1039

1031 1032 1033 1034 1035 1036 1037 1038 1039 1040

political events

The Holy Roman Emperor Conrad II dies at Utrecht June 4 at age 49 and is buried in the cathedral he has started at Spires. Conrad's son Heinrich, 21, succeeds as German king. Raised by his mother, Gisela of Swabia, he was married 3 years ago to Kunigunde (Gunhilda), a daughter of the late King Canute, but she died last year and he will not remarry until 1043.

The Welsh prince Gruffydd of Gwynedd and Powys defeats English forces.

science

Mathematician and physicist Abu ali al-Hasan ibn al-Haytham (Alhazen) dies at Cairo at age 74 (approximate), having made the first real contributions to optical theory since the time of Ptolemy in the 2nd century. The first to give an accurate account of vision, he has stated correctly that light from the object seen comes to the eye. His treatise on optics will be translated into Latin in 1270 under the title Opticae thesaurus Alhazeni, conveying his theories on refraction, reflection, binocular vision, parabolic and spherical mirrors, focusing with lenses, spherical aberration, atmospheric refraction, and what appear to be increases in the size of planets when observed near the Earth's horizon.

medicine

Ergotism breaks out in parts of France (see 943; 1089).

1031 1032 1033 1034 1035 1036 1037 1038 1039 1040

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Millennium:	2nd millennium
Centuries:	10th century – 11th century – 12th century
Decades:	1000s  1010s  1020s  – 1030s –  1040s  1050s  1060s
Years:	1036 1037 1038 – 1039 – 1040 1041 1042

1039 by topic

Lists of leaders

State leaders

Birth and death categories

Births – Deaths

Establishments and disestablishments categories

Establishments – Disestablishments v • d • e

1039 in other calendars

Gregorian calendar	1039 MXXXIX
Ab urbe condita	1792
Armenian calendar	488 ԹՎ ՆՁԸ
Bahá'í calendar	-805 – -804
Berber calendar	1989
Buddhist calendar	1583
Burmese calendar	401
Byzantine calendar	6547 – 6548
Chinese calendar	戊寅年十二月初四日 (3675/3735-12-4) — to — 己卯年十二月十四日 (3676/3736-12-14)
Coptic calendar	755 – 756
Ethiopian calendar	1031 – 1032
Hebrew calendar	4799 – 4800
Hindu calendars
- Vikram Samvat	1094 – 1095
- Shaka Samvat	961 – 962
- Kali Yuga	4140 – 4141
Holocene calendar	11039
Iranian calendar	417 – 418
Islamic calendar	430 – 431
Japanese calendar
Korean calendar	3372
Thai solar calendar	1582
v • d • e

Events

• June 4—Henry III becomes King of Germany.
• The Abbey of Bec is founded.
• Bretislav I of Bohemia invades Poland.

Births

• Minamoto no Yoshiie, famous samurai

Deaths

• 10 March—Eudes of Aquitaine, Duke of Gascony
• June 4—Conrad II, Holy Roman Emperor
• Iago ab Idwal ap Meurig, Prince of Gwynedd
• Unsuri, Persian poet

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