
and of Clementine Wieck Fechner, who was the stepmother of
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British Journal of Mathematical and Statistical Psychology
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and the physical intensity of a stimulus via the formula:
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De variis intensitatem vis Galvanicae metiendi methodis
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from the Classics in the History of Psychology website.
856:("Advances in the general theory of organisms") (1823). 361:
In 1817 Fechner studied medicine for six months at the
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Ueber die physikalische und philosophische Atomenlehre
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Resultate der bis jetzt unternommenen Pflanzenanalysen
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Heidelberger, M. (2001), "Gustav Theodor Fechner" in
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https://dx.doi.org/10.1111/j.2044-8295.1965.tb00939.x
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Sheynin, Oscar (2004), "Fechner as a statistician.",
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Nicholls, Angus; Liebshcher, Martin (24 June 2010).
1719:. Leipzig: Breitkopf & Härtel. pp. 190–202. 1344: 1259:"Gustav Fechner - German psychologist and physicist" 607: 1151:("The three motives and reasons of faith") (1863). 311: 209: 1869: 1424:Fechner, Gustav Theodor at vlp.mpiwg-berlin.mpg.de 1340: 1338: 1336: 710:that he illustrates with the microscope-metaphor. 296: 1973:For Hartshorne's appreciation of Fechner see his 1946:Journal of the History of the Behavioral Sciences 1462:(2nd ed.). (pp. 284-295) Appleton-Century-Crofts. 1345:Michael Heidelberger (2004). "1: Life and Work". 241:; 19 April 1801 – 18 November 1887) was a German 2293: 1688:Inquiries into Human Faculty and Its Development 1546: 550:. His work was followed in the 1880s by that of 2255:Max Planck Institute for the History of Science 2098:Fechner Day 2023 - Patrizio Paoletti Foundation 1333: 1429: 1349:. University of Pittsburgh Press. p. 21. 2247:Biography, bibliography and digitized sources 1785: 1783: 888:("Protective equipment for cholera") (1832). 1842:(Winter 2011 Edition), Edward N. Zalta (ed.) 1046:Nanna oder über das Seelenleben der Pflanzen 879:Maassbestimmungen über die galvanische Kette 582: 485:for the stimulus numerically estimated, and 426: 1876:. Cambridge University Press. p. 272. 1637: 1596: 1520:Schultz, P.D., & Schultz, S.E. (2008). 1435: 1210:Die Tagesansicht gegenüber der Nachtansicht 809:on the far side of the Moon after Fechner. 668:was inspired by his work on psychophysics. 497: 1780: 1736:(1st ed.). New York: Broadway Books. 1678: 1577:. Leipzig: Breitkopf und Hartel. Website: 1527: 854:Praemissae ad theoriam organismi generalem 29: 2161:, Vol 13(4), Nov 2010, pp. 409–410. 