Did you know you can just ... buy uranium online? It's true! Here's why it's safe, how to do it, and our favorite Amazon reviews from satisfied customers.
U-238 is a radioactive metal that produces alpha and beta particles. In its solid form, it is not particularly dangerous because its half-life is 4.5 billion years, meaning that the atomic decay is very slow. Depleted uranium is used, for example, in boats and airplanes as ballast. The ...
Examining the isotope ratios (assuming they know the half-life of uranium-238), they could then deduce how long the sample had been in space. What music will the aliens hear when they play the record? Mostly traditional music from a variety of cultures, such as Native Americans chants, ...
This is often the process used in nuclear weapons. Nuclear fission results in radioactive nuclear waste in the form of the daughter isotopes produced by the splitting of the uranium or plutonium, which often decay with half-lives of very long timescales, and therefore disposing of this waste ...
To find out, geochemists measure the age of the old lava, using the slow but steady radioactive decay of uranium-238 to lead-206 in tiny zircon crystals created by the eruptions. New, very precise measurements of the volcanic rocks date them bang-on with the mass extinctions: the Siberian...
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Uranium-236 is too unstable to hang around for long so it splits apart into two much smaller atoms, barium and krypton, releasing quite a lot of energy and firing off three spare neutrons at the same time.Now the brilliant thing is that the spare neutrons can crash into other uranium-...
Finally, the design must allow as much of the material as possible to be fissioned before the bomb explodes. This is accomplished by confining the fission reaction within a dense material called a tamper, which is usually made of uranium-238. The tamper gets heated and expanded by the fissio...
The half-life of an element is 21 hours. How long would it take 320 grams of the same element to decay to 2.5 grams?Radioactive Decay:The decay of a radioactive isotope "A" for a chemical element follows the kinetics of a first-order che...
The small amount that gets absorbed, though, spreads throughout the body. It is most likely to accumulate in the bones or the kidneys. Uranium can remain in bones for a long time; the half-life of uranium in bone tissue is 70–200 days. Uranium that settles in other tissue leaves the...