“In order that the intensity of a sensation may increase in arithmetical progression, the stimulus must increase in geometrical progression.”
Text from Wikiquote, available under CC BY-SA 4.0.
- #wikiquote
- #quote

Figure timeline
Gustav Theodor Fechner was a German physicist, philosopher, and experimental psychologist. A pioneer in experimental psychology and founder of psychophysics, he inspired many 20th-century scientists and philosophers. He is also credited with demonstrating the non-linear relationship between psychological sensation and the physical intensity of a stimulus via the formula: , which became known as th…
Text from Wikipedia, available under CC BY-SA 4.0.
science · German experimental psychologist, physicist, and philosopher (1801–1887) · physicist · psychologist · statistician · university teacher · philosopher · translator · writer · psychophysiologist · physician · also Gustav Fechner, Gustav Theodor Fechner, Fechner
Born 19 April 1801 · Died 18 November 1887 · Q76881
18 published statements · 0 followers
See & hear
1 photos
Media from Wikimedia Commons, hotlinked at the source under its own licence — see each file for author and terms.
Live now
Pulling headlines from trusted outlets — this usually takes a few seconds
Checking the wires…
Feed scan
These are live links, not archived citations — they only join the timeline once a collect run verifies and archives them.
Live pulse
Most recent outstanding titles, awards, and quotes
s Büchlein vom Leben nach dem Tode (Little Book of Life After Death). The composer Gustav Mahler read Fechner as a student, and he identified with Fechner when writing his Second Symphony, his Third, and Das Lied von der Erde. Furthermore, he influenced Sigmund Freud, who refers to Fechner when introducing the concept of psychic locality in his The Interpretation of Dreams that he illustrates with the microscope-metaphor. Fechner
76%Wikipedia
“In order that the intensity of a sensation may increase in arithmetical progression, the stimulus must increase in geometrical progression.”
Text from Wikiquote, available under CC BY-SA 4.0.
Published “An Interaction between Kynurenine and the Aryl Hydrocarbon Receptor Can Generate Regulatory T Cells” in The Journal of Immunology — cited 1,422 times.
The International Society for Psychophysics called its annual conference Fechner Day
Text from Wikipedia, available under CC BY-SA 4.0.
The International Astronomical Union named the Fechner crater on the far side of the Moon after Fechner
Text from Wikipedia, available under CC BY-SA 4.0.
Wrote an admiring introduction to the English translation of Fechner's Büchlein vom Leben nach dem Tode (Little Book of Life After Death)
Text from Wikipedia, available under CC BY-SA 4.0.
“s Büchlein vom Leben nach dem Tode (Little Book of Life After Death). The composer Gustav Mahler read Fechner as a student, and he identified with Fechner when writing his Second Symphony, his Third, and Das Lied von der Erde. Furthermore, he influenced Sigmund Freud, who refers to Fechner when introducing the concept of psychic locality in his The Interpretation of Dreams that he illustrates with the microscope-metaphor. Fechner”
Text from Wikipedia, available under CC BY-SA 4.0.
Enabled English-speakers to learn of the effect through the invention of the spinning top that bears his name, Benham's top
Text from Wikipedia, available under CC BY-SA 4.0.
Died 1887-11-18.
Text from Wikipedia, available under CC BY-SA 4.0.
Awarded honorary citizen of Leipzig (1884).
Text from Wikipedia, available under CC BY-SA 4.0.
Fechner reported the first empirical survey of coloured letter photisms among 73 synesthetes
Text from Wikipedia, available under CC BY-SA 4.0.
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
Text from Wikipedia, available under CC BY-SA 4.0.
With a new approach into how to study the mind
Text from Wikipedia, available under CC BY-SA 4.0.
Awarded honorary member of the Physics Association (Frankfurt am Main, Germany) (1839).
Text from Wikipedia, available under CC BY-SA 4.0.
Injured his eyes in the research on afterimages by gazing at the Sun through colored glasses, while studying the phenomena of color and vision, and after much suffering, resigned from his position
Text from Wikipedia, available under CC BY-SA 4.0.
Also studied the still-mysterious perceptual illusion of what is still called the Fechner color effect, whereby colors are seen in a moving pattern of black and white
Text from Wikipedia, available under CC BY-SA 4.0.
Was appointed professor of physics at Leipzig
Text from Wikipedia, available under CC BY-SA 4.0.
Fechner studied medicine for six months at the Medizinische Akademie Carl Gustav Carus in Dresden and from 1818 at the University of Leipzig, the city in which he spent the rest of his life
Text from Wikipedia, available under CC BY-SA 4.0.
Born 1801-04-19.
Text from Wikipedia, available under CC BY-SA 4.0.
Connections