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.
A solar eclipse always occurs two weeks after or two weeks before a total lunar eclipse. Lunar eclipses can last for a maximum of 3 hours and 40 minutes, with the period of totality lasting for as long as I hour and 40 minutes. Solar eclipses can last for a maximum of 7 minutes and 40 seconds if they are total (at the equator), 12 minutes and 24 seconds at most if they are annular. Lunar eclipses can never happen more than three times a year. Solar eclipses happen at least twice a year but never more than five times a year.