Sunshine Recorder - Langli, Denmark
Posted by: 
elrecke
N 55° 30.722 E 008° 18.980
32U E 456825 N 6151984
Special Type of a Sundial - A Sunshine Recorder. ATTENTION: The island Langli can only visited from July 16th until September 15th. You have to go over the mud flats which is risky and only possible at low tide. Inform yourself about the Risks.
Waymark Code: WM9PD9
Location: Denmark
Date Posted: 09/13/2010
Views: 22
Description
A sunshine recorder is a device that records the amount of sunshine at a given location. The results provide information about the weather and climate of a geographical area. This information is useful in meteorology, science, agriculture, tourism, and other fields.
It was invented by John Francis Campbell in 1853 and later modified in 1879 by Sir George Gabriel Stokes.
The unit is designed to record the hours of bright sunshine which will burn a hole through the card. However, at sunrise and sunset the sun is lower in the sky and will tend to leave a scorch mark on the card which may at the extreme end be difficult to see.
The glass sphere – typically 10 cm (4 inches) in diameter – is designed to focus the rays from the sun onto a card mounted at the back and is set on a stand. The card is held in place by grooves of which there are three overlapping sets, to allow for the height of the sun during different seasons of the year.
Source: Wikipedia
Attention
Important - when you go on the mud flats
- 1:30h before and 1:30h after the lowest tide it is safe to enter the mud flats The local tide-times you find out:
Esbjerg Local Tide (or in the local tourist information guide)
- Watch out the weather forecasts, fog and thunder storms can be very dangerous.
- Wear sandals or wellingtons to protect your feet against sharp shells
- If you want to walk to Langli (only from 16.07-15.09.) you should have water, food, additional batteries for you GPS and perhaps a adequate apparel, flashlight, compass and a map with you.
Geocaches nearby
More details and waypoints in these geocaches:
Earthcache Vadehavet
Langli