2143:(trans. Cynthia Klohr), Pittsburgh, PA: 1684: 1669: 1628: 1478: 1476: 1474: 1472: 1470: 1468: 1226:Revision der Hauptpuncte der Psychophysik 604:, refuting the result of the experiment. 1943: 1643: 1602: 1038:("Concerning the Highest Good") (1846). 824: 557: 501: 1852: 1840:The Stanford Encyclopedia of Philosophy 1714: 1379:The Stanford Encyclopedia of Philosophy 1307: 1282: 1149:Die drei Motive und Gründe des Glaubens 420:(1825), written under the pseudonym of 363:Medizinische Akademie Carl Gustav Carus 113:Medizinische Akademie Carl Gustav Carus 2294: 1465: 1372: 383:In 1834 he was appointed professor of 1983:. See also: Hartshorne – Reese (ed.) 1896: 1729: 1495: 444:, which may be expressed as follows: 236: 2352:Academic staff of Leipzig University 2069:"Fechner Day 2017 — Welcome (index)" 1460:A history of experimental psychology 953:Das Büchlein vom Leben nach dem Tode 730:saw him as a predecessor on his and 623: 431:Fechner's epoch-making work was his 2342:People from the Province of Silesia 2271:The Little Book of Life after Death 1404:Stanford Encyclopedia of Philosophy 1003:The Little Book of Life After Death 832:Fechner was the brother of painter 713:Fechner's world concept was highly 13: 2362:19th-century German mathematicians 2357:People educated at the Kreuzschule 2115: 1827:https://dx.doi.org/10.1167/17.13.4 1811:https://dx.doi.org/10.2307/1411847 1397: 899:Repertorium der Experimentalphysik 840:when Clementine became her father 660:Though he had a vast influence on 14: 2388: 2224:at Projekt Gutenberg-DE. (German) 2179: 1537:(1921), Pt II Ch XVII §5 (p 201). 796: 608:The two-piece normal distribution 596:was a participant in this study. 567:. Fechner speculated that if the 2207:Works by or about Gustav Fechner 2185: 1483: 1127:("Concerning the Soul") (1861). 1096:Professor Schleiden und der Mond 803:International Astronomical Union 674:Büchlein vom Leben nach dem Tode 418:Vergleichende Anatomie der Engel 399: 312:Early life and scientific career 205: 2198:Works by Gustav Theodor Fechner 2086: 2061: 2036: 2018: 2002: 1990: 1967: 1937: 1924: 1890: 1863: 1846: 1831: 1815: 1799: 1758: 1723: 1708: 1702: 1583: 1567: 1551:. /statprob.com. Archived from 1540: 1524:(pp. 81-82).Thompson Wadsworth. 1522:A History of Modern Psychology. 1514: 678:Little Book of Life After Death 2145:University of Pittsburgh Press 2132:) pp. 142–147. New York: 2123:Statisticians of the Centuries 1807:American Journal of Psychology 1591:Psychologie & Maatschappij 1452: 1417: 1391: 1366: 1301: 1276: 1251: 812: 612:In his posthumously published 541: 346:Fechner was educated first at 261:(techniques for measuring the 1: 2262:Founders of modern psychology 1932:Freud: Biologist of the Mind. 1853:Harland, Michael Lee (2019). 1791:British Journal of Psychology 1244: 618:two-piece normal distribution 521: 2277:Gustav Theodor Fechner 1908 2268:Gustav Theodor Fechner 1904 2167:Stigler, Stephen M. (1986), 1903:The Interpretation of Dreams 1838:Pojman, Paul, "Ernst Mach", 1593:, vol. 20, nr. 1, pp. 10–26. 