Fog vs. Mist

21 January 1793 - After being found guilty of treason by the French Convention, Louis XVI of France is executed by guillotine.
- Remaining days: 344

I went downtown to sign the contract for a job next semester in one of the restaurants from the university nearby.

So this morning on my way to the job service it was all misty around the St. Peter's Square. Or was it foggy? You can see my faculty 'Arts and Philosophy' rising up above the fog in the left and in the middle the 'Boekentoren' (Dutch for Book Tower) designed by the Belgian architect Henry van de Velde.

It is part of the Ghent University Library and currently houses 3 million books. Together with Victor Horta and Paul Hankar he could be considered as one of the main founders and representatives of Art Nouveau in Belgium. During the Second World War the tower was taken by the German army because of the great city and airplane view they had over there.
(Source: Wikipedia)

Regarding the fog vs. mist issue: The only difference between fog and mist is density and its effect on visibility. A cloud that reduces visibility to less than 1 km (about 1,094 yards or 0,62 miles) is called fog, whereas it's called mist if the visibility range is between 1 and 2 km.
(Source: Diffen)

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