How far away can you see a candle in the dark?

How far away can you see a candle in the dark?

Considering the absolute threshold, the brightness of a candle flame, and the way a glowing object dims according to the square of the distance away from it, vision scientists conclude that one could make out the faint glimmer of a candle flame up to 30 miles away.

How many days out of the year does it rain in Seattle?

As for the rest of Seattle’s days, we average 226 cloudy days (4th most in the U.S.) and 81 partly cloudy days. Of all those days, we get 155 days of rain a year.

Why are objects in the mirror closer?

Here’s a case for saying that objects in the mirror are closer than they appear: The mirror is slightly convex so as to give the driver a wider field of view. As a result, the expanse of mirror reflecting light from the object into my eye is smaller than the expanse would be if the mirror were flat.

Where did Lego get its name?

The Lego Group began in the workshop of Ole Kirk Christiansen (born 7 April 1891), a carpenter from Billund, Denmark, who began making wooden toys in 1932. In 1934, his company came to be called “Lego”, from the Danish phrase leg godt, which means “play well”.

Which continent is the second largest land mass?

A continent is one of Earth’s seven main divisions of land. The continents are, from largest to smallest: Asia, Africa, North America, South America, Antarctica, Europe, and Australia. When geographers identify a continent, they usually include all the islands associated with it.

Who invented the seat belt?

Volvo built their reputation on selling safer cars, but they gave away the most important safety device ever invented: the three-point seat belt. UK autos website Arnold Clark took a look back at what is now the universal modern seat belt, created by Volvo engineer Nils Bohlin in 1959.

How long does it take for a robin’s egg to hatch?

Mother robins may start incubating their eggs during the evening after the second egg is laid, or after all the eggs are laid. They sit on the eggs for 12 to 14 days. The female usually does all the incubating. Even in good weather, she rarely leaves her eggs for more than 5 to 10 minutes at a time.

How long is an NFL football season?

The National Football League regular season begins the weekend after Labor Day and ends in December or early January. It consists of 256 games, where each team plays 16 games during a 17-week period.