Search results for "Helium-4" - New World Encyclopedia
From New World Encyclopedia
- The Kelvin scale is a thermodynamic (absolute) temperature scale. The zero position on this scale is known as absolute zero, which is defined ...15 KB (2,316 words) - 17:20, 5 October 2022
- as a helium white dwarf composed chiefly of helium-4 nuclei. Owing to the time this process takes, it is not thought to be the origin of observed ...72 KB (10,792 words) - 18:14, 4 May 2023
- An aerogel is a low-density solid-state material derived from a gel in which the liquid component of the gel has been replaced with gas. The ...18 KB (2,574 words) - 05:49, 16 June 2023
- Electronegativity is one of the fundamental concepts for an understanding of chemical bonding. The first modern definition was suggested by Linus ...16 KB (2,171 words) - 15:58, 13 February 2024
- A star is a massive, luminous ball of plasma that is held together by its own gravity. The nearest star to Earth is the Sun, which is the source ...80 KB (12,078 words) - 15:50, 27 April 2023
- Carlsbad Caverns National Park is a United States National Park located in the southeastern corner of New Mexico near the city of Carlsbad, where ...19 KB (2,927 words) - 15:25, 27 November 2023
- Curium (chemical symbol Cm, atomic number 96) is a radioactive, metallic, transuranic element "Transuranic elements" are the chemical ...10 KB (1,354 words) - 06:46, 12 January 2024
- Californium (chemical symbol Cf, atomic number 98) is a chemical element in the periodic table. A radioactive transuranic element, ...11 KB (1,466 words) - 18:27, 25 November 2023
- The International Astronomical Union (IAU) defines "planet" as a celestial body that, within the solar system,[http://www.iau.org/news/press ...37 KB (5,416 words) - 07:49, 24 November 2022
- Uranus is the seventh planet from the Sun. It is the third largest by diameter and fourth largest by mass. Uranus is similar in composition to ...17 KB (2,530 words) - 13:36, 3 May 2023
- 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
- 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
- Category:Public number=6 | symbol=C | name=carbon | left=boron | right=nitrogen | above=- | below=Si | color1=#a0ffa0 | color2=black ...21 KB (2,997 words) - 22:12, 25 November 2023
- Chromatography (from Greek χρώμα chroma, meaning "color") is the collective term for a family of laboratory techniques for the ...17 KB (2,480 words) - 21:51, 10 December 2023
- Ernest Rutherford, 1st Baron Rutherford of Nelson OM PC FRS (August 30, 1871 - October 19, 1937), widely referred to as Lord Rutherford, was ...17 KB (2,514 words) - 19:33, 13 February 2024
- Gas is one of the four major states or phases of matter, along with solid, liquid, and plasma. Each state is characterized by distinct physical ...20 KB (3,107 words) - 04:37, 18 April 2024
- A galaxy is a massive, gravitationally bound system consisting of stars, an interstellar medium of gas, plasma, and dust, and dark matter.L.S ...57 KB (8,514 words) - 03:49, 18 April 2024
- Distillation is a method of separating chemical substances based on differences in their volatilities. It usually forms part of a larger chemical ...29 KB (4,405 words) - 15:30, 29 January 2024
- The photoelectric effect is a quantum electronic phenomenon in which electrons are emitted from matter after the absorption of energy from electromagnetic ...23 KB (3,443 words) - 04:26, 24 November 2022
- Scuba diving is the act of swimming underwater while using a self-contained breathing apparatus. By carrying a source of compressed air, the ...20 KB (3,196 words) - 02:37, 21 April 2023
- Activated carbon (also called active carbon, activated charcoal, or activated coal) is a form of carbon that has been processed to make it extremely ...23 KB (3,406 words) - 05:41, 15 June 2023
- A subatomic particle is a particle smaller than an atom. It may be either an elementary (or fundamental) particle, or a composite particle, also ...20 KB (3,162 words) - 21:09, 26 February 2023
