Basically I have a shower with a big glass pane and I was in bed and heard a massive crash and went to look thinking someone might be breaking in but no the shower glass pane shattered itself and nothing can fall on it or anything. So I’m so confused. Any ideas?
And before anyone jumps to anything paranormal I’m sceptical of that type of stuff.
The spark plug example is popular because presumably you find both old sparkplugs and spare car windows at junk yards. What it really is that the ceramic that they’re made out of hard and sharp enough when broken to damage the surface of the glass which causes the chain reaction.