Candles are a leading cause of home fires and fatalities. Soot on the walls and furnishings is unsightly, and may also be a sign of serious problems. It may also be unhealthy, as inhalation of minute particles of soot has been documented to cause health problems.
It is a popular misconception that the phenomenon of a total eclipse of the sun is a rare occurrence. Quite the contrary. Approximately once every 18 months (on average) a total solar eclipse is visible from some place on the Earthâs surface. That's two totalities for every three years.
In the 100 years from 1901 to 2000, there were 228 solar eclipses and 229 lunar ones. So over a long period of time, that's an average of roughly 2.3 of each kind every yearâ¦. There are typically 2 or 3 of each kind every year. But some years have only one, and occasionally there can be a year with as many as five.