#1 トレンド
この日の人気記事と歴史的な瞬間。 2分で読めます
人気記事
12 記事
#4
97,449 ビュー
八木・宇田アンテナ は、アレイアンテナの一種。通常、ダイポールアンテナを素子としており、宇田新太郎の主導的研究によって、八木秀次との共同で発明された。別称として、指向性短波アンテナや八木アンテナという名称が流通している。
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46,758 ビュー
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41,944 ビュー
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40,785 ビュー
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38,239 ビュー
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31,183 ビュー
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28,550 ビュー
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27,832 ビュー
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27,622 ビュー
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27,534 ビュー
今日の出来事
10 イベント1986
The Space Shuttle Challenger disintegrated 73 seconds into its tenth mission (video featured), killing all seven crew members.
1984
Tropical Storm Domoina made landfall in southern Mozambique, causing some of the most severe flooding recorded in the region.
1981
U.S. president Ronald Reagan lifted price controls from petroleum products, contributing to the 1980s oil glut.
1964
Three U.S. Air Force pilots aboard an unarmed T-39 Sabreliner were killed when the aircraft was shot down over Erfurt, East Germany, by a Soviet MiG-19.
1961
In Gitarama, Rwanda, local and other government officials initiated a coup to overthrow the monarchy and establish a republic.
1958
The Lego Group, a Danish toy company, filed a patent in Denmark for the design of Lego bricks.
1941
World War II: About three hours after Thai bombers raided Sisophon, a ceasefire paused hostilities in the Franco-Thai War.
1933
Choudhry Rahmat Ali published a pamphlet in which he called for the creation of a Muslim state in north-western India that he termed "Pakstan".
1922
The largest recorded snowstorm in the history of Washington, D.C., collapsed the Knickerbocker Theatre (damage pictured), killing 98 people.
1916
The province of Manitoba passed a law that first granted some Canadian women the right to vote.