| nebula |
A region of gas and dust in a galaxy. They appear to be fuzzy.
출처: inkido.indiana.edu/a100/glossary1.html
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| nebula |
An area of dust and gas in space. A nearby star can make a nebula shine, either through reflected starlight, such as in the Pleiades, or because energy from the star makes the nebula itself glow as in M42, the Great nebula in Orion. Other types of nebulae are dark or absorption nebula such as the Coalsack; planetary nebulae
출처: outreach.atnf.csiro.au/education/senior/astrophysi...
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| nebulizer |
A machine that turns liquid medication into a mist for inhaling. Normal Breathing: When you breathe in, air is taken in through the nose and mouth. It goes down the windpipe, through the airways, and into the air sacs. When you breathe out, stale air leaves the lungs in the reverse order. There is no difficulty or feeling of shortness of breath with normal breathing.
출처: www.medschool.lsuhsc.edu/asthma_center/glossary.as...
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| nebula |
A cloudy object composed of gas and dust which glows with its own light is called an emission nebula while one illuminated by the starlight of nearby bright stars is a reflection nebula. A cloud of dust which blocks light from star fields or bright nebulae beyond it is a dark nebula.
출처: www.opticalvision.co.uk/content.asp
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| nebula |
A cloud of dense gas and/or dust in interstellar space or surrounding a star. They appear indistinct or fuzzy and the term encompasses a wide variety of phenomena. For example, star forming regions, shells of gas ejected from evolved stars (``planetary nebulae) and the remants of exploded stars (``supernovae'') can all be called ``nebulae''. Before their nature and distances were determined galaxies were termed spiral nebulae.
출처: www.astro.utoronto.ca/~hudon/ast210/210.glossary.h...
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