The βCalutron Girlsβ, a group of young women employed by the Manhattan Project to monitor a calutron, a mass spectrometer that separated uranium isotopes for use in the first atomic bomb, Oak Ridge, Tennessee, 1945
TIL The earth's internal temperature stays generally constant due to heat from radioactive decay of isotopes in the mantle and crust. Bonus: Uranium comes from Supernovae or merging Neutron Stars en.wikipedia.org/wiki/Earβ¦
"you put a table spoon of this shit in a glass and 50 table spoons of sugar and stir like you're running the Iranian uranium enrichment program but that bitter foul isotope sits at the top of the milk entirely and totally unstirrable" reddit.com/r/WatchPeopleDβ¦
Abrupt global-ocean anoxia during the Late OrdovicianΓ’ΒΒearly Silurian detected using uranium isotopes of marine carbonates pnas.org/content/115/23/5β¦
The βCalutron Girlsβ, a group of young women employed by the Manhattan Project to monitor a calutron, a mass spectrometer that separated uranium isotopes for use in the first atomic bomb, Oak Ridge, Tennessee, 1945
In 2011 Michio Kaku's Physics of the Future talked about Laser Isotope Separation for enriched uranium and the lower bar to nuclear weapons this afforded to developing nations. Is it any closer to fruition half a decade later?
Born today : August 8th - Ernest Lawrence, Physicist, Nobel Laureate, "for his invention, utilization, and improvement of the cyclotron atom-smasher", "worked on uranium-isotope separation for the Manhattan Project." en.wikipedia.org/wiki/Ernβ¦
Uranium isotopes in ancient grains indicate early Earth was less hellish than textbook descriptions chemistryworld.com/news/uβ¦
Evidence of microalgal isotopic fractionation through enrichment of depleted uranium nature.com/articles/s4159β¦
There is nothing depleted about "Depleted Uranium", it is just a different a different isotope 238 and in fact lasts longer with a 4.5 billion half-life than the 234 or 235 isotope youtube.com/watch?v=P-8Plβ¦
Evidence of microalgal isotopic fractionation through enrichment of depleted uranium nature.com/articles/s4159β¦
Shortages expected as McMaster becomes the worldβs only supplier of medical isotope used to treat prostate cancer thestar.com/news/gta/2019β¦
Shortages expected as McMaster becomes the worldβs only supplier of medical isotope used to treat prostate cancer thestar.com/news/gta/2019β¦
A team of researchers has compiled the first and only evidence that narwhals and beluga whales can breed successfully. DNA and stable isotope analysis of an anomalous skull from the Natural History Museum of Denmark has allowed researchers to confirm the existence of a narwhal-beluga hybrid.
TIL nuclear weapons testing artificially altered the proportion of the carbon isotopes in the atmosphere, making radiocarbon dating after 1945 likely to be unreliable. en.wikipedia.org/wiki/Befβ¦
Rocks aged 3.24 billion years reveal the Earth may have had absolutely no surface land at at least one point in its early history. The rock samples contain oxygen isotopes consistent with an entirely oceanic environment, suggesting that Earth was once composed of one giant, globe-spanning ocean. inverse.com/science/3-bilβ¦
By measuring iron isotopes, researchers from the University of Copenhagen have shown that our planet originally formed much faster than previously thought. This finding provides new insights on both planetary formation and the likelihood of water and life elsewhere in the universe. news.ku.dk/all_news/2020/β¦
No star, no problem: Radioactivity could make otherwise frozen planets habitable | Warming a planet enough to liquify water requires roughly 1000 times Earthβs abundance of both types of radioactive isotopes, Lingman and Loeb report in The Astrophysical Journal Letters sciencemag.org/news/2020/β¦
Ellen Gleditsch was a Norwegian radiochemist and Norway's second female professor. Starting her career as an assistant to Marie Curie, she became a pioneer in radiochemistry, establishing the half-life of radium and helping demonstrate the existence of isotopes.
TIL Carbon dating anything past the 1950's is likely to be unreliable because of the nuclear weapons testing artificially altering the proportion of carbon isotopes in the atmosphere en.wikipedia.org/wiki/Befβ¦
[self] Iβm pretty psyched. I just ordered some tritium to make the top of my staff glow. For those of you who donβt know. Tritium is an isotope that keeps glowing for 10 to 15 years without any power source. Itβs completely luminescent!!! Canβt wait to show you updated pictures!!!
