In modren days a lot of new fertiliser are used for the better growth of crop ee new type of cultivation system Vertical farming is the practice of producing food and medicine in vertically ... The modern ideas of vertical farming use indoor farming techniques and controlled-environment
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It may seem strange that the selected velocity does not depend on either the mass or the charge of the particle. (for example, would the velocity of a neutral particle be selected by passage through this device? ) the explanation of this is that the mass and the charge control the resolution of the device--particles with the wrong velocity will be accelerated away from the straight line and will not pass through the exit slit. if the acceleration depends strongly on the velocity, then particles with just slightly wrong velocities will feel a substantial transverse acceleration and will not exit the selector. because the acc