Established

After the pole shift it would be desirable to easily determine with common items your Latitude, predict average seasonal temperatures, and measure the cloud density-clearing rate. It may be that one has lost track of days and now wishes to know what the earth is telling us the seasons are. Assume for now there are no dip needles available and one does not know how to make one (a subject for another time). All of this can be determined by measuring the length of daylight for the longest and/or shortest day or any two days of the year. The longest days will occur when the earth is tilted such that you are closest to the equator and will tell you the fist day of summer 21 Jun. The shortest days occur when the earth is tilted away from the equator and give the first day of winter 21 Dec. The readings can be taken with a normal watch, or clock (described later) or can be taken semi-automatically by building a simple circuit. Once the readings are taken one need only use some simple graphs to calculate Latitude, predict seasonal temperatures, and if needed determine what season of the year one is currently at. I have been working this project for a number years and it will take seven separate posting to fully explain it. I have attempted to make it as simple to use as I can. Print it out and use it as an after pole shift reference document. You may want to build the circuit below before the pole shift and test it out.

The following future posts on Light Measurement (LM) will make up this subject:

LM-1: Introduction
LM-2: Photocell measurements
LM-3: Results of measurements part1
LM-4: Results of measurements part2 Graphs to use
LM-5: Results of measurements part3 Formula to use
LM-6: Light meter construction and use
LM-7: Temperature, precipitation versus latitude

Offered by Mike.