Pick up the running end of the rope (the end that will be loose after you tie the knot). Wrap it halfway around the pole or timber. http://pad1.whstatic.com/images/thumb/d/dd/Tie-a-Clove-Hitch-Knot-Step-1-preview-Version-2.jpg/550px-Tie-a-Clove-Hitch-Knot-Step-1-preview-Version-2.jpg. clove hitch may be tied by forming two loops and putting a pole through those two loops. This alternative technique has the limitation of having to be tied at the end of a pole. However, it is quicker to tie than the above method.
A nozzle is a device designed to control the direction or characteristics of a fluid flow (especially to increase velocity) as it exits (or enters) an enclosed chamber or pipe. A nozzle is often a pipe or tube of varying cross sectional area, and it can be used to direct or modify the flow of a fluid (liquid or gas). Nozzles are frequently used to control the rate of flow, speed, direction, mass, shape, and/or the pressure of the stream that emerges from them.
In a convergent nozzle, there is an increase in velocity and a decrease in pressure, but we know that pressure is inversely proportional to area. Then why is this pressure decreased in convergent nozzle, although there is a decrease in area? The pressure drops in a convergent nozzle because of the Bernoulli Principle. A nozzle is a spout on the end of a hose or pipe used to control the movement of a fluid like water or air. A convergent nozzle is a nozzle that starts big and gets smaller-a decrease in cross-sectional area. As a fluid enters the smaller cross-section, it has to speed up due to the conservation of mass.