China’s artificial sun reaches fusion temperature: 100 million degrees
In a breakthrough for nuclear fusion research, scientists at China's Experimental Advanced Superconducting Tokamak (EAST) reactor have produced temperatures necessary for nuclear fusion on Earth.
- The EAST reactor was able to heat hydrogen to temperatures exceeding 100 million degrees Celsius.
- Nuclear fusion could someday provide the planet with a virtually limitless supply of clean energy.
- Still, scientists have many other obstacles to pass before fusion technology becomes a viable energy source.
Scientists in China have reported a major breakthrough in the quest for nuclear fusion technology, which would harness power through the same processes that occur within stars.
At the Experimental Advanced Superconducting Tokamak (EAST) reactor in Hefei, China, researchers managed to heat hydrogen within the 'artificial sun' to a temperature of more than 100 million degrees Celsius, or 212 million degrees Fahrenheit, at which point it becomes plasma. The temperatures inside EAST are actually about seven times hotter than the center of the sun, where the added pressure from gravity allows for fusion to occur.
On Earth, extreme temperatures are necessary to produce nuclear fusion, which occurs when two nuclei come together to form a heavier nucleus. The fusion process releases vast amounts of heat and energy, the results of which we can see when we look up at the Sun, or any star in the night sky.
Credit: EAST Team
The opposite of fusion is nuclear fission, which occurs when the nuclei of atoms split in a chain reaction. This process also releases extraordinary amounts of energy, and it's currently used in nuclear weapons and power plants worldwide. However, nuclear fission leaves behind dangerous radioactive waste. Nuclear fusion is relatively clean.
That's partly why scientists worldwide have been racing for years to develop a safe and reliable way to produce the conditions necessary for nuclear fusion, which in theory could someday give the world a virtually limitless supply of clean energy. The recent success at EAST represents an important step toward that goal.
Still, while the recent achievement at the EAST reactor proves that the 'artificial sun' can produce the extreme temperatures necessary for nuclear fusion, and also allowed researchers to study how plasma reacts at such temperatures, scientists still have many milestones to cross before the technology could possibly become a safe and reliable option for limitless, clean energy. Those obstacles include finding an abundant fuel source, maintaining stability in reactors for more than seconds at a time, and scaling the technology to become commercially viable.
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Who is to blame for the U.S.'s dismal college graduation rate? "Radical" educator Dennis Littky has a hunch.
- COVID-19 has magnified the challenges that underserved communities face with regard to higher education, such as widening social inequality and sky-high tuition.
- At College Unbound, where I am president, we get to know students individually to understand what motivates them, so they can build a curriculum based on goals they want to achieve.
- My teaching mantra: Everything is permitted during COVID-19. Everything is permitted during COVID-19. Everything is permitted during COVID-19.
Astronomers spot periodic lights coming from near the black hole at the center of our galaxy.
- Astronomers in Japan observe periodic lights coming from the region near the black hole at the center of our galaxy.
- The twinkling may be produced by hot spots in the accretion disk around the black hole.
- The mysterious region studied features extreme gravity.
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Neo's superhuman powers were only inside of The Matrix. The outside world offered a different reality.
- The "red pill" came into prominence as a way to break free of mental slavery in the 1999 movie, "The Matrix."
- In a new essay, Julian Walker points out Neo's powers only worked inside of the simulation—reality is a different story.
- The red vs blue pill question is a pop culture phenomenon, often used in questionable circumstances.