Quick Answer. A lightning arrester protects telecommunication and electrical power systems from damage during a lightning strike. It accomplishes this by redirecting the current in the lightning to the ground.
Bloating, burping and passing gas are natural and are usually caused by swallowed air or the breakdown of food through digestion.
One relatively common cause of burping and belching is lactose intolerance. Lactose is a type of sugar found in dairy products. Many people, particularly of African or Asian background, have low levels of lactase, an enzyme that digests lactose. As a result, not all of the lactose can be digested.