Search results for "Helium-4" - New World Encyclopedia
From New World Encyclopedia
- X-ray astronomy is an observational branch of astronomy that focuses on the study of celestial objects based on their X-ray emissions. These ...11 KB (1,662 words) - 14:15, 20 May 2023
- Infrared astronomy is the branch of astronomy and astrophysics that studies objects as they would appear in the infrared (IR) region of the electromagnetic ...11 KB (1,589 words) - 19:23, 5 March 2024
- of alpha particles (corresponding to nuclei of helium-4). Alpha decay has been observed (in 2003) in only 180W, the lightest and rarest of these isotopes ...17 KB (2,431 words) - 18:45, 2 May 2023
- A chemical element, often called simply element, is the class of atoms which contain the same number of protons. An older definition refers to ...10 KB (1,624 words) - 14:39, 5 December 2023
- The Solar system (or solar system) Capitalization of the name varies. The IAU, the authoritative body regarding astronomical nomenclature, specifies ...60 KB (9,448 words) - 15:09, 27 April 2023
- Cosmic rays are energetic particles originating from space that impinge on Earth's atmosphere. Almost 90 percent of all the incoming cosmic ...37 KB (5,720 words) - 08:13, 10 January 2024
- Fuel is any material that is burned or altered to obtain energy. Fuel releases its energy either through chemical means, such as combustion, ...10 KB (1,556 words) - 00:50, 18 October 2022
- In astrophysics, weakly interacting massive particles, or WIMPs, are hypothetical particles serving as one possible solution to the dark matter ...10 KB (1,576 words) - 23:22, 3 May 2023
- A laser (an acronym for Light Amplification by Stimulated Emission of Radiation) is an electronic-optical device that emits coherent radiation ...41 KB (6,333 words) - 06:55, 4 March 2023
- Category:Public [[Image:Weatheringcartoon.jpg|thumb|right|400px|This illustration shows various components of space weathering]] Space weathering ...10 KB (1,503 words) - 17:14, 14 October 2022
- 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
