Deuterium (or hydrogen-2, symbol 2H or deuterium, also known as heavy hydrogen) is one of two stable isotopes of hydrogen (the other being protium, or hydrogen-1). The nucleus of a deuterium atom, called a deuteron, contains one proton and one neutron, whereas the far more common protium has no neutrons in the nucleus. Deuterium has a natural abundance in Earth's oceans of about one atom in 6420 of hydrogen. Thus deuterium accounts for approximately 0.0156% (0.0312% by mass) of all the naturally occurring hydrogen in the oceans, while protium accounts for more than 99.98%. The abundance of deuterium changes slightly from one kind of natural water to another (see Vienna Standard Mean Ocean Water). The name deuterium is derived from the Greek deuteros, meaning "second", to denote the two particles composing the nucleus. Deuterium was discovered and named in 1931 by Harold Urey. When the neutron was discovered in 1932, this made the nuclear structure of deuterium obvious, and Urey won the Nobel Prize in 1934 "for his discovery of heavy hydrogen". Soon after deuterium's discovery, Urey and others produced samples of "heavy water" in which the deuterium content had been highly concentrated. Deuterium is destroyed in the interiors of stars faster than it is produced. Other natural processes are thought to produce only an insignificant amount of deuterium. Nearly all deuterium found in nature was produced in the Big Bang 13.8 billion years ago, as the basic or primordial ratio of hydrogen-1 to deuterium (about 26 atoms of deuterium per million hydrogen atoms) has its origin from that time. This is the ratio found in the gas giant planets, such as Jupiter. The analysis of deuterium–protium ratios in comets found results very similar to the mean ratio in Earth's oceans (156 atoms of deuterium per million hydrogen atoms). This reinforces theories that much of Earth's ocean water is of cometary origin. The deuterium–protium ratio of the comet 67P/Churyumov–Gerasimenko, as measured by the Rosetta space probe, is about three times that of Earth water. This figure is the highest yet measured in a comet. Deuterium–protium ratios thus continue to be an active topic of research in both astronomy and climatology. (Wikipedia).
Neutron Generators using Particle Accelerators
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From playlist Physics
A living creature comes out of gallium ... an alien lifeform. This video shows how to fight back when these start coming from the future. Even crazier video "Mercury - an alien metal" https://youtu.be/Bq1awUmqZcM Follow us here https://www.instagram.com/superaccu/ Ionic liquids https://yo
From playlist Science
Acids and Bases - Short Revision || CBSE Science || || Infinity Learn Class 9&10
Acids and bases are two types of substances that are fundamental to chemistry. An acid is a substance that donates protons (hydrogen ions, H+) to a solution, while a base is a substance that accepts protons or donates hydroxide ions (OH-) to a solution. There are several ways to define and
From playlist Shorts
I obtain a sample of pure heavy water and give it a taste test. heavy water playlist: https://www.youtube.com/playlist?list=PLKhDkilF5o6_MTogGYYdEetWJgglcqhCr Help me make videos by donating here: https://www.patreon.com/CodysLab
From playlist Homemade Heavy Water
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From the Physical Science course by Derek Owens. Eighth grade level. Distance Learning courses are available at http://www.derekowens.com
From playlist Physical Science - Atoms
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From playlist Selenium Tutorial Videos - Automation Testing Tool
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From playlist Selenium Tutorial Videos - Automation Testing Tool
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Dihydrogen Monoxide is a chemical that is available to small children without special permission. It can be lethal in small doses, and causes millions of dollars in damage to the environment and personal property each year. Be careful when dealing with this dangerous chemical.
From playlist April Fool's Day Favorites
How We Learned That Water Isn't An Element
Keep exploring at https://brilliant.org/MinuteEarth. Get started for free, and hurry – the first 200 people get 20% off an annual premium subscription. For thousands of years, water was thought to be an element. That is, until some of the greatest chemists in the world managed to crack it
From playlist Scientific Process
Synthesis Workshop: Deuterium + Tritium Labeling with Sara Kopf and Florian Bourriquen (Episode 94)
In this Research Spotlight episode, Sara Kopf and Florian Bourriquen (Beller group) join us to take us through some recent developments in the field of deuterium and tritium labeling of organic molecules. Key paper: Chem. Rev. 2022, 122, 6634-6718. https://doi.org/10.1021/acs.chemrev.1c00
From playlist Research Spotlights
Chemistry 202. Organic Reaction Mechanisms II. Lecture 21. Kinetic Isotope Effects
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From playlist Chemistry 202. Organic Reaction Mechanisms II
A New Way to Achieve Nuclear Fusion: Helion
Sign up to Nebula to support Real Engineering: https://go.nebula.tv/realengineering Watch the extended cuts of this video ad free on Nebula: https://nebula.tv/videos/realengineering-nuclear-fusion-is-changing-helion Links to everything I do: https://beacons.ai/brianmcmanus Get your Rea
From playlist Energy
Chem 203. Lecture 08: NMR Spectroscopy Concepts and Theory, Part 1
Full Chem 203 Playlist: https://www.youtube.com/playlist?list=PLqOZ6FD_RQ7nUiPCa47zSrMWArKAdwfcD UCI Chem 203 Organic Spectroscopy (Fall 2020) Lecture 08: Lecture 08: NMR Spectroscopy Concepts and Theory, Part 1 Instructor: James S. Nowick, Ph.D. License: Creative Commons BY-NC-SA Terms o
From playlist Chemistry 203, Organic Spectroscopy (2020)
Heavy Water - Periodic Table of Videos
We make ice from heavy water - also known as deuterium oxide or D2O - to see if it will sink or float. More links in description below ↓↓↓ Support Periodic Videos on Patreon: https://www.patreon.com/periodicvideos A video on every element: http://bit.ly/118elements More at http://www.pe
From playlist The Prof's Top 10 - Periodic Videos
Thanks to NASA's James Webb Space Telescope (JWST) project and the Space Telescope Science Institute for supporting this video. This video is about the line between Brown dwarfs and gas giant planets (aka super Jupiter's): does it exist? Is it the deuterium-burning threshold? Behavior? Me
From playlist What Fraser's watching
This New Nuclear Battery Could Power Deep Space Missions for Decades
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