An acquaintance of mine, while being home alone, saw that the light bulb in the room which was hanging from the ceiling with wires having a pendulum motion which was more than noticeable. He says that that was a ghost but i know better than that.
I just can't find an explanation. Maybe you can help.
The light bulb was ON at the time. Some windows in the flat could have been open but the person said he was in the room at that time and there was no draft.