* 1629 – Christiaan Huygens, Dutch mathematician ( d. 1695 )

In 1691 Gottfried Leibniz, Christiaan Huygens, and Johann Bernoulli derived the equation in response to a challenge by Jakob Bernoulli.

The mathematical description was derived in 1659 by Dutch physicist Christiaan Huygens.

Augustin-Jean Fresnel did more definitive studies and calculations of diffraction, made public in 1815 and 1818, and thereby gave great support to the wave theory of light that had been advanced by Christiaan Huygens and reinvigorated by Young, against Newton's particle theory.

It was notable for containing the principles of the stereographic and the orthographic projections, and it inspired the works of Desargues and Christiaan Huygens.

* Christiaan Huygens 1629 – 1695 ( Netherlands )

Christiaan Huygens experimented with gunpowder in 1673 in an early attempt to build an internal combustion engine, but he did not succeed.

The Huygens – Fresnel principle ( named after Dutch physicist Christiaan Huygens and French physicist Augustin-Jean Fresnel ) is a method of analysis applied to problems of wave propagation both in the far-field limit and in near-field diffraction.

* Christiaan Huygens

Christiaan Huygens, prior to Newton, had hypothesized that light was a wave propagating through an aether, but Newton rejected this idea.

In 1668, Wilkins proposed using Christopher Wren's suggestion of a pendulum with a half-period of one second to measure a standard length that Christiaan Huygens had observed to be 38 Rhineland or English inches ( 997mm ) in length.

* 1655 – Saturn's largest moon, Titan, is discovered by Christiaan Huygens.

There has been some debate about who the original inventor of the magic lantern is, but the most widely accepted theory is that Christiaan Huygens developed the original device in the late 1650s.

This phenomenon was first observed by Christiaan Huygens in 1665.

Christiaan Huygens published the first book on probability

File: Christiaan Huygens-painting. jpeg | Christiaan Huygens ( 1629-1695 ): studied the rings of Saturn and discovered its moon Titan, invented the pendulum clock, studied optics and centrifugal force, theorized that light consists of waves ( Huygens – Fresnel principle ) which became instrumental in the understanding of wave-particle duality.

Christiaan Huygens published a book on the subject in 1657 and in the 19th century a big work was done by Laplace in what can be considered today as the classic interpretation.

From its invention in 1656 by Christiaan Huygens until the 1930s, the pendulum clock was the world's most precise timekeeper, accounting for its widespread use.

The pendulum clock was invented in 1656 by Dutch scientist Christiaan Huygens, and patented the following year.

Optics, for instance, was revolutionized by people like Robert Hooke, Christiaan Huygens, René Descartes and, once again, Isaac Newton, who developed mathematical theories of light as either waves ( Huygens ) or particles ( Newton ).

Augustin-Jean Fresnel did more definitive studies and calculations of diffraction, published in 1815 and 1818, and thereby gave great support to the wave theory of light that had been advanced by Christiaan Huygens and reinvigorated by Young, against Newton's particle theory.

The earliest comprehensive theory of light was advanced by Christiaan Huygens, who proposed a wave theory of light, and in particular demonstrated how waves might interfere to form a wavefront, propagating in a straight line.

Frank Kingdon-Ward in the early 20th century, Alan Rabinowitz in the 1990s, P. Christiaan Klieger in 2003, and others have reported a tribe of pygmy Tibeto-Burman speakers known as the T ' rung inhabiting the remote region of Mt.

When joined by his family the band is known as Danielson Famile or Danielson Family, whose members have included Smith ; his " siblings Andrew, David, Megan, and Rachel ; wife Elin ; friends Christiaan & Melissa Palladino ; daughter Lilly ".

* The result above is a corollary of a general theorem by Christiaan Huygens which is also known as gambler's ruin.

As a distinct field, experimental physics was established in early modern Europe, during what is known as the Scientific Revolution, by physicists such as Galileo Galilei, Christiaan Huygens, Johannes Kepler, Blaise Pascal and Sir Isaac Newton.

The smallest known orphan pattern in Conway's Game of Life was found by Marijn Heule, Christiaan Hartman, Kees Kwekkeboom and Alain Noels in December 2011.

Giovanni Christiaan van Bronckhorst (; born 5 February 1975 in Rotterdam ), known as Gio in Spain, is a retired Dutch footballer of Moluccan ( Indonesia ) descent who served as the captain of the Dutch national team from August 2008 until his retirement.

Huygens software is named after the Dutch physicist Christiaan Huygens who is perhaps best known for his argument that light behaves like waves.

The government successfully repressed the Indian protesters, but the public outcry over the harsh treatment of peaceful Indian protesters by the South African government forced South African leader Jan Christiaan Smuts, himself a philosopher, to negotiate a compromise with Gandhi.

The following year, Sir Frederick Hopkins postulated that some foods contained " accessory factors "— in addition to proteins, carbohydrates, fats, and salt — that were necessary for the functions of the human body .< ref > Christiaan Eijkman, Beriberi and Vitamin B < sub > 1 </ sub >, Official Web Site of the Nobel Foundation </ ref > In 1901, Gerrit Grijns ( May 28, 1865 – November 11, 1944 ), a Dutch physician and assistant to Christiaan Eijkman in the Netherlands correctly interpreted the disease as a deficiency syndrome, and between 1910 and 1913, Dr. Edward Bright Vedder established that an extract of rice bran is a treatment for beriberi.

" He wrote two books on the subject, one published in 1647 and the other in 1668, which cover some two or three thousand closely printed pages ; the fallacy in the quadrature was pointed out by Christiaan Huygens.

* 1858 – Christiaan Eijkman, Dutch physician, Nobel Prize laureate ( d. 1930 )

Christiaan Neethling Barnard ( 8 November 1922 – 2 September 2001 ) was a South African cardiac surgeon who performed the world's first successful human-to-human heart transplant.

It was designed by architect Louis Christiaan Kalff, while the exhibition was conceived by James Gardner.

* 1930 – Christiaan Eijkman, Dutch physician and pathologist, recipient of the Nobel Prize in Physiology or Medicine ( b. 1858 )

* 1922 – Christiaan Barnard, South African heart surgeon ( d. 2001 )

After Blaise Pascal encouraged him to do so, Huygens wrote the first book on probability theory, De ratiociniis in ludo aleae (" On Reasoning in Games of Chance "), which he had published at 5: 56 pm on April 10, 1657.

Spring driven pendulum clock, designed by Huygens, built by instrument maker Salomon Coster ( 1657 ), and manuscript Horologium Oscillatorium, Museum Boerhaave, Leiden

The oldest known Huygens style pendulum clock is dated 1657 and can be seen at the Museum Boerhaave in Leiden which also shows an important astronomical clock owned and used by Huygens.

The invention of the balance spring around 1657 by Robert Hook and Christian Huygens greatly increased the accuracy of portable timepieces, transforming early pocketwatches from expensive novelties to useful timekeepers.