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1 day ago · Quantum mechanics is a fundamental theory in physics that describes the behavior of nature at and below the scale of atoms. [2] : 1.1 It is the foundation of all quantum physics, which includes quantum chemistry, quantum field theory, quantum technology, and quantum information science . Quantum mechanics can describe many systems that ...
8 hours ago · The Akkadian Empire (/ ə ˈ k eɪ d i ən /) was the first known ancient empire of Mesopotamia, succeeding the long-lived civilization of Sumer.Centered on the city of Akkad (/ ˈ æ k æ d /) and its surrounding region, the empire would unite Akkadian and Sumerian speakers under one rule and exercised significant influence across Mesopotamia, the Levant, and Anatolia, sending military ...
1 day ago · Alchemy (from Arabic: al-kīmiyā; from Ancient Greek: χυμεία, khumeía) [1] is an ancient branch of natural philosophy, a philosophical and protoscientific tradition that was historically practised in China, India, the Muslim world, and Europe. [2]
1 day ago · Throughout recorded history, attempts at producing a state of general anesthesia can be traced back to the writings of ancient Sumerians, Babylonians, Assyrians, Egyptians, Indians, and Chinese. Despite significant advances in anatomy and surgical technique during the Renaissance, surgery remained a last-resort treatment largely due to the pain ...
8 hours ago · In vitro fertilisation ( IVF) is a process of fertilisation where an egg is combined with sperm in vitro ("in glass"). The process involves monitoring and stimulating a woman's ovulatory process, removing an ovum or ova (egg or eggs) from their ovaries and letting a man's sperm fertilise them in a culture medium in a laboratory.
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- Reproductive Endocrinology & Infertility
1 day ago · Methane is a tetrahedral molecule with four equivalent C–H bonds. Its electronic structure is described by four bonding molecular orbitals (MOs) resulting from the overlap of the valence orbitals on C and H. The lowest-energy MO is the result of the overlap of the 2s orbital on carbon with the in-phase combination of the 1s orbitals on the ...
8 hours ago · Same-sex marriage, also known as gay marriage, is the marriage of two people of the same legal sex. As of 2024, marriage between same-sex couples is legally performed and recognized in 36 countries, [1] [2] [3] with a total population of 1.3 billion people (17% of the world's population).