1496:Sturt, Henry Cecil (1911). " 886:Schutzmittel für die Cholera 708:The Interpretation of Dreams 636: 435:(1860). He started from the 304:, which became known as the 7: 1930:Sulloway, Frank J. (1979). 1221:Internet Archive (Stanford) 1205:Internet Archive (Stanford) 1091:Internet Archive (Stanford) 1040:Internet Archive (Stanford) 874:Internet Archive (Stanford) 702:Furthermore, he influenced 506:A sample of a Benham's disk 10: 2393: 2377:Quantitative psychologists 2337:Experimental psychologists 1436:Meischner-Metge, Anneros. 1230:Internet Archive (Harvard) 1201:In Sachen der Psychophysik 1196:Internet Archive (Harvard) 1065:Internet Archive (Harvard) 961:Internet Archive (Harvard) 865:Internet Archive (Harvard) 791: 569:corpus callosum were split 481:stands for the sensation, 2347:Leipzig University alumni 2274:Foreword by William James 2265:p. 125ff archive.org 2240:Elemente der Psychophysik 2230:Elements of Psychophysics 2139:Heidelberger, M. (2004), 1985:Philosophers speak of God 1934:(pp. 66-67). Basic Books. 1535:A Treatise on Probability 1105:Elemente der Psychophysik 1031:Internet Archive (Oxford) 939:Internet Archive (Oxford) 926:Internet Archive (Oxford) 913:Internet Archive (Oxford) 761:, and decidedly rejected 583:Golden section hypothesis 433:Elemente der Psychophysik 427:Elemente der Psychophysik 194: 184: 167: 157: 147: 140: 130: 108: 100: 74: 37: 28: 21: 2216:William James on Fechner 2173:Harvard University Press 1715:Fechner, Gustav (1876). 1549:"Gustav Theodor Fechner" 1400:"Gustav Theodor Fechner" 1375:"Gustav Theodor Fechner" 1178:Internet Archive (UMich) 1166:Internet Archive (UMich) 1137:Internet Archive (UMich) 1058:Internet Archive (UMich) 988:Internet Archive (UMich) 847: 759:Christian Hermann Weisse 751:Johann Friedrich Herbart 498:The Fechner color effect 297:{\displaystyle S=K\ln I} 2312:People from Żary County 2259:Granville Stanley 1912 2030:www.ispsychophysics.org 1575:Vorschule der Aesthetik 1507:Encyclopædia Britannica 1498:Fechner, Gustav Theodor 1320:10.1348/000711004849196 1283:Fancher, R. E. (1996). 1263:Encyclopedia Britannica 1239:Internet Archive (NYPL) 1192:Vorschule der Aesthetik 1157:Internet Archive (NYPL) 1133:Internet Archive (UCal) 1129:Internet Archive (NYPL) 1120:Internet Archive (NYPL) 1011:Internet Archive (UCal) 965:Internet Archive (NYPL) 935:Internet Archive (NYPL) 922:Internet Archive (NYPL) 909:Internet Archive (NYPL) 536:experimental aesthetics 528:Vorschule der Aesthetik 255:experimental psychology 152:Experimental psychology 2286:Gustav Theodor Fechner 2222:Gustav Theodor Fechner 2192:Gustav Theodor Fechner 1717:Vorschule der Ästhetik 1547:Michael Heidelberger. 1533:Keynes, John Maynard; 1458:Boring, E. G. (1950). 1285:Pioneers of Psychology 834:Eduard Clemens Fechner 732:Alfred North Whitehead 507: 337:Eduard Clemens Fechner 298: 201:Gustav Theodor Fechner 42:Gustav Theodor Fechner 2159:History of Psychology 2048:fechnerdays Webseite! 