The size of ball lightening: ball lightening has various diameters, mostly ranging from 15-30cm. While someone has seen ball lightening with diameters from 1-2cm or 5-10m. Ball lightening can change its diameter in a fixed frequency, it can become smaller when waning. Explosion can enlarge ball lightening in bulk and end it, while it can also change its size by resolution or recombination.
The Shape of Ball Lightening: According to most reports, ball lightening can be in a ball shape or an egg shape. It can also be oblong, cubic, circled, dumbbell-shaped, cloud-shaped, columnar, bullet-shaped, cigar-shaped, tapered, shield-shaped, spiral and so on.
The Color of Ball Lightening: Orange and white are the most common colors of ball lightening. Other quite usual colors are red, blue, yellow and green. Silvery or black ball lightening can be rarely seen. However, some ball lightening can change its color.
The Structure of Ball Lightening: Ball lightening seems to be a certain kind of plasma or nebulous substance. Some of it has a transparent center, while some is hollow on the inside or doesn’t even have a obvious fixed structure. Some ball lightening seems to be in a dynamic state.
The Motility of Ball Lightening: Sometimes ball lightening is motionless, whereas most moves along a straight line. Some ball lightening spins at a resting position, while some spins restlessly. Also there is ball lightening that follows a obvious complicated route.
The Life Span of Ball Lightening: Ball lightening usually lasts for a few seconds, maybe 7-8s. Nevertheless some can last for up to one minute or even more that.
The Behavior of Ball Lightning: Some ball lightning follows the objects around it, while some dashes directly toward the ground. Some seemingly tends to 'investigate' other objects. Guided to metallic or magnetic objects, most ball lightening comes up with a strong crash, which can result in huge damage. Ball lightening can jump, can be decomposed, recombined, weakened and exploded and these changes can been seen simultaneously.
The Sound of Ball Lightning: Hisses or cracking sounds are rarely what ball lightening sounds like.
The Smell of Ball Lightning: Witnesses said there was a smell of sulphur or burning something. The smell of burning tar, ammonia water or ozone is also said to be with ball lightning.
The Temperature of Ball Lightning: Ball lightening is rather cold, which means no heat can be felt from it, according to people who once have touched it. Whereas it can boil the water, melt the electric wires and heat metals.
The Brightness of Ball Lightning: As bright as a street lamp, ball lightning can be seen during daytime. But people often see the ground being lighted up by it at night.
The Occurrence of Ball Lightening: Thunder storm is the most common time for ball lightening, while rarely it can also take place before or after a thunderstorm. Hovering standby, most ball lightening are accompanied by normal lightening. However, it directly hits the ground from the clouds time to time.
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