On most airlines, if you live in the city from which the flight is departing, you will not be eligible for compensation. To avoid the hassle of dealing with a flight cancellation (or delay), try booking flights that depart early in the day. That way, if your flight is cancelled, you will have more options for being rebooked on a later flight.
How Passive Radiators Work. A passive radiator speaker is a simple device that increases the low frequency response (Bass) of a speaker system*. When used properly, a passive radiator can give a speaker system the comparable performance characteristics of a much larger system; that's the point, in a nutshell.
passive is the reverse of active.it means it needs help from others and does not do things by its own,it may also need generators. passive transport is the passage of ions against the concentration gradient (low solute concentration to high solute concentration) trough a semi permeable membrane by the need of energy.