Scientist Jacques Vallee analysis of UFO metamaterials: βEngineered purposely by somebody or something, either on Earth or off with ability to separate isotopes and recombine them in different ratios...but we couldnβt do that today... these are not natural ratios on Earth or the solar system.β youtu.be/CnPHt7zfd0I
Isotopes Square. *I'm hoping to buy some of the "Cheering Crowd" and "Rude Crowd" decorations next time they appear to fill the spectator sections
Australia has a huge shortage of the medical isotope needed for scans newscientist.com/article/β¦
TIL that Astatine is the rarest naturally occurring element in the Earth's crust; its most stable isotope has a half-life of only 8 hours. en.wikipedia.org/wiki/Astβ¦
By measuring iron isotopes, researchers from the University of Copenhagen have shown that our planet originally formed much faster than previously thought. This finding provides new insights on both planetary formation and the likelihood of water and life elsewhere in the universe. news.ku.dk/all_news/2020/β¦
It seems Bob Lazar DID state the isotope of 115.
There are a few people who have queried why Bob Lazar knows the atomic number of the spacecraft "fuel" (number of protons - 115), but never mentions the mass number (protons + neutrons). This information would be useful because the theory of an island of stability is predicated on getting the number of protons and neutrons correct - thus far, all isotopes of 115 produced are unstable.
Well, there is a diary of Joe Vaninetti (one of Bob's close friends circa 1989) online. This diary notes down information Bob appears to have offered over 8 or so months. This diary states that the atomic weight of 115 is 271.
This would put the number of neutrons at 156. This is basically as far away from the theorized magic neutron numbers of 126 and 184 as you could get. If a 115 sample is to be stable, it is assumed that the neutron shells will be closed at a neutron number of 184. Of course, humans may be way off with our theories on the island of stability...
EDIT: the clowns on r/ufos censored this post on their sub. Why would they do this?
Researchers, analyzing stable isotopes and trace elements from a fast-growing stalagmite in the Han-sur-Lesse cave system, Belgium, have found clear evidence of increasingly dry conditions and anthropogenic activity over the past 4 centuries. eos.org/articles/past-seaβ¦
colorized photo of abandoned transitive-borran reactor. tragic accident, always remember not to heat an ip19 isotope to 340 kelvin
Do isotopes of the same element have the same emission spectrum?
For example does hydrogen and deuterium have the same electron energy levels or do they depend on neutrons too?
Cooked a corn dog for 5 minutes last night and a minute and a half today. I present to you, the corn dog isotope of carbon
Radithor was a patent medicine that consisted of triple distilled water containing at a minimum 1 microcurie (37 kBq) each of the radium 226 and 228 isotopes. en.wikipedia.org/wiki/Radβ¦
What is Thanos' favorite hydrogen isotope?
Tritium, because it has an half-life.
TIL that bananas are slightly radioactive due to certain caesium isotopes. Therefore you should never eat more than 600 bananas per second to minimze the risk of a harmful radiation dose. mcgill.ca/oss/article/youβ¦
Scientists identify 2 late Neanderthals as being herbivore meat eaters (not fish) for one adult, and a 1 year old child whose mother was also a meat eater - by studying nitrogen isotope ratios of single amino acids in collagen (tooth for adult for 4 to 8 year period, and bone for 1 year old) pnas.org/content/early/20β¦
Economic diversification supported the growth of Mongoliaβs nomadic empires. New study using stable isotope analysis demonstrates the complexity of dietary economies in the Xiongnu and Mongol Empires. nature.com/articles/s4159β¦
[Article] The Pb isotope evolution of Bulk Silicate Earth: Constraints from its accretion and early differentiation history
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DOI/PMID/ISBN: 10.1016/j.gca.2019.12.021
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[URL]https://www.sciencedirect.com/science/article/abs/pii/S0016703719307781
Climate change may be behind fall of ancient empire, say researchers | Dramatic shift from wet to dry climate could have caused crop failure in Neo-Assyrian empire; trends were backed up by patterns in carbon isotope data, with a range of data from various caves and lakes across what was the empire theguardian.com/science/2β¦
TIL the inventor of the Erector Set also released an "Atomic Energy Laboratory" that included real uranium ore. One suggested activity was to play "hide and seek with the gamma ray source" by using the included Geiger counter to find a radioactive sample hidden in a room. en.wikipedia.org/wiki/Gilβ¦
Fukushima: Lessons learned from a case of soil decontamination. One of the cesium isotopes (137Cs) has a half-life of 30 years, it constitutes the highest risk to the local population in the long term, in the absence of decontamination it will remain in the environment for around three centuries. eurekalert.org/pub_releasβ¦