1730:Livio, Mario (2002). 1646:"Visualized Numerals" 1605:"Visualized Numerals" 1398:Beiser, Frederick C. 1125:Ueber die Seelenfrage 1036:Ueber das höchste Gut 949:(1834–38). 8 volumes. 825:Family and later life 697:Das Lied von der Erde 647:Hermann von Helmholtz 558:Corpus callosum split 505: 410:Louis Jacques Thénard 378:University of Leipzig 376:and from 1818 at the 299: 2332:German psychologists 2327:German statisticians 2236:Robert H. Wozniak's 2194:at Wikimedia Commons 1440:. Leipzig University 771:Rudolf Hermann Lotze 741:, learned much from 721:. Fechner's work in 641:Fechner, along with 512:Fechner color effect 316:Fechner was born at 273: 2175:, pp. 242–254. 2032:. 21 November 2017. 1825:, 17(13, 4), 1-32. 1767:Statistical Science 1662:1880Natur..21..252G 1621:1880Natur..21..494G 1573:Fechner, G. (1876) 1194:(1876). 2 Volumes. 1107:(1860). 2 volumes. 1072:(1851). 3 volumes. 973:On Life After Death 901:(1832). 3 volumes. 755:Arthur Schopenhauer 249:, and experimental 2251:Virtual Laboratory 2094:"Fechner Day 2023" 2044:"FECHNER DAY 2018" 1685:Galton F. (1883). 1235:Kollektivmasslehre 1113:Google (ULausanne) 728:Charles Hartshorne 614:Kollektivmasslehre 508: 406:Jean-Baptiste Biot 294: 162:Leipzig University 124:Leipzig University 2322:German Christians 2202:Project Gutenberg 2190:Media related to 2171:, Cambridge, MA: 1917:978-0-486-78942-2 1900:(18 March 2015). 1823:Journal of Vision 1644:Galton F (1880). 1603:Galton F (1880). 1218: 1141: 1117: 1110: 1088: 1075: 1062: 1055: 1051: 992: 985: 958: 932: 919: 906: 631:Fechner's paradox 624:Fechner's paradox 577:Michael Gazzaniga 306:Weber–Fechner law 198: 197: 142:Scientific career 135:Weber–Fechner law 68:Holy Roman Empire 2384: 2238:Introduction to 2211:Internet Archive 2189: 2109: 2108: 2106: 2104: 2090: 2084: 2083: 2081: 2079: 2065: 2059: 2058: 2056: 2054: 2040: 2034: 2033: 2022: 2016: 2006: 2000: 1994: 1988: 1971: 1965: 1964: 1941: 1935: 1928: 1922: 1921: 1906:. Translated by 1894: 1888: 1887: 1867: 1861: 1860: 1850: 1844: 1835: 1829: 1819: 1813: 1803: 1797: 1787: 1778: 1762: 1756: 1755: 1727: 1721: 1720: 1712: 1706: 1700: 1699: 1697: 1696: 1682: 1676: 1675: 1673: 1671:10.1038/021252a0 1641: 1635: 1634: 1632: 1630:10.1038/021494e0 1600: 1594: 1587: 1581: 1571: 1565: 1564: 1562: 1560: 1544: 1538: 1531: 1525: 1518: 1512: 1511: 1489: 1487: 1486: 1480: 1463: 1456: 1450: 1449: 1447: 1445: 1433: 1427: 1421: 1415: 1414: 1412: 1410: 1395: 1389: 1388: 1387: 1386: 1370: 1364: 1363: 1342: 1331: 1330: 1305: 1299: 1298: 1280: 1274: 1273: 1271: 1269: 1255: 1216: 1187:Google (Harvard) 1173:Kleine Schriften 1153:Google (Harvard) 1144:Google (Harvard) 1139: 1115: 1108: 1086: 1078:Google (Harvard) 1073: 1060: 1053: 1049: 1001: 990: 983: 971: 956: 930: 917: 904: 890:Google (Harvard) 844:'s second wife. 371: 303: 301: 300: 295: 240: 238:[ˈfɛçnɐ] 