Dutch-physicists-Hendrik-B-.-G-.-Casimir-and-Dirk

Dutch physicists Hendrik B. G. Casimir and Dirk Polder at Philips Research Labs proposed the existence of a force between two polarizable atoms and between such an atom and a conducting plate in 1947, and, after a conversation with Niels Bohr who suggested it had something to do with zero-point energy, Casimir alone formulated the theory predicting a force between neutral conducting plates in 1948 ; the former is called the Casimir-Polder force while the latter is the Casimir effect in the narrow sense.

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Dutch and physicists

Category: Dutch physicists

In 1948, Dutch physicists Hendrik B. G. Casimir and Dirk Polder predicted the existence of a tiny repulsive force between closely placed metal plates due to resonances in the vacuum energy in the space between them.

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The theory of aberrated point-spread functions close to the optimum focal plane was studied by the Dutch physicists Fritz Zernike and Nijboer in the 1930 – 40s.

Category: Dutch physicists

Multistable perception was a common feature in the artwork of the Dutch lithographer M. C. Escher, who was strongly influenced by mathematical physicists such as Roger Penrose.

Category: Dutch physicists

Dutch and Hendrik

( The common misconception that he was Dutch and that his first name was Hendrik stem from Dutch documents of his third voyage.

* 1566 – Two-hundred Dutch noblemen, led by Hendrik van Brederode, force themselves into the presence of Margaret of Parma and present the Petition of Compromise, denouncing the Spanish Inquisition in the Netherlands.

As late as the 19th century, a similar situation developed at Antwerp, where a Dutch garrison under General David Hendrik Chassé held out in the city's citadel between 1830 and 1832, while the city itself had already become part of the independent Belgium.

In 1923, Danish and Dutch scientists Christian Christiansen and Hendrik Anthony Kramers, in an analysis of formation of polymers, pointed out that such a chain reaction need not start with a molecule excited by light, but could also start with two molecules colliding violently in the traditional way classically previously proposed for initiation of chemical reactions, by van't Hoff.

* 1928 – Hendrik Lorentz, Dutch physicist, Nobel laureate ( b. 1853 )

* 1853 – Hendrik Lorentz, Dutch physicist, Nobel Prize laureate ( d. 1928 )

* Johan Hendrik Caspar Kern ( or H. Kern, 1833 – 1917 ), Dutch linguist and former head of Brahmana College and of Queen's College, Benares

It is named after the Dutch physicist Hendrik Lorentz.

* 1879 – Hendrik van Heuckelum, Dutch footballer ( d. 1929 )

In 1905 Theodoor Hendrik van de Velde, a Dutch gynecologist, showed that women only ovulate once per menstrual cycle.

* 1854 – Hendrik Willem Bakhuis Roozeboom, Dutch chemist ( d. 1907 )

In 1950, the idea was independently revived by Dutch astronomer Jan Hendrik Oort as a means to resolve a paradox: over the course of the Solar System's existence, the orbits of comets are unstable ; eventually, dynamics dictate that a comet must either collide with the Sun or a planet, or else be ejected from the Solar System by planetary perturbations.

* The Casimir effect is discovered by Dutch physicist Hendrik Casimir.

* February 4 – Hendrik Lorentz, Dutch physicist, Nobel Prize laureate ( b. 1853 )

* January 1 – Hendrik Goltzius, Dutch painter ( b. 1558 )

** Hendrik Jut, Dutch murderer ( b. 1851 )

* July 18 – Hendrik Lorentz, Dutch physicist, Nobel Prize laureate ( d. 1928 )

* November 16 – Christian Hendrik Persoon, Dutch mycologist ( b. 1761 )

Having become monarchs with a claim to represent the entire nation and stand above factions, the House of Orange decided to break with the song which served them as heads of a faction, and the Wilhelmus was hence replaced by Hendrik Tollens ' song Wien Neêrlands bloed door d ' aderen vloeit, which was the official Dutch anthem from 1815 till 1932.

* January or February – Hendrik Goltzius, Dutch painter ( d. 1617 )

It is the first mineral to be named after someone, and was first described in 1789 for an occurrence in Haslach, Harzburg and Oberstein, Germany, and named for Colonel Hendrik Von Prehn ( 1733 – 1785 ), commander of the military forces of the Dutch colony at the Cape of Good Hope from 1768 to 1780.

Though William's complicity in the lynching has never been proved ( and some 19th-century Dutch historians have made an effort to disprove that he was an accessory before the fact ) he thwarted attempts to prosecute the ringleaders, and even rewarded some, like Hendrik Verhoeff, with money, and others, like Johan van Banchem and Johan Kievit, with high offices.

The town was nevertheless finally conquered by Frederik Hendrik of Orange in 1629 in a typically Dutch stratagem: he diverted the rivers Dommel and Aa, created a polder by constructing a forty-kilometre dyke and then pumped out the water by mills.

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