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| Gear |
| 07.21.08 (6:02 am) [edit] |
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A gear is a wheel with teeth around its circumference, the purpose of the teeth being to mesh with similar teeth on another mechanical device possibly another gear wheel so that force can be transmitted between the two strategies in a direction tangential to their surfaces. A non-toothed wheel can transmit some tangential force but will slip if the force is large; teeth put off slippage and permit the transmission of large forces.
A gear can mesh with any device having teeth friendly with the gear's teeth. Such devices include racks and other non-rotating policy; however, the most common condition is for a gear to be in mesh with another gear. In this case revolution of one of the gears necessarily causes the other gear to rotate. In this way, rotational motion can be transferred from one position to another. While gears are sometimes used simply for this reason to transmit rotation to another shaft perhaps their most significant feature is that, if the gears are of asymmetrical sizes, a mechanical advantage is also achieved, so that the rotational speed, and torque, of the second gear are dissimilar from that of the first. In this way, gears provide a means of increasing or decreasing a turning speed, or a torque.
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| University |
| 07.09.08 (10:47 am) [edit] |
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A university is an institution of higher education and research, which grants intellectual degrees at all, levels in a selection of subjects. A university provides together tertiary and quaternary education. The word university is resultant from the Latin universities magistrorum ET scholarium, roughly importance community of teachers and scholars. The funding and organization of universities is very different in different countries around the world. In some countries universities are primarily funded by the state, while in others funding may come from donors or from fees which students’ presence the university must pay. In some countries the vast majority of students attends university in their local town, while in other countries universities attract students from all over the world, and may provide university space for their students.
The Carnegie Basic Classification system distinguishes between institutions on the basis of the prevalence of degrees they grant. As the names of their categories designate names indicate, the Carnegie Foundation considers the granting of master's degrees necessary, though not sufficient, for an institution to be classified as a university.
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