235: 231: 230: 227: 226: 223: 220: 217: 214: 211: 185:Notable students 180: 121: 81: 78:18 November 1887 51: 49: 33: 19: 18: 2392: 2391: 2387: 2386: 2385: 2383: 2382: 2381: 2372:Plant cognition 2317:German atheists 2292: 2291: 2288:at statprob.com 2280:The Living Word 2182: 2134:Springer Verlag 2118: 2116:Further reading 2113: 2112: 2102: 2100: 2092: 2091: 2087: 2077: 2075: 2067: 2066: 2062: 2052: 2050: 2042: 2041: 2037: 2024: 2023: 2019: 2007: 2003: 1995: 1991: 1972: 1968: 1942: 1938: 1929: 1925: 1918: 1895: 1891: 1884: 1868: 1864: 1851: 1847: 1836: 1832: 1820: 1816: 1804: 1800: 1788: 1781: 1763: 1759: 1744: 1728: 1724: 1713: 1709: 1703: 1694: 1692: 1683: 1679: 1642: 1638: 1601: 1597: 1588: 1584: 1572: 1568: 1558: 1556: 1555:on 4 March 2016 1545: 1541: 1532: 1528: 1519: 1515: 1484: 1482: 1481: 1466: 1457: 1453: 1443: 1441: 1434: 1430: 1422: 1418: 1408: 1406: 1396: 1392: 1384: 1382: 1371: 1367: 1357: 1343: 1334: 1306: 1302: 1295: 1281: 1277: 1267: 1265: 1257: 1256: 1252: 1247: 1214:Google (Oxford) 999: 977:Google (Oxford) 969: 850: 842:Friedrich Wieck 827: 815: 799: 794: 689:Second Symphony 639: 626: 610: 585: 565:corpus callosum 560: 544: 524: 500: 473: log  429: 402: 365: 314: 274: 271: 270: 257:and founder of 253:. A pioneer in 233: 208: 204: 178: 122: 115: 96: 83: 79: 70: 53: 47: 45: 44: 43: 24: 17: 12: 11: 5: 2390: 2380: 2379: 2374: 2369: 2364: 2359: 2354: 2349: 2344: 2339: 2334: 2329: 2324: 2319: 2314: 2309: 2304: 2290: 2289: 2283: 2275: 2266: 2257: 2244: 2234: 2225: 2218: 2213: 2204: 2195: 2181: 2180:External links 2178: 2177: 2176: 2165: 2155: 2137: 2117: 2114: 2111: 2110: 2085: 2073:fechnerday.com 2060: 2035: 2017: 2001: 1989: 1966: 1936: 1923: 1916: 1898:Freud, Sigmund 1889: 1882: 1862: 1845: 1830: 1814: 1809:, 7, 518-532. 1798: 1779: 1757: 1742: 1722: 1707: 1701: 1677: 1656:(533): 252–6. 1636: 1615:(543): 494–5. 1595: 1582: 1566: 1539: 1526: 1513: 1502:Chisholm, Hugh 1464: 1451: 1428: 1416: 1390: 1365: 1355: 1332: 1300: 1293: 1275: 1249: 1248: 1246: 1243: 1242: 1241: 1232: 1223: 1207: 1198: 1189: 1180: 1168: 1159: 1146: 1122: 1102: 1100:Google (UMich) 1093: 1080: 1067: 1042: 1033: 1023: 1022: 1021: 997: 995:IA (UIllinois) 950: 943: 942: 941: 928: 915: 896: 894:Google (UWisc) 882: 876: 867: 861:Stapelia mixta 857: 849: 846: 826: 823: 814: 811: 807:Fechner crater 798: 797:Fechner Crater 795: 793: 790: 788:, and others. 778:Jan Koenderink 763:G. W. F. Hegel 743:Baruch Spinoza 638: 635: 625: 622: 609: 606: 584: 581: 559: 556: 552:Francis Galton 543: 540: 523: 520: 516:Charles Benham 499: 496: 450: 449: 428: 425: 401: 398: 313: 310: 293: 290: 287: 284: 281: 278: 196: 195: 192: 191: 186: 182: 181: 171: 165: 164: 159: 155: 154: 149: 145: 144: 138: 137: 132: 131:Known for 128: 127: 110: 106: 105: 102: 98: 97: 84: 82:(aged 86) 76: 72: 71: 54: 41: 39: 35: 34: 26: 25: 23:Gustav Fechner 22: 15: 9: 6: 4: 3: 2: 2389: 2378: 2375: 2373: 2370: 2368: 2365: 2363: 2360: 2358: 2355: 