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  2. Nitrogen - Wikipedia

    en.wikipedia.org/wiki/Nitrogen

    The heavy isotope 15 N was first discovered by S. M. Naudé in 1929, and soon after heavy isotopes of the neighbouring elements oxygen and carbon were discovered. [37] It presents one of the lowest thermal neutron capture cross-sections of all isotopes. [ 38 ]

  3. Timeline of states of matter and phase transitions - Wikipedia

    en.wikipedia.org/wiki/Timeline_of_states_of...

    2000 – CERN announced quark-gluon plasma, a new phase of matter. [28] 2023 – Physicists from US and China discovered a new state of matter called the chiral bose-liquid state [29] 2024 – Harvard researchers working with Quantinuum announced a new phase of matter non-Abelian topological order [30]

  4. Daniel Rutherford - Wikipedia

    en.wikipedia.org/wiki/Daniel_Rutherford

    Rutherford discovered nitrogen by the isolation of the particle in 1772. [ 12 ] [ 13 ] When Joseph Black was studying the properties of carbon dioxide , he found that a candle would not burn in it. Black turned this problem over to his student at the time, Rutherford.

  5. Discovery of chemical elements - Wikipedia

    en.wikipedia.org/wiki/Discovery_of_chemical_elements

    The two discovered a new element in a molybdenum sample that was used in a cyclotron, the first element to be discovered by synthesis. It had been predicted by Mendeleev in 1871 as eka-manganese. [171] [172] [173] In 1952, Paul W. Merrill found its spectral lines in S-type red giants. [174]

  6. Timeline of particle discoveries - Wikipedia

    en.wikipedia.org/wiki/Timeline_of_particle...

    1932 Antielectron (or positron), the first antiparticle, discovered by Carl D. Anderson [13] (proposed by Paul Dirac in 1927 and by Ettore Majorana in 1928) : 1937 Muon (or mu lepton) discovered by Seth Neddermeyer, Carl D. Anderson, J.C. Street, and E.C. Stevenson, using cloud chamber measurements of cosmic rays [14] (it was mistaken for the pion until 1947 [15])

  7. First nitrogen execution was a 'botched' human experiment ...

    www.aol.com/news/first-nitrogen-execution...

    An Alabama death row inmate filed a lawsuit Thursday that challenges the constitutionality of nitrogen gas executions, arguing that the first person in the nation put to death by that method shook ...

  8. History of atomic theory - Wikipedia

    en.wikipedia.org/wiki/History_of_atomic_theory

    These compounds are known today as nitrous oxide, nitric oxide, and nitrogen dioxide respectively. "Nitrous oxide" is 63.3% nitrogen and 36.7% oxygen, which means it has 80 g of oxygen for every 140 g of nitrogen. "Nitrous gas" is 44.05% nitrogen and 55.95% oxygen, which means there is 160 g of oxygen for every 140 g of nitrogen.

  9. Mystery of ‘Pinnacle Man’ found frozen in a cave solved after ...

    www.aol.com/mystery-pinnacle-man-found-frozen...

    A man found frozen in a Pennsylvania cave in 1977 has finally been identified, closing the book on a nearly 50-year-long mystery. ... Ian Keck of the Pennsylvania State Police found the lost ...

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