Search results for "Helium-4" - New World Encyclopedia
From New World Encyclopedia
- possible to calculate the concentration of helium-4, helium-3, deuterium and lithium-7 in the universe as ratios to the amount of ordinary hydrogen, H ...58 KB (8,668 words) - 03:46, 1 October 2023
- 2 (two) is a number, numeral, and glyph that represents the number. It is the natural number A natural number is any number that is a positive ...19 KB (2,775 words) - 06:42, 13 June 2023
- began as a mixture of hydrogen-1 (75 percent) and helium-4 (25 percent) with only traces of other light atoms. All the other elements, including the radioactive ...30 KB (4,559 words) - 22:46, 7 December 2022
- Erwin Rudolf Josef Alexander Schrödinger (August 12, 1887 – January 4, 1961) was an Austrian-Irish physicist who achieved fame for his contributions ...17 KB (2,571 words) - 21:27, 20 March 2024
- Andrei Arsenyevich Tarkovsky (Андре́й Арсе́ньевич Тарко́вский) (April 4, 1932 - December 29, 1986) was a Russian ...16 KB (2,516 words) - 20:10, 26 July 2023
- A quasar (contraction of QUASi-stellAR radio source) is an extremely bright and distant active nucleus of a young galaxy. Quasars were first ...16 KB (2,372 words) - 15:39, 7 December 2022
- Boiling is the process of rapidly converting a liquid to its gaseous (vapor) state, typically by heating the liquid to a temperature called its ...13 KB (2,088 words) - 05:24, 17 November 2023
- Johannes Diderik van der Waals (November 23, 1837 – March 8, 1923) was an outstanding Dutch physicist who was the first to obtain an equation ...10 KB (1,620 words) - 23:19, 22 June 2023
- Nuclear fission is the splitting of the nucleus of an atom into parts (lighter nuclei), often producing photons (in the form of gamma rays), ...31 KB (4,827 words) - 10:09, 11 March 2023
- Mercury is the innermost and smallest planet in the solar system, orbiting the Sun once every 88 days. Its brightness ranges from about -2.0 ...35 KB (5,451 words) - 16:12, 9 November 2022
- 4 (four) is a number, numeral, and glyph that represents the number. It is the natural number A natural number is any number that is a positive ...24 KB (3,319 words) - 06:45, 13 June 2023
- Niobium or columbium (chemical symbol Nb, atomic number 41) is a rare, soft, gray metal. It was discovered in a variety of columbite (now called ...14 KB (1,909 words) - 04:59, 15 November 2022
- The development of the periodic table of the elements parallels the development of science and our understanding of the physical universe. It ...15 KB (2,217 words) - 15:59, 25 January 2023
- A nuclear reactor is a device in which nuclear chain reactions are initiated, controlled, and sustained at a steady rate, as opposed to a nuclear ...45 KB (6,704 words) - 00:40, 17 November 2022
- In the Solar System, Saturn is the sixth planet from the Sun. It is a gas giant (also known as a Jovian planet, after the planet Jupiter), the ...26 KB (3,935 words) - 17:00, 23 December 2022
- In physics and chemistry, an atomic orbital is a region in which an electron may be found within a single atom. J. Daintith, Oxford Dictionary ...33 KB (5,193 words) - 01:09, 18 November 2022
- Electric charge is a fundamental, conserved property of some subatomic particles, such as electrons and protons. There are two opposite types ...14 KB (2,244 words) - 00:13, 13 February 2024
- Gamma rays (γ rays) is the popular name applied to gamma radiation, the most energetic form of electromagnetic radiation and thus the electromagnetic ...16 KB (2,549 words) - 04:20, 18 April 2024
- Basalt is a common, gray to black volcanic rock. It is usually fine-grained due to rapid cooling of lava on the Earth's surface. It may ...16 KB (2,316 words) - 03:22, 1 January 2022
- Astrophysics is the branch of astronomy that deals with the physics of the universe. It involves studies of the physical properties (luminosity ...14 KB (1,947 words) - 18:28, 19 August 2023
