Contact
How to shop
Delivery
Shopping guide
English
387 b
Up to 30 days for returns
Customers also purchased
/
Paperback
64.17
€
/
Paperback
12.36
€
/
Adobe ePub DRM
7.09
€
/
Calendar
28.48
€
/
Game
34.36
€
/
Hardback
208.85
€
High Quality Content by WIKIPEDIA articles! A corona is a type of plasma "atmosphere" of the Sun or other celestial body, extending millions of kilometers into space, most easily seen during a total solar eclipse, but also observable in a coronagraph. The Latin root of the word corona means crown. During a total solar eclipse, the solar corona can be seen with the naked eye. The high temperature of the corona gives it unusual spectral features, which led some to suggest, in the 19th century, that it contained a previously unknown element, "coronium". These spectral features have since been traced to highly ionized Iron (Fe-XIV) which indicates a plasma temperature in excess of 106 kelvin. Light from the corona comes from three primary sources, which are called by different names although all of them share the same volume of space. The K-corona (K for kontinuierlich, "continuous" in German) is created by sunlight scattering off free electrons; Doppler broadening of the reflected photospheric absorption lines completely obscures them, giving the spectral appearance of a continuum with no absorption lines.
About the book
English
Give this book today
It's easy
1 Add to cart and choose Deliver as present at the checkout 2 We'll send you a voucher 3 The book will arrive at the recipient's addressYou might also be interested in
/
Paperback
15.81
€
/
Hardback
186.24
€
/
Paperback
8.61
€