LEARNER

FORMATION OF CYCLONE Refers: It refers to any spinning storm that rotates around low air pressure called as Cyclone. Low Air Pressure: When the moist air move rise from water surface that particular area called as low air pressure. FORMATION OF CYCLONE: In order for a Cyclone to form it requires two ingredients: 1. Thunderstorm and 2. Ocean water must be above 26 degree centigrade. When the temperature of water above 26 degree centigrade, water evaporates, this moist air rises above the water surface to form clouds. That particular area becomes low air pressure, we know that higher air pressure always moves towards low air  pressure. Surrounding  to that area, higher air pressure moves towards low air pressure and this cool air become warm and evaporates, this system continuous. When the high pressure air moves along the earth axis, it makes clouds to rotate with high wind. These all combines to form cyclone.

INVENTION OF TOUCHPAD The introduction of laptop created a problem, how to use laptop cursor without a mouse? The solution created by American inventor Dr.George  Gerpheide.He invented touchpad in 1988, it detects fingers movement and transfer it to the on-screen cursor. Before to this invention click was the standard method of operating computer. Till 1994 it was silent that Apple Computers bought the first license to use his technology (Apple PowerBook 520). Construction and working: His touchpad works on employing several layers of material. At the top is a protective layer, about 3 inches (8cm) square, that the user touches. Underneath are several layers of electrodes arranged in horizontal and vertical rows, each separated by thin layer of insulation. These electrodes are connected to a circuit board that provides them a constant supply of alternating current. When finger touches the pad, it interrupts the current, this locality of current registered in circu

POLICE AND FIRE SERVICE PATHAKAMS Medals awarded by Central Govt. These Pathakams awarded on 15 th August and 26 th Jan. 1.       Presidents Police Medal for Distinguished Services. 2.       Presidents Police Medal for Gallantry. 3.       Indian Police Medal for Meritorious Services. 4.       Indian Police Medal for Gallantry. 5.       Prime Ministers Life Saving Medal. 6.       Jeevan Raksha Padak(for civilians) 7.       Parakram Padak(a.k.a wound medal) 8.       Antrik Suraksha Seva Padak. Medals awarded by State Govt. These Pathakams awarded on Ugadi and AP formation day and these medals are given to police department and fire services in the ratio of 9:1. 1.       A.P Mukyamanthri Shaurya Pathakam. 2.       A.P Police Mahonnatha Seva Pathakam. 3.       A.P Police Uttama Seva Pathakam. 4.       A.P Police Kathina Seva Pathakam(for police department) 5.       A.P Police Seva Pathakam.