Arie Andries Kruithof (1909 in

Zeist Zeist () is the Capital city, capital and largest town of the Zeist (municipality), municipality of Zeist. The town is located in the Utrecht (province), Utrecht province of the Netherlands, east of the city of Utrecht. History The town of " ...

(NL) – 1993 in

Son en Breugel Son en Breugel () is a Municipalities of the Netherlands, municipality in the southern Netherlands just outside Eindhoven. The municipality covers an area of of which is water. It had a population of in . Son en Breugel used to be two different ...

(NL)) was a Dutch professor of

applied physics Applied physics is the application of physics to solve scientific or engineering problems. It is usually considered a bridge or a connection between physics and engineering. "Applied" is distinguished from "pure" by a subtle combination of fac ...

Eindhoven University of Technology The Eindhoven University of Technology (), Abbreviation, abbr. TU/e, is a public university, public technical university in the Netherlands, situated in Eindhoven. In 2020–21, around 14,000 students were enrolled in its Bachelor of Science, BS ...

(Netherlands). Kruithof studied physics at

Utrecht University Utrecht University (UU; , formerly ''Rijksuniversiteit Utrecht'') is a public university, public research university in Utrecht, Netherlands. Established , it is one of the oldest universities in the Netherlands. In 2023, it had an enrollment of ...

, where he obtained a doctor’s degree from

Leonard Ornstein Leonard Salomon Ornstein (12 November 1880 in Nijmegen, the Netherlands – 20 May 1941 in Utrecht (city), Utrecht, the Netherlands) was a Dutch physicist. Biography Ornstein studied theoretical physics with Hendrik Lorentz, Hendrik Anto ...

in 1934.PhD dissertation at

: (under

) At

Philips Koninklijke Philips N.V. (), simply branded Philips, is a Dutch multinational health technology company that was founded in Eindhoven in 1891. Since 1997, its world headquarters have been situated in Amsterdam, though the Benelux headquarter ...

, he did research on lighting systems, especially

gas-discharge lamp Gas-discharge lamps are a family of artificial light sources that generate light by sending an electric discharge through an ionization, ionized gas, a plasma (physics), plasma. Typically, such lamps use a noble gas (argon, neon, krypton, and x ...

s. Later he was appointed professor of

, leading the Atomic Physics group, mainly researching gas discharges and plasmas. The

Kruithof curve The Kruithof curve describes a region of illuminance levels and color temperatures that are often viewed as comfortable or pleasing to an observer. The curve was constructed from psychophysical data collected by Dutch physicist Arie Andries K ...

, describing the influence of

colour temperature Color (or colour in Commonwealth English; see spelling differences) is the visual perception based on the electromagnetic spectrum. Though color is not an inherent property of matter, color perception is related to an object's light absorpt ...

on visual perception, is named after him.

References

External links

* {{DEFAULTSORT:Kruithof, Arie Andries 1909 births 1993 deaths 20th-century Dutch physicists Utrecht University alumni Academic staff of the Eindhoven University of Technology People from Zeist