搜索结果: 1-15 共查到“国际动态 理学 Magnetic Field”相关记录17条 . 查询时间(0.472 秒)
Discovery reveals a reversible magnetic field around a fast radio burst for the first time
快速射电暴 可逆磁场 无线电波闪光
2023/5/15
An international team of researchers has revealed new evidence on the nature of mysterious fast radio bursts (FRBs) – objects in space that produce brief, intense flashes of radio waves from distant g...
When we look out into space, all of the astrophysical objects that we see are embedded in magnetic fields. This is true not only in the neighborhood of stars and planets, but also in the deep space be...
Earth's mantle, not its core, may have generated planet's early magnetic field（图）
Earth's mantle generated planet early magnetic field
2020/3/13
New research lends credence to an unorthodox retelling of the story of early Earth that was first proposed by a geophysicist at the Scripps Institution of Oceanography in La Jolla, Californi...
New research provides evidence of strong early magnetic field around Earth（图）
New research evidence strong early magnetic field around Earth
2020/2/20
Deep within Earth, swirling liquid iron generates our planet's protective magnetic field. This magnetic field is invisible but is vital for life on Earth's surface: It shields the planet from harmful ...
Earth's last magnetic field reversal took far longer than once thought（图）
Earth magnetic field reversal took longer once thought
2019/10/21
Earth's magnetic field seems steady and true -- reliable enough to navigate by. Yet, largely hidden from daily life, the field drifts, waxes and wanes.The magnetic North Pole is currently shifting tow...
With the help of a gigantic cosmic lens, astronomers have measured the magnetic field of a galaxy nearly five billion light-years away. The achievement is giving them important new clues about a probl...
Study finds Earth’s magnetic field ‘simpler than we thought’
Earth’s magnetic simpler than we thought
2017/7/24
Scientists have identified patterns in the Earth’s magnetic field that evolve on the order of 1,000 years, providing new insight into how the field works and adding a measure of predictability to chan...
Magnetic-Field Discovery Gives Clues to Galaxy-Formation Processes（图）
Magnetic-Field Gives Clues Galaxy-Formation
2015/7/13
Astronomers making a detailed, multi-telescope study of a nearby galaxy have discovered a magnetic field coiled around the galaxy's main spiral arm. The discovery, they said, helps explain how galacti...
The Sun's magnetic field warps its environment（图）
The Sun's magnetic field environment astronauts
2010/9/21
The Sun's extended magnetic field provides a vital shield for astronauts; without it they would be left exposed to potentially deadly cosmic rays entering in from outside the solar system. Now, a grou...
Earth's magnetic field older than we thought（图）
Earth's magnetic field the planet's core the ancient field
2010/3/26
Earth's magnetic field, which shields us from the Sun's deadly rays, emerged from the planet's core even earlier in Earth's history than we previously thought. While this field, 3.45 billion years ago...
Oldest Measurement of Earth's Magnetic Field Reveals Battle Between Sun and Earth for Our Atmosphere（图）
Sun and Earth Our Atmosphere Earth's Magnetic Field
2010/3/23
Scientists at the University of Rochester have discovered that the Earth's magnetic field 3.5 billion years ago was only half as strong as it is today, and that this weakness, coupled with a strong wi...
Physicists in the US have become the first to use laser light to make neutral, ultracold atoms behave like charged particles in a magnetic field – even though the atoms have no charge. The set-up coul...
Earth’s magnetic field perturbed by 'electric oceans', claims researcher（图）
Earth’s magnetic field electric oceans electric sea salts
2009/6/15
In a radical rethink of accepted geophysics, new research in the US links variations in the Earth’s magnetic field with the ebb and flow of the world’s oceans. Given the practical importance of these ...
Multipolar dance could flip Earth’s magnetic field（图）
Multipolar dance Earth’s magnetic field the Earth’s magnetic poles
2009/5/4
In this new proposal, it is not the turbulent flow but a second field known as a “quadrupole” that drives the reversal. Leading up to the flipping of the poles, the dipole reduces in intensity as the ...
May 29, 2007，Sound waves escaping the sun’s interior create fountains of hot gas that shape and power a thin region of the sun’s atmosphere which appears as a ruby red "ring of fire" around the moon d...