Negatively charged
Water veins
Shallow groundwater threads. Useful for a well, unwelcome under a bed.
Energy zones
Zones of radiation directed toward the surface. We draw their width and position so the house, the bed and the well are not placed at random.
Negatively charged
Shallow groundwater threads. Useful for a well, unwelcome under a bed.
Positively charged
Narrower bands, not related to fire as such. Chimneys were sometimes set on their crossings; beds were not.
Rock structure
Projections of tectonic breaks — strips where field parameters differ from the surroundings.
Circular zones
Vertical upflow near a vein centre, typically a circle tens of centimetres across. Check springs when you move a bed.