Živo srebro

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ŽIVO SREBRO

Edina tekoča kovina – živo srebro je izjemno škodljiva in v obliki organskih spojin tudi strupena. Prav zaradi tega so ga v industriji nadomeščali z drugimi snovmi. Živo srebro se je in se ponekod še danes uporablja za proizvodnjo industrijskih kemikalij, v elektronskih napravah, v teleskopih, pa tudi v varčnih sijalkah, saj je dober prevodnik električnega toka. Raztaplja zlato, cink, aluminij in druge kovine ter tvori amalgame (lat. zlitine z živim srebrom). (več  >>>)

THE MERCURY

The mercury evaporates from the ore at high temperatures and thickens again in the cold. In ores it mostly occurs as a toxic cinnabarite. The metal is extremely toxic, and mercury poisoning is also caused by all water-soluble mercury compounds. It is because of this property that the industry is starting to replace it with other raw materials.(more >>>)

Ljubljanica v srednjem in novem veku

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Ljubljanica v srednjem in novem veku

Ljubljanica ni velika reka, ves njen tok meri le 43 km, vendar je že v najstarejših časih najimenitnejša vodna cesta na Kranjskem. O čolnarstvu piše tudi Valvasor – Ljubljanica je polna čolnov, ki prevažajo vsakovrstno blago, ki prihaja iz Italije in se pošilja v Italijo. V pisnih virih se omenja letnico 1489, ko cesar Friderik podeli velikim čolnarjem poseben privilegij – svoboščine za plovbo po Ljubljanici. (VEČ >>>)

Ljubljanica in the Middle Ages and in the Moderen Times

The Ljubljanica is not a large river, its entire course measures only 43 km, but it has been the most remarkable waterway in Carniola since ancient times. Valvazor also writes about boating – the Ljubljanica is full of boats that transport all kinds of goods that come from Italy and are sent to Italy. Written sources mention the year 1489, when Emperor Frederick granted large boatmen a special privilege – the freedom to sail on the Ljubljanica. (MORE >>>)