2353: 2350: 2348: 2345: 2343: 2340: 2338: 2335: 2333: 2330: 2328: 2325: 2323: 2320: 2318: 2315: 2313: 2310: 2308: 2305: 2303: 2300: 2299: 2297: 2287: 2284: 2282: 2281: 2276: 2273: 2272: 2267: 2264: 2263: 2258: 2256: 2252: 2248: 2245: 2243: 2241: 2235: 2232: 2231: 2227:Excerpt from 2226: 2223: 2219: 2217: 2214: 2212: 2208: 2205: 2203: 2199: 2196: 2193: 2188: 2184: 2183: 2174: 2170: 2166: 2164: 2160: 2156: 2154: 2153:0-822-9421-00 2150: 2146: 2142: 2138: 2135: 2131: 2128: 2124: 2120: 2119: 2099: 2095: 2089: 2074: 2070: 2064: 2049: 2045: 2039: 2031: 2027: 2021: 2015: 2014:9780072849653 2011: 2005: 1998: 1993: 1986: 1982: 1981:Jules Lequier 1978: 1977: 1970: 1963: 1959: 1955: 1951: 1947: 1940: 1933: 1927: 1919: 1913: 1909: 1905: 1904: 1899: 1893: 1885: 1883:9780521897532 1879: 1875: 1874: 1866: 1858: 1857: 1849: 1843: 1841: 1834: 1828: 1824: 1818: 1812: 1808: 1802: 1796: 1792: 1786: 1784: 1777: 1773: 1769: 1768: 1761: 1753: 1749: 1745: 1743:0-7679-0815-5 1739: 1735: 1734: 1726: 1718: 1711: 1705: 1690: 1689: 1681: 1672: 1667: 1663: 1659: 1655: 1651: 1647: 1640: 1631: 1626: 1622: 1618: 1614: 1610: 1606: 1599: 1592: 1586: 1580: 1576: 1570: 1554: 1550: 1543: 1536: 1530: 1523: 1517: 1509: 1508: 1503: 1499: 1493: 1492:public domain 1479: 1477: 1475: 1473: 1471: 1469: 1461: 1455: 1439: 1432: 1425: 1420: 1405: 1401: 1394: 1380: 1376: 1369: 1362: 1358: 1356:9780822970774 1352: 1348: 1341: 1339: 1337: 1329: 1325: 1321: 1317: 1313: 1312: 1304: 1296: 1294:0-393-96994-0 1290: 1286: 1279: 1264: 1260: 1254: 1250: 1240: 1236: 1233: 1231: 1227: 1224: 1222: 1215: 1211: 1208: 1206: 1202: 1199: 1197: 1193: 1190: 1188: 1184: 1181: 1179: 1175: 1174: 1169: 1167: 1163: 1160: 1158: 1154: 1150: 1147: 1145: 1138: 1134: 1130: 1126: 1123: 1121: 1114: 1106: 1103: 1101: 1097: 1094: 1092: 1084: 1081: 1079: 1071: 1068: 1066: 1059: 1047: 1043: 1041: 1037: 1034: 1032: 1028: 1024: 1020: 1019:IA (UToronto) 1016: 1012: 1008: 1007:IA (UToronto) 1004: 998: 996: 989: 982: 981:IA (UToronto) 978: 974: 968: 967: 966: 962: 954: 951: 948: 944: 940: 936: 929: 927: 923: 916: 914: 910: 903: 902: 900: 897: 895: 891: 887: 883: 880: 877: 875: 871: 868: 866: 862: 858: 855: 852: 851: 845: 843: 839: 835: 830: 822: 820: 810: 808: 804: 801:In 1970, the 789: 787: 783: 782:Farley Norman 779: 774: 772: 768: 764: 760: 756: 752: 748: 747:G. W. Leibniz 744: 740: 735: 733: 729: 724: 720: 716: 711: 709: 705: 704:Sigmund Freud 700: 698: 694: 690: 686: 685:Gustav Mahler 683:The composer 681: 679: 675: 671: 670:William James 667: 663: 662:psychophysics 658: 656: 655:Immanuel Kant 652: 648: 644: 643:Wilhelm Wundt 634: 632: 621: 619: 615: 605: 603: 597: 595: 591: 580: 578: 574: 570: 566: 555: 553: 549: 539: 537: 533: 529: 519: 517: 513: 504: 495: 493: 492:William James 488: 484: 480: 476: 472: 468: 463: 461: 456: 455:S. S. Stevens 447: 446: 445: 443: 442:Fechner's Law 438: 434: 424: 423: 419: 415: 411: 407: 400:Contributions 397: 394: 390: 386: 381: 