Christiaan Collection

Saturn. Diagram of Saturn and its orbit and altering appearance of its rings from different angles
532215 Saturn. Diagram of Saturn and its orbit and altering appearance of its rings from different angles. From Christiaan Huyghens Systema Saturnium, Leyden, 1659 ; Universal History Archive/UIG

Frontispice of " Treat of Light" by Christiaan Huygens (Huyghens) (1629-1695), 1690
XEE5029818 Frontispice of " Treat of Light" by Christiaan Huygens (Huyghens) (1629-1695), 1690; (add.info.: Frontispice of " Treat of Light" by Christiaan Huygens (Huyghens)

Portrait of Christiaan Huygens (Huyghens) (1629-1695) Dutch physicist and mathematician - painting by Gaspar Netscher
XEE5029831 Portrait of Christiaan Huygens (Huyghens) (1629-1695) Dutch physicist and mathematician - painting by Gaspar Netscher from 1671; (add.info)

Portrait of Christiaan Huygens (Huyghens) (1629-1695) Dutch physicist and mathematician
XEE5029815 Portrait of Christiaan Huygens (Huyghens) (1629-1695) Dutch physicist and mathematician; (add.info.: Portrait of Christiaan Huygens (Huyghens) (1629-1695) Dutch physicist and mathematician

Christiaan Petrus Strauss South Africa Rugby Union 05 October 1992 Date: 05 October 1992

The first optical instruments: microscope used at the time of Christiaan Huygens
XEE4140489 The first optical instruments: microscope used at the time of Christiaan Huygens (Huyghens) (1629-1695). Anonymous illustration from 1925. Private collection

Vibratory movements: Christiaan Huygens (1629-1695) studies the elasticity of
XEE4139926 Vibratory movements: Christiaan Huygens (1629-1695) studies the elasticity of the material by observing ivory beads. Anonymous illustration from 1925. Private collection

Jan C Smuts
Field Marshal Jan Christiaan Smuts (1870-1950) PC, OM, CH, DTD, ED, KC, FRS Date: 1917

Christiaan Huygens (1629-1695), Dutch mathematician and astronomer
XEE4403761 Christiaan Huygens (1629-1695), Dutch mathematician and astronomer, presenting his clock to Louis XIV. by Unknown Artist

Huyghens clock 1657 (free pendulum) - engraving, deb. 20th century
LSE4104224 Huyghens clock 1657 (free pendulum) - engraving, deb. 20th century by French School, (20th century); Private Collection; (add.info.: Huyghens clock 1657 (free pendulum) - engraving, deb

Christian Huyghens observing "the inclination to movement"
LSE4093743 Christian Huyghens observing " the inclination to movement" or body elasticity -in " Physique Populaire" by Emile Desbeaux, 1891 by French School

Time: clock a free pendulum invented by Christiaan Huygens (1629-1695) in 1657
XEE4140947 Time: clock a free pendulum invented by Christiaan Huygens (1629-1695) in 1657. Anonymous illustration from 1925. Private collection

The problem of the hour: Huyghens clock, first watches, Wallis point in 1766
LSE4108636 The problem of the hour: Huyghens clock, first watches, Wallis point in 1766, Berthoud stopwatch, chronometer, medium sun - engraving, deb

portrait of Christiaan Huygens. Dutch physicist and mathematician (1629 to 1695
XEE4403645 portrait of Christiaan Huygens.Dutch physicist and mathematician (1629 to 1695) after " La Ciencia y sus Hombres" by Louis Figuier

De Wets Attempt to Cross the Railway, 1902. Creator: Unknown
De Wets Attempt to Cross the Railway, 1902. De Wets troops attempt to cross a railway line in Orange River Colony under fire from British troops in a blockhouse

The Capture of De Wets Convoy at Reitz, June 6, 1901, 1902. Attack on Boer waggons by Colonel De Lisles Force.. From " South Africa and the Transvaal War, Vol. VII", by Louis Creswicke

The Reddersburg Mishap: Men of the Irish Rifles and Mounted Infantry Delivering Up Their Arms, 1901. Troops led by General Christiaan de Wet attacked a convoy of 600 of the Royal Irish Rifles

De Wet, 1901. Creator: Unknown
De Wet, 1901. Christiaan de Wet (1854-1922) Boer general, rebel leader and politician planned the surprise attack on Sannas Post followerd by victory at Reddersburg

Huygens, (1629-1695), 1830. Creator: Unknown
Huygens, (1629-1695), 1830. Christiaan Huygens or Huyghens (1629-1695) Dutch physicist, mathematician, astronomer and inventor who made contributions to optics, mechanics and astronomy

Arnold Houbraken, (1804). Creator: Christian Josi
Arnold Houbraken, (1804). Portrait of Dutch painter and writer Arnold Houbraken (1660-1719). Some of his ten children were also artists. From the " European Magazine"

Boer commanders, South Africa, Boer War, 1902. Artist: Underwood & Underwood
Boer commanders, South Africa, Boer War, 1902. Ex-Commandant Generals Christiaan de Wet (1854-1922), Koos de la Rey (1837-1914) and Louis Botha (1862-1919)

Christiaan Huygens, 17th century Dutch mathematician, astronomer and physicist, c1870. Artist: JH Rennefeld
Christiaan Huygens, 17th century Dutch mathematician, astronomer and physicist, c1870. Huygens (1629-1695) made important contributions in several scientific fields

Design for a pendulum clock, 1673. Note the cycloidal pendulum with cheeks (fig.II). In 1657 Christiaan Huygens began work on developing Galileos work on the pendulum

