۲۳ اکتبر

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۲۰۱۹ میلادی

۲۳ اکتبر در تقویم گرگوری، دویست و نود و ششمین (در سال‌های کبیسه دویست و نود و هفتمین) روز سال است. ۶۹ روز تا پایان سال باقی است.

روز ملی شیمی[ویرایش]

روز ۲۳ اکتبر (برابر با اول آبان) بعنوان «روز ملی شیمی» و روز «مول» (عدد آووگادرو)، در مدارس آمریکا، کانادا، استرالیا نام‌گذاری شده‌است. دلیل این نام‌گذاری بالا بردن آگاهی عمومی از اهمیت شیمی در کیفیت زندگی روزمره بوده‌است و توسط یک معلم شیمی به‌نام پروفسور موریس اوهلر پیشنهاد شده‌است. اوهلر جوایز متعددی را در عرصهٔ شیمی و فعالیت‌های اجتماعی دریافت کرده اکنون بازنشسته و مقیم ویسکانسین است. او پیشنهاد داد تا عدد «آووگادرو» (۱۰۲۳× ۶٫۰۲) را متناظر با شیوه نمایش زمان و تاریخ آمریکایی (ماه ـ روز ـ ساعت)، معادل با ساعت ۶:۰۲ روز ۲۳ اکتبر (برابر با اول آبان امسال) در نظر بگیرند.[۱]

زادروزها[ویرایش]

مرگ‌ها[ویرایش]

جستارهای وابسته[ویرایش]

پیوند به بیرون[ویرایش]

  1. «بزرگداشت هفته ملی شیمی و روز «مول» در آمریکا». isw.ir. دیده‌بان علم ایران. دریافت‌شده در ۱ آبان ۱۳۹۸.

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October 23 is the 296th day of the year (297th in leap years) in the Gregorian calendar. 69 days remain until the end of the year.

Events[edit]

