Saturday, 28 March 2020

Physics I



Definition of physics :

  • The interaction between science and energy in fields like mechanics and electromagnetism.

  • The study of natural and phenomena.

  • The study of matter , energy , space , time and relations between them .

  • The study of properties and interaction of matter , energy ,space and time .


The Department of Physics is one of the oldest academic disciplines in various universities, which belongs to the College of Science, where this specialization is concerned with the study of physics, which is one of the experimental scientific branches and aims to study and interpret natural phenomena and discover the basic laws that govern nature around us as it searches in physical phenomena and conducts experiments To know the composition of the properties of matter and its relationship to energy and a shortcut, we can define it as the science specialized in the study of matter and energy and how each of them affects the other and understand what the material is and the reasons for its behavior be seen.

Physics major:

The study of physics specialization ranges between three to four years according to the study plan of each university, where the first academic years are based on introductory courses on the foundations of physics ((your mechanics and optics) and an overview of concepts in modern physics and also in which other fields such as mathematics and computer are studied, the physics needs to know Great in mathematics, so mathematical topics such as calculus and algebra are learned.

And also the study of other applied sciences related to physics such as chemistry, biology, etc., where those sciences are studied in an applied and practical way through practical experiments and with advanced capabilities and devices.

After a good foundation in physics, the student will study advanced topics such as quantum mechanics and modern physics and also will learn research skills in physics, computational physics and electronics.


In addition to specialization within the departments of this branch, according to each university and its need, which includes many aspects, including:

1 - Theoretical and particle physics: in which topics such as atomic spectra, relative quantum physics, and particle physics are studied.

2- Nuclear Physics: The atomic structure and reactor physics are recognized.

3- Medical and Biological Physics: in which physics applications in life sciences and radiation physics are studied and their effect on the organism.

4- Laser physics: advanced photons and optics are taught in this specialty.

5- Solid State Physics: In which physics of solid state and solid state are studied and installed.

In addition to the practical study in the laboratories that are complementary to the theoretical section, although some universities rely on the theoretical department more than the practical, for those wishing to study theoretical physics.


Why study physics?

1- It gives the opportunity to gain an in-depth knowledge in physics and to develop the analytical and research skills that a student uses in his life, whether during the study period or after graduation.

2- Gain knowledge of research and prepared experiments in various physical fields.

3- The ability to conduct various physical experiments and research and delve deeper into finding an interpretation of the results of these experiments.

4- Mathematical representation of any problem with which a logical solution can be found.


Work fields after graduation:

There are many scientific and practical fields in which a graduate of physics can offer his expertise, whether in the public or private sector, including:

1- Teaching field: Physicist can work as a teacher for this subject for high school and middle school students.

2- Academic field: The physicist is able to work as a laboratory assistant or technician inside universities or as a research assistant at scientific and technical research and quality control centers.

3- The medical field: As dealing with various medical devices, magnetic resonance devices, and many of the tools and techniques in the field of radiology and analysis need a physicist.

4- The field of electronics: Major companies and factories need to develop electrical and electronic devices and computers through specialists in physics.

5- The field of meteorology: where the physicist can work within the meteorological centers and earthquake prediction centers.

6- The health field: A physics graduate can carry out environmental survey work and conduct medical examinations through his ability to use technical devices for examination.

7-Laser engineer : responsible of making the usage of laser as the organization needs.


Why we need to study physics in computer engineering ?

  • The amount of data that can be stored and retrieved from spinning disk drives are governed by the speed at which they spin.

  • The limit of that speed is obviously a material problem, but the physics of the spin, and the direct impact of that spin speed on data storage and latency is critical to modern computer science.

  • The amount of data that can be stored and retrieved from spinning disk drives are governed by the speed at which they spin.

  • Direct impact of that spin speed on data storage and latency is critical to modern computer science.

  • Calculations going on in a CPU or GPU, fractions of a microsecond matter. 

  • In telecommunications, the speed of light is directly relevant again.

  • Every single light pulse is a bit of data (a 1 or a 0). 

  • Rate of heat generation in  (CPU) and its effect on its conductivity.

  • Focusing on computer architecture and digital logic that are more or less supported by ideas and applications rooted in electronics.

  • knowing computer hardware and its architecture .

  • In Making system software like operating system , compilers that software is going to closely relate with hardware.

  • In Making small simple apps you don't need physics.


  • How a computer deals with electrical signals so that it can interpret them into One's and Zero's.



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