Figure 12 Evolution of the tarnishing layer as function of time with SEM-FIB.
East declined to comment on Kaneria, but said it was very difficult for him to be sympathetic to Westfield because he had "caused the club so much discomfort and for a certain period of time tarnished the reputation of the club".
Gerrard travels to Stockholm as the only member of England's so-called "Golden Generation" - a title tarnished by the passage of time and persistent under-achievement - guiding the new young breed such as Arsenal's Jack Wilshere, Manchester United midfield man Tom Cleverley, teenage Liverpool team-mate Raheem Sterling and Crystal Palace's emerging tyro Wilfried Zaha.
Unlike other precious metals such as gold and platinum, silver is known to tarnish with time forming Ag2S when exposed to low concentrations (<1 ppb) of H2S in ambient environments [1 3].
But Knut's star had already started to tarnish at the time of his death.
Dremel tools help but you will still deal with tarnish as time goes on.
Such effects of silver tarnishing, by time, are also known in the literature.
Versailles, however, remains a symbol still: of magnificence brought low, of time's tarnishing.
You sense that persistence in Christoph Waltz, whose silver tongue, deployed so suavely in "Django Unchained" and "Inglourious Basterds," sounds tarnished by time, in the mouth of Qohen Leth.
Figure 11 SEM images of the evolution of the tarnish layer over time after 3 min (a), 9 min (b), 60 min (c) and 300 min (d).
If your coins tarnish, avoid dipping the silver into a cleaning solution for a long period of time.
