Build A Floating Arm Trebuchet

cards the night of Le Havre and

You may ride in the car at night in the countryside, and you notice that the sky is not all-in-dark. In the distance, Le Havre or the industrial zone illuminates the sky. Observing maps of light pollution (sic), from the Astronomy of Vexin, I offer below, I realize that we must go to Saint-Jouin de Bruneval to find some dark sky. A little farther, the forest is an area where Brotonne it's still well ... night night. Rouen much light during nighttime hours while in the vicinity of Forges-les-Eaux is still dark. The area of Lisieux remains quite obscure. Very simply, the best way to have the night, when we look at the map, is to go to sea! I may come back in the future on the subject of lighting that remains relatively unknown. A decrease next Time sparkling Eiffel Tower symbol of Paris, the City of Light, which prompted me particularly interested in the question. This decision was made to save energy. What do you think?

On the first card, consult page two and you can zoom in to see details.
Map of Le Havre and Rouen
The general map