It may happen that death comes to your house itself. The feet of the postman who brought the parcel or even the letter. This is the so-called postal…
The use of candles, grease and kerosene lamps, radar reflectors, bottle mail as signaling equipment for distress signals.
Even an elementary candle can serve as a signaling means for giving distress signals. Although this may seem strange at first glance, the light of candles is best…