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  1. de.wikipedia.org › wiki › 238238 – Wikipedia

    Gordian III., Kaiser 238 bis 244. In rascher Folge lösen die römischen Kaiser Maximinus Thrax, Gordian I., Gordian II., Pupienus, Balbinus und Gordian III. einander ab. Das Sechskaiserjahr unter den Soldatenkaisern gilt als ein erster Höhepunkt der so genannten Reichskrise des 3. Jahrhunderts.

    • JaMS-238

      Der JaMS-238 (russisch: ЯМЗ-238, andere Transkriptionen:...

  2. de.wikipedia.org › wiki › Fiat_238Fiat 238 – Wikipedia

    Der Fiat 238 ist ein Kleintransporter mit Vierzylindermotor und Frontantrieb von Fiat, der den Fiat 1100 T ablöste. Er wurde ab September 1966 gebaut und in verschiedenen Variationen angeboten: als Kastenwagen, Kombi, Pritsche, Pritsche mit Doppelkabine, als Kleinbus, Luxusbus, Wohnmobil, Schulbus oder auch als Ambulanzwagen (nur ...

  3. en.wikipedia.org › wiki › Uranium-238Uranium-238 - Wikipedia

    • Nuclear Energy Applications
    • Nuclear Weapons
    • Radium Series
    • Radioactive Dating
    • Health Concerns

    In a fission nuclear reactor, uranium-238 can be used to generate plutonium-239, which itself can be used in a nuclear weapon or as a nuclear-reactor fuel supply. In a typical nuclear reactor, up to one-third of the generated power comes from the fission of 239Pu, which is not supplied as a fuel to the reactor, but rather, produced from 238U. A cer...

    Most modern nuclear weapons utilize 238U as a "tamper" material (see nuclear weapon design). A tamper which surrounds a fissile core works to reflect neutrons and to add inertia to the compression of the 239Pu charge. As such, it increases the efficiency of the weapon and reduces the critical mass required. In the case of a thermonuclear weapon, 23...

    The decay chain of 238U is commonly called the "radium series" (sometimes "uranium series"). Beginning with naturally occurring uranium-238, this series includes the following elements: astatine, bismuth, lead, polonium, protactinium, radium, radon, thallium, and thorium. All of the decay productsare present, at least transiently, in any uranium-co...

    238U abundance and its decay to daughter isotopes comprises multiple uranium dating techniques and is one of the most common radioactive isotopes used in radiometric dating. The most common dating method is uranium-lead dating, which is used to date rocks older than 1 million years old and has provided ages for the oldest rocks on Earth at 4.4 bill...

    Uranium emits alpha particles through the process of alpha decay. External exposure has limited effect. Significant internal exposure to tiny particles of uranium or its decay products, such as thorium-230, radium-226 and radon-222 can cause severe health effects, such as cancer of the bone or liver. Uranium is also a toxic chemical, meaning that i...

  4. en.wikipedia.org › wiki › 238_(number)238 (number) - Wikipedia

    238 (two hundred [and] thirty-eight) is the natural number following 237 and preceding 239. In mathematics

  5. Die Blohm & Voss BV 238 war ein Flugboot des Herstellers Blohm & Voss aus der Zeit des Zweiten Weltkriegs. Es war das schwerste Flugzeug des Krieges, noch einige Tonnen schwerer als die B-29. Der erste Prototyp, die V1, flog erstmals am 11. März 1944, nachdem er am Vortag bereits einen kurzen Hüpfer gemacht hatte.