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Article published in Engineering Cap magazine, April, 2019 Issue.

Role of Physics in Engineering

By Madiha Mehboob

Physics from ancient Greek knowledge of nature is the natural science that involves the study of matter and its motion through space and time, along with related concepts such as energy and force. More broadly, it is the general analysis of nature conducted in order to understand how the universe behaves.

There are many structures of physics as mechanics, thermodynamics, electromagnetism, photonics, relativity, atomic and nuclear physics. Physics is very important in the field of engineering. There is no getting away from it. There is no branch in engineering completely without physics if there is a branch without physics then, it’s not engineering. In this regard some physicist beautifully described the importance of physics

“I was going to engineering school but I fell in love with physics” Leonard Susskind

Another physicist describes a relationship between physics and engineering as “Engineering is merely a slow younger brother of physics” in my views it is rightly said, according to it physics plays the role of elder brother for engineering.

Engineering and technical applications of physics are numerous. Every branch of physics has an important role in engineering. But here is a branch of physics that played a vital role in the field of engineering “thermodynamics”.

Thermodynamics is the branch that deals with the relations between heat and other forms of energy in the modern and advanced world, one of the largest concerns is the ever depleting supply of oil. The automotive industry is especially impacted. In recent years the price of crude oil has reached record highs. And the price of gasoline has fluctuated substantially.

The high of gasoline coupled with the uncertainty of its availability and future price have put a high priority on fuel economy of an engine. In addition to this it is also polluting our atmosphere. These major issues are putting pressure on automakers to develop new technologies to increase the fuel economy and decrease the emissions while maintaining or improving the engine’s performance. Several new technologies have resulted.

All of these technologies accomplish these goals by increasing the efficiency of an engine. As a whole these technologies are called variable valve actuation. These technologies achieve a higher efficiency by reducing the constant of the engine. However, the added variability increases the time to calibrate an engine. To address this, more testing is being performed using engine stimulations instead of physical testing. This thesis focuses on how to create an engine model and how engine stimulation can be used to optimize such an engine.

In addition the benefits of a particular variable valve actuation technology, can phasing, will be explored. In Malaysia mathematical models for these processes are developed and solutions for selected feed forward and feedback control problems are presented. Like thermodynamics all branches of physics have roles in engineering.

Future of BS Physics in Pakistan

Firstly, you should apply for an MS as well, because of the insufficiency of jobs in our country. Meanwhile, you can also find job related to your field as accelerator operator, application engineer, data analyst, design engineer, high school physics teacher, it consultant, lab technician, laser engineer, optical engineer, research associate, software developer, system analyst, technical specialist, web developer etc.

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