The hidden facts behind what we are seeing daily.We are seeing many things around us but we don't know the facts behind it.
1.the pigeons and other birds have 'magnetoreception' power with which they feel the nearness of ground at any distance. Because of this only earlier the pigeons were used for mailing letters.
2.the shark also has the magnetosphere in them with which they create small electric vibration through saltiness in the ocean . This electric power is useful to sharks to find their food.
3.the power of 'echolocation' possessed in bats helps them to know the direction,location of food, volume of food,forthcoming danger etc ,through the echo of sound raised by them
4.the numbers mentioned in the railway compartmetsdenotes the year of manufacturing and sequent number if that bogi. For example a number in the bogi as 775660 denotes that is 5660th bogi in the year 77 as the first two digit denotes the year of manufacturing and remaining is serial noor production.