Christiaan Huygens, Dutch physicist, c1670. Huygens was responsible for two great advances in horology: the application of both the pendulum to the clock and the balance spring to the watch

Boer War, 1899-1902. Boer commander Christiaan Rudolf de Wet attempting to lead a column across a railway at night past an armoured train and blockhouse

Attack on the British encampment at Tweefontein, South Africa, Boer War, 1901 (1902)
Attack on the British encampment at Tweefontein, South Africa, Boer War, 1901(1902). Boer forces under General de Wet surprised an encampment of British soldiers at Tweefontein on 25 December 1901

Christiaan Huygens, Dutch physicist, mathematician and astronomer, 1762. Huygens made important contributions in several scientific fields

Saturn, 1659. Diagram of Saturn and its orbit and the altering appearance of its rings from different angles. Dutch physicist

Christiaan Huygens (1629-1695), Dutch physicist, mathematician and astronomer, c1870. Huygens made important contributions in several scientific fields

Refracting telescope without a tube, designed by Christiaan Huyghens c1650 (1724). From an edition of Huyghens Opera Varia, 1724

Christiaan Huyghens (1629-1695), Dutch physicist. Artist: F Henrionnet
Christiaan Huyghens (1629-1695), Dutch physicist. Portrait from obverse of commemorative medal. Huyghens applied the pendulum to clocks

Christiaan de Wet, Boer soldier and politician, c1900. De Wet (1854-1922) commanded the forces of the Orange Free State during the Second Boer War (1899-1902)

Christiaan De Wet, Afrikaner soldier, politician and big game hunter, c1899. De Wet (1854-1922) addressing burghers near Ventersdorp Station

Christiaan Rudolf de Wet, 1854 - 1922. Boer general, rebel leader and politician. From The Pageant of the Century, published 1934

Christiaan Huygens, 1629 to 1695. Dutch mathematician, astronomer, physicist, horologist and writer of early science fiction

The Peace Conference That Ended The Second Boer War, 31 May 1902, Melrose House, Pretoria, Transvaal Colony, South Africa. Back Row From Left, Colonel Henderson, Van Velden, Major Watson, H

African Colonial Members Of The Closer Union Convention Of 1908 Who Reached Terms Which Resulted In The British Parliament Passing The South Africa Act Of 1909

Jan Christiaan Smuts, 1870

Jan Christiaan Smuts 1870 - 1950. South African Statesman And Soldier. From The Year 1917 Illustrated, Published London 1918

Men Of The Royal Irish Rifles And Mounted Infantry Surrendering Their Weapons To The Troops Of General Christiaan De Wet At Reddersburg, South Africa During The Second Boer War

Jan Christiaan Smuts, Lieutenant General. The Right Honourable J. C. Smuts 1870 - 1950. South African Statesman
Jan Christiaan Smuts, Lieutenant General. The Right Honourable J.C. Smuts 1870 - 1950. South African Statesman.From A Photograph By Elliott And Fry

South Africa. General Christiaan Frederick Beyers Troops Surrender At The Vaal River And The Maritz Rebellion Is Finished December 8 1914 In Drawing Beyers 1869 To 1914 Has Attempted To Escape And He

Jan Christiaan Smuts 1870 To 1950 South African Statesman And Soldier As He Looked Circa 1915 From The War Illustrated Album Deluxe Published London 1916

Christiaan Van Eeghen
CHRISTIaN PETER VAN EEGHEN Dutch citizen, associated in some way with the Vondelpark in Amsterdam - did he design it ? present it ? or simply think of it ? Date: 1816 - 1889

Nursery on board MV Christiaan Huygens ocean liner
Nursery on board the MV Christiaan Huygens Dutch ocean liner, later used as a troopship during WW2. Date: circa 1933

Carl Christian Nassau
CAREL CHRISTIaN vorst van NASSAU-WEILBURG Dutch military commander Date: 1735 - 1788

JAN CHRISTIaN SMUTS (1870-1950). South African statesman, soldier and philosopher. Photograph, early 20th century

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Christiaan Petrus Strauss, a name that resonates with the pioneers of scientific exploration. Born in 1629, Christiaan Huygens was a Dutch mathematician and astronomer who left an indelible mark on the world of science. In his quest to unravel the mysteries of nature, Huygens revolutionized optical instruments. He introduced the first microscope during his time, following in the footsteps of great minds like Jan C Smuts. Through this invention, he delved into uncharted territories and explored vibratory movements with utmost precision. Huygens's insatiable curiosity led him to study the elasticity of various materials. His groundbreaking research on vibratory movements paved the way for future discoveries in physics and laid a solid foundation for our understanding of motion. One cannot overlook Huyghens clock when discussing his contributions. In 1657, he invented this ingenious device - a free pendulum clock that accurately measured time. This invention not only solved the problem of keeping precise time but also sparked advancements in horology that continue to shape our lives today. As we gaze upon portraits depicting Christiaan Huygens' intellectual prowess, we are reminded of his significant role as a physicist and mathematician. His brilliance transcended boundaries and propelled humanity forward through his relentless pursuit of knowledge. Huygens's impact extended beyond scientific realms; he even inspired artistic expressions such as "De Wets Attempt to Cross the Railway. " Created by an unknown artist in 1902, this artwork captures Huygens observing "the inclination to movement, " showcasing how deeply ingrained his ideas became within society, and is undeniable that Christiaan Petrus Strauss left an enduring legacy through his pioneering work with microscopes and clocks alike. His contributions have shaped our understanding of optics, mechanics, and timekeeping – forever etching him into history as one of science's greatest minds.