how far can a match flame be seen at night
They are everywhere and as a result; we fail to fully understand the question, how far away can you see a candle at night. Because the earth is round, its surface curves out of sight at a distance of 3.1 miles, or 5 kilometers. Now with normal eyesight our visual acuity extends far beyond the horizon. If the Earth was flat, or if you were standing high on a mountain, you could see bright lights hundreds of miles in the distance. On a dark night, you could even see a candle flame flickering up to 30 mi. (48 km) away. Because most of us live in areas where we are used to seeing lights all the time, we fail to realize how far away they can be seen.