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12개 기사
#4
6,166 조회

전희철족(Actinium族)은 악티늄부터 로렌슘까지 원자 번호가 89부터 103까지인 15개의 금속 원소를 포함하고 있는 족이다.

#5
5,941 조회

검은 목요일 또는 블랙 서스데이(Black Thursday)에는 다음이 있다.1929년 월스트리트 대폭락 검은 목요일 산불 2020년 주가 대폭락

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On This Day

10개 이벤트
2002
A bomb exploded in the Myyrmanni shopping center in Helsinki, Finland (aftermath pictured), resulting in seven deaths and 159 injuries.
1987
Sri Lankan Civil War: The Indian Peace Keeping Force began Operation Pawan to take control of Jaffna from the Tamil Tigers and enforce their disarmament as a part of the Indo-Sri Lanka Accord.
1987
An estimated 750,000 people attended the "Great March" in Washington, D.C., to demand greater civil rights for the LGBT community.
1984
Aboard the Space Shuttle Challenger, astronaut Kathryn D. Sullivan (pictured) became the first American woman to perform a space walk.
1973
Typhoon Nora, the fourth-most intense tropical cyclone on record, dissipated after killing 40 people and leaving more than a million homeless across Taiwan and the Philippines.
1968
Apollo 7, the first manned mission of NASA's Apollo program, and the first three-man American space mission, launched from Complex 34 in Cape Kennedy, Florida.
1950
A field-sequential color system developed by Hungarian-American engineer Peter Goldmark became the first color television system to be adopted for commercial use, only for it to be abandoned a year later.
1950
CBS's field-sequential color system for television was the first to be licensed for broadcast by the U.S. Federal Communications Commission.
1942
World War II: At the Battle of Cape Esperance on the northwest coast of Guadalcanal, American ships intercepted and defeated a Japanese fleet sent to attack Henderson Field.
1937
Former British king Edward and his wife arrived at Berlin Friedrichstraße station to begin a tour of Nazi Germany, where they were greeted with Nazi salutes and dined with high-ranking members of the state apparatus.

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