{"id":1732,"date":"2018-10-26T13:22:56","date_gmt":"2018-10-26T11:22:56","guid":{"rendered":"https:\/\/arctrain.de\/?p=1732"},"modified":"2018-11-08T10:18:21","modified_gmt":"2018-11-08T09:18:21","slug":"fun-with-ice-take-2-3","status":"publish","type":"post","link":"https:\/\/arctrain.de\/fun-with-ice-take-2-3\/","title":{"rendered":"Fun with Ice, Take 2\/3: Colouring ice cubes from the inside"},"content":{"rendered":"

Hello out there!<\/p>\n

Two and a half weeks ago, I wrote a blog post about why it makes all the difference in the world if there is a pinch of salt in a glass of water or not<\/a>. So, of course, the logical consequence is to write a blog post about why it makes all the difference in the world if there is a pinch of salt in an ice cube or not! A remark before I start: The amount of salt in the ice cube is really tiny. Ocean water in the Arctic has a salinity of 30\u00a0\u2030. When it freezes, most of the salt gets ejected, so that only 5-8 \u2030 of the sea ice are salt. That’s only a tenth of the amount of alcohol which you have in a glass of beer!<\/p>\n

But enough technical description for now, let’s start with the experiment. Here’s what you need (see also Figure 1):<\/p>\n