379: 375: 369: 364: 359: 357: 353: 349: 344: 342: 338: 334: 329: 327: 326:Lower Lusatia 323: 319: 309: 307: 291: 288: 285: 282: 279: 276: 268: 264: 260: 259:psychophysics 256: 252: 248: 244: 239: 229: 202: 193: 190: 189:Hermann Lotze 187: 183: 176: 172: 170: 166: 163: 160: 156: 153: 150: 146: 143: 139: 136: 133: 129: 125: 119: 114: 111: 107: 103: 99: 95: 94:German Empire 91: 87: 77: 73: 69: 65: 61: 57: 52:19 April 1801 40: 36: 32: 27: 20: 2279: 2270: 2261: 2239: 2229: 2168: 2158: 2140: 2122: 2101:. Retrieved 2097: 2088: 2076:. Retrieved 2072: 2063: 2051:. Retrieved 2047: 2038: 2029: 2020: 2004: 1992: 1984: 1975: 1969: 1945: 1939: 1931: 1926: 1902: 1892: 1872: 1865: 1855: 1848: 1839: 1833: 1817: 1801: 1793:, 56, 1-13. 1765: 1760: 1732: 1725: 1716: 1710: 1704: 1693:. Retrieved 1687: 1680: 1653: 1649: 1639: 1612: 1608: 1598: 1590: 1585: 1574: 1569: 1557:. Retrieved 1553:the original 1542: 1534: 1529: 1521: 1516: 1505: 1459: 1454: 1442:. Retrieved 1431: 1419: 1407:. Retrieved 1403: 1393: 1383:, retrieved 1378: 1368: 1360: 1346: 1309: 1303: 1284: 1278: 1266:. Retrieved 1262: 1253: 1234: 1225: 1209: 1200: 1191: 1182: 1171: 1170:(Dr. Mises) 1161: 1148: 1124: 1104: 1095: 1082: 1069: 1045: 1044:(Dr. Mises) 1035: 1026: 1025:(Dr. Mises) 1002: 1000:(in English) 972: 970:(in English) 952: 946: 898: 885: 884:(Dr. Mises) 878: 869: 860: 859:(Dr. Mises) 853: 831: 828: 818: 816: 800: 786:David Heeger 775: 736: 712: 707: 701: 682: 677: 673: 659: 640: 630: 627: 613: 611: 598: 590:golden ratio 586: 573:Roger Sperry 561: 545: 527: 525: 509: 486: 482: 478: 474: 470: 466: 464: 451: 441: 432: 430: 422:"Dr. Mises." 421: 417: 403: 382: 360: 345: 330: 318:Groß Särchen 315: 251:psychologist 200: 199: 173: 158:Institutions 141: 80:(1887-11-18) 56:Groß Särchen 2367:Panpsychism 2307:1887 deaths 2302:1801 births 2163:APA PsycNet 2127:C. C. Heyde 1908:A. A. Brill 1691:. Macmillan 838:Clara Wieck 819:Fechner Day 813:Fechner Day 719:materialism 602:Mario Livio 594:Carl Stumpf 548:synesthetes 542:Synesthesia 366: [ 354:in Western 247:philosopher 126:(PhD, 1835) 116: [ 101:Nationality 2296:Categories 2078:18 January 2053:18 January 1695:2008-06-17 1579:chuoft.pdf 1385:2024-09-07 1268:18 January 1245:References 805:named the 723:aesthetics 666:Ernst Mach 651:psychology 522:The median 460:1961 paper 333:vaccinated 48:1801-04-19 2220:Works of 2130:E. 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Index


Groß Särchen
Muskau
Saxony
Holy Roman Empire
Leipzig
Saxony
German Empire
Medizinische Akademie Carl Gustav Carus
de
Leipzig University
Weber–Fechner law
Experimental psychology
Leipzig University
Thesis
De variis intensitatem vis Galvanicae metiendi methodis  (1835)Notable studentsHermann Lotze
/ˈfɛxnər/
[ˈfɛçnɐ]
physicist
philosopher
psychologist
experimental psychology
psychophysics
mind
sensation
Weber–Fechner law
Groß Särchen
Muskau
Lower Lusatia
vaccinated

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