Diesmal etwas über historische Metalle .... und Kundenbeschwerden:

Links:

https://www.youtube.com/watch?v=E90K_BhbEtA

https://www.youtube.com/watch?v=o0A9M5wHBA4

https://www.scientificamerican.com/article/ancient-roman-lead-physics-archaeology-controversy/

https://www.scientificamerican.com/article/ancient-roman-lead-melted-down-explore-frontiers-physics/

https://www.upi.com/Science_News/2013/11/29/Use-of-ancient-lead-in-modern-physics-experiments-ignites-debate/10401385765979/

https://www.researchgate.net/publication/245067190_Measurements_on_radioactivity_of_ancient_roman_lead_to_be_used_as_shield_in_searches_for_rare_events

https://www.reddit.com/r/todayilearned/comments/1e3spph/til_that_until_recently_steel_used_for_scientific/

https://www.wearethemighty.com/popular/radioactive-tools-sunken-warships-steel/

https://en.wikipedia.org/wiki/Low-background_steel

https://en.wikipedia.org/wiki/Complaint_tablet_to_Ea-n%C4%81%E1%B9%A3ir

https://thegaze.media/news/the-oldest-complaint-letter-in-human-history-was-written-around-4000-years-ago-in-mesopotamia

https://de.wikipedia.org/wiki/Ea-nasir

https://www.archaeform.de/wordpress/blog/2016/03/30/worlds-oldest-customer-complaint-translated/

https://en.wikipedia.org/wiki/Ur

https://bugzilla.mozilla.org/show_bug.cgi?id=647959