  • 42 BC – Liberators' civil war: Mark Antony and Octavian decisively defeat Brutus's army. Brutus commits suicide.
  • 425Valentinian III is elevated as Roman emperor at the age of six.
  • 501 – The Synodus Palmaris, called by Gothic king Theoderic, absolves Pope Symmachus of all charges, thus ending the schism of Antipope Laurentius.
  • 1086 – Spanish Reconquista: At the Battle of Sagrajas, the Almoravids defeats the Castilians, but are unable to take advantage of their victory.
  • 1157 – The Battle of Grathe Heath ends a civil war in Denmark.
  • 1295 – The first treaty forming the Auld Alliance between Scotland and France against England is signed in Paris.
  • 1641 – Irish Catholic gentry from Ulster attempt to seize control of Dublin Castle, the seat of English rule in Ireland, so as to force concessions.
  • 1642 – The Battle of Edgehill is the first major battle of the English Civil War.
  • 1707 – The First Parliament of Great Britain convenes.
  • 1739 – The War of Jenkins' Ear begins when Prime Minister Walpole reluctantly declares war on Spain.
  • 1812 – A French general begins a conspiracy to overthrow Napoleon, claiming that the Emperor died in Russia.
  • 1850 – The first National Women's Rights Convention begins in Worcester, Massachusetts.
  • 1864 – American Civil War: The Battle of Westport is the last significant engagement west of the Mississippi River.
  • 1906Alberto Santos-Dumont flies an airplane in the first heavier-than-air flight in Europe.
  • 1911 – The Italo-Turkish War sees the first use of an airplane in combat when an Italian pilot makes a reconnaissance flight.
  • 1912 – First Balkan War: The Battle of Kumanovo between the Serbian and Ottoman armies begins.
  • 1939 – The Japanese Mitsubishi G4M twin-engine "Betty" Bomber makes its maiden flight.
  • 1942 – World War II: Allied forces commence the Second Battle of El Alamein, which proves to be the key turning point in the North African campaign.
  • 1942 – All 12 passengers and crewmen aboard American Airlines Flight 28 are killed when it collides with a USAAF bomber near Palm Springs, California.
  • 1942 – World War II: The Battle for Henderson Field begins on Guadalcanal.
  • 1944 – World War II: The Battle of Leyte Gulf begins.
  • 1955 – Prime Minister Ngô Đình Diệm defeats former emperor Bảo Đại in a referendum and founds the Republic of Vietnam.
  • 1955 – The people of the Saar region vote in a referendum to unite with Germany instead of France.
  • 1956 – Secret police shoot several anti-communist protesters, igniting the Hungarian Revolution.
  • 1958 – Canada's Springhill mining disaster kills seventy-five miners, while ninety-nine others are rescued.
  • 1965 – Vietnam War: The 1st Cavalry Division (Airmobile), in conjunction with South Vietnamese forces, launches an operation seeking to destroy Communist forces during the siege of Plei Me.
  • 1970Gary Gabelich sets a land speed record in a rocket-powered automobile called the Blue Flame, fueled with natural gas.
  • 1972 – Vietnam War: Operation Linebacker, a US bombing campaign against North Vietnam in response to its Easter Offensive, ends after five months.
  • 1973 – Watergate scandal: President Nixon agrees to turn over subpoenaed audio tapes of his Oval Office conversations.
  • 1982A gunfight breaks out between police officers and members of a religious cult in Arizona. The shootout leaves two cultists dead and dozens of cultists and police officers injured.
  • 1983 – Lebanese Civil War: The U.S. Marines barracks in Beirut is hit by a truck bomb, killing 241 U.S. military personnel. A French army barracks in Lebanon is also hit that same morning, killing 58 troops.
  • 1989 – The Hungarian Republic officially replaces the communist Hungarian People's Republic.
  • 1989 – Bankruptcy of Wärtsilä Marine; the biggest bankruptcy in the Nordic countries up until then.
  • 1991 – Signing of the Paris Peace Accords which ends the Cambodian–Vietnamese War.
  • 1993 – The Troubles: A Provisional IRA bomb prematurely detonates in Belfast, killing the bomber and nine civilians.
  • 1995Yolanda Saldívar is found guilty of first-degree murder in the shooting death of popular Latin singer Selena.
  • 1998 – Israel and the Palestinian Authority sign the Wye River Memorandum.
  • 2002 – Chechen terrorists seize the House of Culture theater in Moscow and take approximately 700 theater-goers hostage.
  • 2004 – A powerful earthquake and its aftershocks hit Niigata Prefecture in northern Japan, killing 35 people, injuring 2,200, and leaving 85,000 homeless or evacuated.
  • 2007 – A storm causes the Mexican Kab 101 oil platform to collide with a wellhead, leading to the death and drowning of 22 people during rescue operations after evacuation of the platform.
  • 2011 – A powerful 7.2 magnitude earthquake strikes Van Province, Turkey, killing 582 people and injuring thousands.
  • 2011 – The Libyan National Transition Council deems the Libyan Civil War over.
  • 2012 – After 38 years, the world's first teletext service (BBC's Ceefax) ceases broadcast due to Northern Ireland completing the digital switchover.
  • 2015 – The lowest sea-level pressure in the Western Hemisphere, and the highest reliably-measured non-tornadic sustained winds, are recorded in Hurricane Patricia, which strikes Mexico hours later, killing at least 13 and causing over $280 million in damages.

Births[edit]

Deaths[edit]

Holidays and observances[edit]

References[edit]

  1. ^ Philip Caraman (1990). Ignatius Loyola. Collins. p. 4.
  2. ^ The New Encyclopaedia Britannica. Encyclopaedia Britannica. 1974. p. 285. ISBN 978-0-85229-290-7.
  3. ^ "Biography". AMANDLA STENBERG. Retrieved 2018-03-05.

External links[edit]