AN INEXPENSIVE ATWOOD MACHINE

An inexpensive automated vitrectomy machine

A low-cost automated vitrectomy machine was developed locally by the Department of Medical Physics and Engineering at Edinburgh University. The machine uses disposable handpieces, and has proved to be user-friendly, reliable, and efficient for anterior segment vitrectomy and, for selected patients, for posterior segment vitrectomy. The construction and mechanics of the machine are described. Si...

Chaos in the Swinging Atwood Machine (SAM)

A normal Atwood Machine is composed of two masses connected with a string, hanging from pulleys, (see figure 1). This system is often used to teach Newton’s laws of motion due to its simplicity. However, it is not very interesting to study beyond that. When the two masses are not equal, the heavier one will accelerate down and the other will accelerate up at the same rate. When the masses are e...

development and implementation of an optimized control strategy for induction machine in an electric vehicle

in the area of automotive engineering there is a tendency to more electrification of power train. in this work control of an induction machine for the application of electric vehicle is investigated. through the changing operating point of the machine, adapting the rotor magnetization current seems to be useful to increase the machines efficiency. in the literature there are many approaches wh...

An inexpensive blackbody model

A blackbody is a fundamental concept in thermography. A perfect model of blackbody is characterized by emissivity =1 which is difficult to be obtained. There are black body simulators which are being used for calibration of infrared devices. Commercial solutions of blackbody simulators are based on mathematical models of cavity or surface blackbodies and their emissivity is closer to unity e.g....

An inexpensive, accurate ''injection gun''.