The Airborne Collision Avoidance System II (ACAS II) was introduced in order to reduce the risk of mid-air collisions or near mid-air collisions between aircraft.It serves as a last-resort safety net irrespective of any separation standards.he safety benefits delivered by ACAS are usually expressed in terms of the risk ratio (does ACAS make safety better or worse?). For Europe, ACAS is estimated to reduce the risk of mid-air collision by a factor of about 5 (i.e. a risk ratio of 22%).
Quick Answer. Tungsten is the element used in incandescent light bulb filaments, because it has a very high melting point. Tungsten is a metal with an atomic number of 74, and its atomic weight is 183.84 grams per mole. This metal has a melting point of 6192 degrees Fahrenheit.
A bulb is generally a filament based device which gives light on heating of particular filament. Whereas a lamp itself consist of a light giving element and its shade and some mechanism mechanical or optical to direct light. A lamp maybe a light bulb based, CFL based, even kerosene based. Views Â· View Upvotes.