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sunspot    音标拼音: [s'ʌnsp,ɑt]
n. 太阳的黑点,雀斑

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英文字典中文字典相关资料:


  • Sunspot - Wikipedia
    High sunspot activity is celebrated by members of the amateur radio community as a harbinger of excellent ionospheric propagation conditions that greatly increase radio range in the HF bands
  • Sunspots - NASA Science
    This video, captured by NASA’s Solar Dynamics Observatory between July 5 to 11, 2017, shows a sunspot moving across the Sun Like freckles on the face of the Sun, sunspots appear to be small features, but size is relative: The dark core of this sunspot is actually larger than Earth
  • Sunspot regions | Solar activity | SpaceWeatherLive. com
    On this page you'll find an overview of all the visible sunspot regions on the Sun together with their properties, images and the chances on solar flares or proton events
  • Sunspots Solar Cycle - NOAA NWS Space Weather Prediction Center
    Sunspots appear in a wide variety of shapes and forms The darkest area of a sunspot (also the first to be observed) is called the umbrae As the sunspot matures (becomes more intense), a less dark, outlying area of well-defined fibril-like structure develops around the umbrae - called penumbra
  • Sunspots: What are they, and why do they occur? | Space
    According to the University Corporation for Atmospheric Research (UCAR), if you could cut out a standard sunspot from the sun and place it in the night sky, it would appear as bright as a full
  • Sunspots - Center for Science Education
    If you could cut an average sunspot out of the Sun and place it elsewhere in the night sky, it would be about as bright as the full Moon Sunspots have a lighter, outer section called the penumbra and a darker, central region named the umbra
  • Current Sunspots on the Sun
    Explore today's active sunspots on the Sun with real-time data View sunspot regions, magnetic classifications, area in MSH, flare probabilities, and live solar activity updates
  • Sunspot | Solar Flares, Magnetic Fields Sunspots | Britannica
    Sunspot, vortex of gas on the surface of the Sun associated with strong local magnetic activity Spots look dark only by contrast with the surrounding photosphere, which is several thousand degrees hotter
  • Sunspots and Solar Flares - NASA Space Place
    The temperature of a sunspot is still very hot though—around 6,500 degrees Fahrenheit! Why are sunspots relatively cool? It’s because they form at areas where magnetic fields are particularly strong These magnetic fields are so strong that they keep some of the heat within the Sun from reaching the surface
  • What Are Sunspots? - timeanddate. com
    As the first spots of a new cycle appear, they are at the higher latitudes of the Sun, and increase in size and activity until solar maximum —the peak of sunspot activity—is registered





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