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So far Cavallera has created 367 blog entries.

The biggest gold coin of the world !

By |2018-11-13T16:11:58+01:00September 17th, 2015|Actuality|

The largest gold coin in the world is currently the part of one million Australian dollar Australian Nugget. Created by the mint in Perth in 2011, the piece does not weigh less than one ton (1012 kg to be exact), the nominal value is less than the value of weight in gold. Lire Lire la suite [...]

What is a thermocouple ?

By |2018-11-13T16:12:07+01:00September 12th, 2015|Actuality|

Thermocouples have a lot application in industry and are composed with severals metals from Platinum Metal Group (PMG), such as platinum and rhodium. This article explain what is a thermocouple and the different type of thermocouple, such as type S, type R or type B. Lire la suite […]

Karats in gold… a really old story.

By |2018-11-10T16:18:39+01:00July 12th, 2015|Non classé|

The usage of carat in gold is an old story… a very old one. One day, you may ask yourself this obvious question: Why did we divide gold into 24 shares? Why did we call this unit or proportion “carat/karat (shortened K)” back then? Where do 24K, 18K, 14K and 9K categories come from? Lire la suite [...]

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