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David Morris Lee

Lee (2007)

David Morris Lee (lahir 20 Januari 1931) ialah fisikawan Amerika Serikat yang-dengan Robert Richardson dan Douglas Osheroff-dianugerahi Penghargaan Nobel dalam Fisika 1996 untuk penemuan bersama mereka mengenai superfluiditas isotop helium-3.

Lee menerima gelar sarjana muda dari Universitas Harvard pada 1952 dan Ph.D. dalam fisika di Universitas Yale pada 1959. Ia menjadi anggota staf pengajar Universitas Cornell (Ithaca, New York) pada 1959, menjadi guru besar di sini pada 1968. Lee dan Richardson membuat alat pendingin khusus untuk riset mereka dalam suhu rendah di Cornell. Mereka menemukan superfluiditas dalam helium-3 secara kebetulan pada 1972. Mereka mendinginkan yang senyawa dalam sedikit perseribu dari derajat hampir secara absolut nol (-273 C) saat Osheroff, pelajar tingkat sarjana yang bekerja dengan mereka, memperhatikan perubahan aneh dalam tekanan internal contoh. Akhirnya kelompok itu memutuskan bahwa deviasi itu menandai transisi fase helium-3 pada superfluiditas. Karena atom dalam superfluida helium-3 bergerak dalam cara selaras, zat-zat pembentuknya mengurangi seluruh pergesekan internal dan mengalir tanpa hambatan. Helium-3 dalam keadaan ini menunjukkan reaksi menurut hukum mekanika kuantum. Penemuan superfluiditas dalam helium-3 memungkinkan ilmuwan belajar secara langsung dalam sistem makroskopis (terlihat) mekanika kuantum yang asing mengakibatkan yang sebelumnya hanya dapat dipelajari secara tak langsung dalam molekul, atom, dan partikel subatom.

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American politician Nathaniel RugglesMember of the U.S. House of Representativesfrom Massachusetts's 13th districtIn officeMarch 4, 1813 – March 3, 1819Preceded byEbenezer SeaverSucceeded byEdward Dowse Personal detailsBorn(1761-11-11)November 11, 1761Roxbury, Province of Massachusetts Bay, British AmericaDiedDecember 19, 1819(1819-12-19) (aged 58)Roxbury, Massachusetts, U.S.Political partyFederalistAlma materHarvard UniversityProfessionLawyer Coat of Arms of Nathanie…

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The topic of this article may not meet Wikipedia's notability guidelines for companies and organizations. Please help to demonstrate the notability of the topic by citing reliable secondary sources that are independent of the topic and provide significant coverage of it beyond a mere trivial mention. If notability cannot be shown, the article is likely to be merged, redirected, or deleted.Find sources: Real Story Group – news · newspapers · books · scholar …

Political party in Mali Politics of Mali Constitution Human rights Slavery Government Interim President Assimi Goïta Interim Prime Minister Abdoulaye Maïga Council of Ministers Parliament National Assembly Speaker: Vacant Administrative divisions Regions Cercles Arrondissements Communes Elections Recent elections Presidential: 2018Next Parliamentary: 20202023 Political parties Foreign relations Ministry of Foreign Affairs Minister: Kamissa Camara Diplomatic missions of / in Mali Passport Visa …

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هذه مقالة غير مراجعة. ينبغي أن يزال هذا القالب بعد أن يراجعها محرر مغاير للذي أنشأها؛ إذا لزم الأمر فيجب أن توسم المقالة بقوالب الصيانة المناسبة. يمكن أيضاً تقديم طلب لمراجعة المقالة في الصفحة المخصصة لذلك. (أبريل 2020) هذه المقالة يتيمة إذ تصل إليها مقالات أخرى قليلة جدًا. فضلً…

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