The Papophoplon in 1 minute
Just a short presentation (you scroll, you choose): Brief recap: Sundials indicate true solar time. There are three adjustements to convert it to the time
April 27, 2026
Just a short presentation (you scroll, you choose): Brief recap: Sundials indicate true solar time. There are three adjustements to convert it to the time
Since 1901, the Lépine Competition has been showcasing passionate inventors, both amateur and professional, who devise ingenious solutions to improve our daily lives. It does
The back of the Papophoplon is only needed if you’re using the instrument somewhere other than the location for which it was designed. It features
If you do not have a physical papophoplon, you can still find out the difference between legal time (the time on your watch) and solar
In this article, we explain the three adjustments made by the Papophoplon. 1. Summer time or winter time? The first difference between solar time and
How to convert solar time to clock time? Frustrated by looking at a sundial and finding that it doesn’t show the same time as your
Place the glass flat, with the eyepiece facing the Sun. On the side oppposte to the Sun the shadow of the eyepiece should fall on
Warning: it is not known for sure whether this instrument was actually used by the Vikings. Such an instrument would have been made of wood
Among the modern solar compasses used during the Second World War, it is undoubtedly the simplest and most effective model for this purpose. It is
Astronomical compasses were used by both sides during World War II, when other alternatives could not be used. For example, a magnetic compass can be