搜尋結果
1 天前 · The history of Earth is divided into four great eons, starting 4,540 mya with the formation of the planet. Each eon saw the most significant changes in Earth's composition, climate and life. Each eon is subsequently divided into eras, which in turn are divided into periods, which are further divided into epochs . Eon.
2 天前 · The 828-metre (2,717 ft) tall Burj Khalifa in Dubai has been the tallest building since 2010. The Burj Khalifa has been classified as megatall. A diagram showing the tallest buildings as of 2024 This is a list of the tallest buildings.Tall buildings, such as skyscrapers, are intended here as enclosed structures with continuously occupiable floors and a height of at least 340 metres (1,120 ft).
2 天前 · BRICS is an intergovernmental organization comprising Brazil, Russia, India, China, South Africa, Iran, Egypt, Ethiopia, and the United Arab Emirates. Originally identified to highlight investment opportunities,[1] the grouping evolved into a cohesive geopolitical bloc, with their governments meeting annually at formal summits and coordinating ...
1 天前 · Tokugawa Ieyasu. Tokugawa Ieyasu [a] [b] (born Matsudaira Takechiyo; [c] January 31, 1543 – June 1, 1616) was the founder and first shōgun of the Tokugawa shogunate of Japan, which ruled from 1603 until the Meiji Restoration in 1868. He was one of the three "Great Unifiers" of Japan, along with his former lord Oda Nobunaga and fellow Oda ...
2 天前 · Tibet (/tɪˈbɛt/ ⓘ; Tibetan: བོད, Lhasa dialect: [pʰøːʔ˨˧˩] Böd; Chinese: 西藏; pinyin: Xīzàng), or Greater Tibet, is a region in the central part of East Asia, covering much of the Tibetan Plateau and spanning about 2,500,000 km2 (970,000 sq mi). It is the homeland of the Tibetan people. Also resident on the plateau are ...
1 天前 · World War II began in Europe on 1 September 1939 with the German invasion of Poland and the United Kingdom and France's declaration of war on Germany two days later on 3 September 1939. Dates for the beginning of the Pacific War include the start of the Second Sino-Japanese War on 7 July 1937, or the earlier Japanese invasion of Manchuria, on 19 September 1931.
5 天前 · The Planck constant, or Planck's constant, denoted by , [1] is a fundamental physical constant [1] of foundational importance in quantum mechanics: a photon 's energy is equal to its frequency multiplied by the Planck constant, and the wavelength of a matter wave equals the Planck constant divided by the associated particle momentum.
