The structure of the thermals
From my diploma thesis (1996)
In my diploma thesis I examined the logger data of the German Championship in Lüsse. At that time, loggers were still brand new and had just supplanted the barograph and the camera.
In this contest old formal school of optical turning was in contrast to the new data driven turning with loggers. Being cautios the contest organizers ment to “quasi optical turn” with the new loggers. This was a reason of never ending discussions, as on one day in standard class the turn-point-coordinates laid 4 km away from the (former optical) turning point.