consider all elements heavier than helium to be metals. That definition obviously does not jive with the standard chemical
definition of a metal, but a concept called 'metallicity'
argues that from a star (and therefore the universe) formation perspective, extremely high
temperatures and pressures in first generation stars (like our sun) preclude the identification
of distinct elements other than hydrogen and helium. Heavier elements, such as lithium - #3 on the periodic chart and actually
considered a metal in chemistry - are overwhelmingly created after a massive enough hydrogen star collapses and begins fusing
H and He into heavier elements.
These original Kirt's Cogitations™ may be reproduced (no more than
5, please) provided proper credit is given to me, Kirt Blattenberger.
Please click here
to return to the Table of Contents.
Cog·i·ta·tion [koj-i-tey'-shun] – noun: Concerted thought or
reflection; meditation; contemplation.
Kirt [kert] – proper noun: RF Cafe webmaster.
These items are an archive of past Topical Smorgasbord items that have appeared on the RF Cafe homepage. In keeping with the "cafe"
genre, these tidbits of information are truly a smorgasbord of topics. They all pertain to topics that are related to the general engineering
and science theme of RF Cafe. Note: There is also a huge collection of my 'Factoids' (aka 'Kirt's Cogitations') that might interest you as well.
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26 | 27 | 28
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Posted April 7, 2016