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- Voltage, also known as (electrical) potential difference, electric pressure, or electric tension is the difference in electric potential between two points...25 KB (2,909 words) - 17:42, 17 July 2024
- An electric current is a flow of charged particles, such as electrons or ions, moving through an electrical conductor or space. It is defined as the net...53 KB (6,345 words) - 12:14, 5 August 2024
- Temperature is a physical quantity that quantitatively expresses the attribute of hotness or coldness. Temperature is measured with a thermometer. It reflects...104 KB (12,970 words) - 16:41, 3 August 2024
- Werner Karl Heisenberg (pronounced [ˈvɛʁnɐ kaʁl ˈhaɪzn̩bɛʁk] ; 5 December 1901 – 1 February 1976) was a German theoretical physicist, one of the main pioneers...123 KB (13,584 words) - 16:58, 22 July 2024
- Radioactive decay (also known as nuclear decay, radioactivity, radioactive disintegration, or nuclear disintegration) is the process by which an unstable...95 KB (9,761 words) - 10:12, 7 August 2024
- Space is a three-dimensional continuum containing positions and directions. In classical physics, physical space is often conceived in three linear dimensions...35 KB (4,431 words) - 09:29, 30 July 2024
- A laser is a device that emits light through a process of optical amplification based on the stimulated emission of electromagnetic radiation. The word...114 KB (12,669 words) - 04:09, 31 July 2024
- A gamma ray, also known as gamma radiation (symbol γ ), is a penetrating form of electromagnetic radiation arising from the radioactive decay of atomic...60 KB (7,397 words) - 05:24, 28 July 2024
- In optics, the refractive index (or refraction index) of an optical medium is a dimensionless number that gives the indication of the light bending ability...77 KB (8,706 words) - 17:59, 8 August 2024
- In physics, spacetime, also called the space-time continuum, is a mathematical model that fuses the three dimensions of space and the one dimension of...173 KB (24,123 words) - 14:04, 18 July 2024
- Nuclear fusion is a reaction in which two or more atomic nuclei, usually deuterium and tritium (hydrogen isotopes), combine to form one or more different...97 KB (10,348 words) - 17:36, 6 August 2024
- The expansion of the universe is the increase in distance between gravitationally unbound parts of the observable universe with time. It is an intrinsic...53 KB (6,980 words) - 22:53, 31 July 2024
- X-rays (or rarely, X-radiation) are a form of high-energy electromagnetic radiation. In many languages, it is referred to as Röntgen radiation, after the...105 KB (12,444 words) - 03:17, 2 August 2024
- Infrared (IR; sometimes called infrared light) is electromagnetic radiation (EMR) with wavelengths longer than that of visible light but shorter than microwaves...91 KB (9,117 words) - 09:19, 25 June 2024
- In thermodynamics, heat is the thermal energy transferred between systems due to a temperature difference. In colloquial use, heat sometimes refers to...74 KB (10,916 words) - 12:05, 5 August 2024
- The joule (pronounced /ˈdʒuːl/, JOOL or /ˈdʒaʊl/ JOWL; symbol: J) is the unit of energy in the International System of Units (SI). It is equal to the amount...24 KB (2,775 words) - 21:43, 4 August 2024
- The Standard Model of particle physics is the theory describing three of the four known fundamental forces (electromagnetic, weak and strong interactions...62 KB (7,186 words) - 16:49, 6 August 2024
- Classical mechanics is a physical theory describing the motion of objects such as projectiles, parts of machinery, spacecraft, planets, stars, and galaxies...52 KB (5,830 words) - 01:11, 5 August 2024
- The law of conservation of energy states that the total energy of an isolated system remains constant; it is said to be conserved over time. In the case...46 KB (6,104 words) - 03:54, 1 August 2024
- A neutron star is the collapsed core of a massive supergiant star. It results from the supernova explosion of a massive star—combined with gravitational...113 KB (13,716 words) - 07:45, 29 July 2024