Arie Andries Kruithof (1909,

Zeist Zeist () is the capital and largest town of the municipality of Zeist. The town is located in the Utrecht province of the Netherlands, east of the city of Utrecht. History The town of "Seist" was first mentioned in a charter in the year 83 ...

(NL) – 1993, Son en Breugel (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 to be a bridge or a connection between physics and engineering. "Applied" is distinguished from "pure" by a subtle combination ...

Eindhoven University of Technology The Eindhoven University of Technology ( nl, Technische Universiteit Eindhoven), abbr. TU/e, is a public technical university in the Netherlands, located in the city of Eindhoven. In 2020–21, around 14,000 students were enrolled in its BSc a ...

(Netherlands). Kruithof studied physics at

Utrecht University Utrecht University (UU; nl, Universiteit Utrecht, formerly ''Rijksuniversiteit Utrecht'') is a public research university in Utrecht, Netherlands. Established , it is one of the oldest universities in the Netherlands. In 2018, it had an enrollme ...

, where he obtained a doctor’s degree from

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

in 1934.PhD dissertation at

: (under

) At

Philips Koninklijke Philips N.V. (), commonly shortened to Philips, is a Dutch multinational conglomerate corporation that was founded in Eindhoven in 1891. Since 1997, it has been mostly headquartered in Amsterdam, though the Benelux headquarters i ...

, 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 ionized gas, a plasma. Typically, such lamps use a noble gas (argon, neon, krypton, and xenon) or a mixture of thes ...

s. Later he was appointed professor of

, leading the Atomic Physics group, mainly researching gas discharges and

plasma Plasma or plasm may refer to: Science * Plasma (physics), one of the four fundamental states of matter * Plasma (mineral), a green translucent silica mineral * Quark–gluon plasma, a state of matter in quantum chromodynamics Biology * Blood pla ...

s. The Kruithof curve, describing the influence of

colour temperature Color temperature is the color of light emitted by an idealized opaque, non-reflective body at a particular temperature measured in kelvins. The color temperature scale is used to categorize the color of light emitted by other light sources ...

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