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¦
Chemists have figured out how to keep βthe waveβ of one particular isotope of oxygen β among the most abundant elements on the planet and a crucial building block for materials like glass and ceramics β going during NMR spectroscopy long enough to learn some things about its structure and function. news.osu.edu/scientists-lβ¦
Using carbon and oxygen stable isotope analysis of the teeth of herbivores found in a South African cave, researchers reconstructed the vegetation from the time the animals were alive 2 million years ago. Findings show the interior climate was much wetter than the modern African environment. utoronto.ca/news/prehistoβ¦
Analysis of oxygen isotopes present in fossils suggests three independent acquisitions of warm-bloodedness in the mammalian lineage, likely driven by extreme fluctuations in climate. elifesciences.org/articleβ¦
NASA: Indigenous and exogenous organics and surfaceβatmosphere cycling inferred from carbon and oxygen isotopes at Gale crater nature.com/articles/s4155β¦
The ESA Is Taking Steps to Mine Moon Dust - hypothetical mission would launch by 2025 and focus on lunar regolith (soil). While lunar soil has no organic content, it does contain molecular oxygen and water. It also has helium-3, an isotope that has the potential to be a future energy source popularmechanics.com/spacβ¦
Cretaceous sea-surface temperature evolution: Constraints from TEX86 and planktonic foraminiferal oxygen isotopes sciencedirect.com/scienceβ¦
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¦
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?
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¦
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.
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¦
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¦
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
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¦
Geochemist Minoru Ozima of the Tokyo University discovered that the nitrogen-14/nitrogen-15 isotope ratio in the Apollo lunar samples is very different from that in the solar wind whose blasts drilled these atoms into the lunar soil. The explanation is simpleβthe Apollo's soil was made on earth.
So the explanation for the earthly nitrogen in the Apollo lunar samples now given by scientists is that the nitrogen was blown off the earth by solar winds -before the earth's magnetic field was established. not that the lunar dust was manufactured on Earth.
Last night was Star Wars Night for our local minor league baseball team (ABQ Isotopes). My son thought heβd just march w/ the Stormtroopers for a bit but Vader made his night 1000x better (Iβm not crying, youβre crying). v.redd.it/d4dbd4fqyy131
Explosion of an oxygen station near the hospital, Chelyabinsk (Russia), 10/31/2020 v.redd.it/m59r48lhlfw51
Why is Nuclear Decay a probabilistic event? Are there any environmental influences that can affect the half life of an isotope or is it an intrinsic property?
radioactive isotopes of hydrogen make it spicy
SHINE Moves Closer to Domestic Production of Life-Saving Medical Isotopes finance.yahoo.com/news/shβ¦
Abundancy of isotope greater than 100%?
I am having trouble answering this question and would like some guidance:
Germanium has 5 common isotopes, a sample contains the following:
70Ge (57.4%),Β 72Ge (75.9%),Β 73Ge (21.3%),Β 74Ge (100%),Β 76Ge (21.0%) What is the average atomic mass of the sample?
I just multiplied 70x(0.574) + 72x(0.759) etc. since that is what you normally do. But since the percentages add up to a number higher than 100, should I do anything different? I ended up with 200.39 amu
How does the radioactive isotope of potassium-40 decays to calcium-40?
i thought that usually in this type of process the mass number changes. how can it stay 40?
Strategy& Report: Dutch Ministry DD of medical isotope companies laka.org/docu/boeken/pdf/β¦
TIL that hemp was used to to remove radioactive isotopes from the ground of the Chernobyl nuclear disaster site. leafbuyer.com/blog/why-heβ¦
New radioactive isotope of carbon has been discovered. It has been named after UK Prime minister Theresa May following her interest and endorsement to the project. It's name is _____
