Historical

Arctowski’s book of optical phenomena in the Antarctic

3.12.2009 5 Marko Riikonen

In 10 March 1897, a scientific research expedition ship Belgica got stuck in ice in the Antarctic waters. On board the ship was a Polish scientist Henryk Arctowski, who made notes of optical phenomena during the ship’s one year and…

Historical

What’s missing from Parry’s drawing?

2.6.2008 0 Marko Riikonen

The famous halo drawing by explorers William Edvard Parry and Edward Sabine does not contain all halos they observed. These missing features are described in their account of the display. First, the parhelic circle was complete with anthelion: “r p,…

Displays

An old halo book available

29.5.2008 1 Marko Riikonen

The almost 300 page book of halos, “Mémoire sur Les Halos et les Phénoménes Optiques qui les accompagnent”, by Auguste Bravais, is available for download ( 1 ). The digital copy is given by Google. The book, which is from…

Displays

Wilson’s 1911 sketch of a snow surface halo

23.5.2008 0 kiricsi

The sketch was made by Edward Adrian Wilson (1872-1912), the English polar explorer. He drew the observation on 14 November 1911 in Antarctica, a few months before he died in Scott’s final expedition. The drawing can be found in The…

Historical

Arctowski’s book of optical phenomena in the Antarctic

What’s missing from Parry’s drawing?

An old halo book available

Wilson’s 1911 sketch of a snow surface halo

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