Department of Physics Activities 2018-19

     GUEST LECTURES

1. Sri. M. Srnivacharyulu, ISCAN, Guntur visited our College on 07 Aug 2018 and gave the guest lecture on “Devotional Physics”

 Sri Srnivasacharyulu explained the basic principles of physics in view of devotion and how they are related to the devotion. He explained the scientific approach of the devotional events and activities how they can useful to the society and nation especially for the development of the younger generation with good attitude and discipline. Good qualities of a person. It is most useful to the present generation to turn in a right way.

2. Dr. Sk. Mahmuda, Asst. Professor in Physics, KL University, Vaddeswaram, Guntur Dt visited our College on 10 Dec 2018 and gave the guest lecture on “Optical Properties of Materials for device Applications”

 Dr. Sk. Mahmuda explained about the optical properties of materials and their applications .Knowledge of the optical properties is crucial in many industrial and scientific applications such as contactless temperature measurement, modeling, heat transfer, laser technology, optics (mirrors, lenses and optical windows), energy, construction, photovoltaic industry, the aerospace industry and many others. Analysis of the optical properties is carried out both for external bodies and internal use in the development of laser materials processing technologies and development of infrared thermography methods. Optical properties characterize the response of materials to incident electromagnetic radiation. For each material, the incident radiation is partially transmitted, partially reflected and partially absorbed. Optical properties that define the material response to the incident radiation can be described as transmissivity, reflectivity and absorptivity. Every solid material emits a thermal (infrared) radiation. The relative ability of the material to emit radiation is known as emissivity (emittance).

3. Dr. Ravi Sankar Babu, Professor in Physics, Calicut University, Calicut, Kerala visited our
    College on 21 Jan 2019 and gave the guest lecture on “Nuclear Physics”

 Prof. Ravi Sankara Babu explained about a heavy nucleus can contain   hundreds of nucleons. This means that with some approximation it can   be treated as a classical system, rather than a quantum-mechanical one.   In the resulting liquid-drop model, the nucleus has an energy which   arises partly from surface tension and partly from electrical repulsion of   the protons. The liquid-drop model is able to reproduce many features of   nuclei, including the general trend of binding energy with respect to   mass number, as well as the phenomenon of nuclear   fission.Superimposed on this classical picture, however, are quantum-   mechanical effects, which can be described using the nuclear shell model, developed in large part by Maria Goeppert Mayer and J. Hans D. Jensen. Nuclei with certain numbers of neutrons and protons (the magic numbers 2, 8, 20, 28, 50, 82, 126, ...) are particularly stable, because their shells are filled.Other more complicated models for the nucleus have also been proposed, such as the interacting boson model, in which pairs of neutrons and protons interact as bosons, analogously to Cooper pairs of electrons.Nuclei may also have extreme shapes (similar to that of Rugby balls or even pears) or extreme neutron-to-proton ratios. Experimenters can create such nuclei using artificially induced fusion or nucleon transfer reactions, employing ion beams from an accelerator. Beams with even higher energies can be used to create nuclei at very high temperatures, and there are signs that these experiments have produced a phase transition from normal nuclear matter to a new state, the quark–gluon plasma, in which the quarks mingle with one another, rather than being segregated in triplets as they are in neutrons and protons.

IMPORTANT DAYS

Smt.T. Sai Naga Lakshmi, Lecturer in Physics, Maris Stella College, Vijayawada visited our College on "National Science Day" 28th February 2019  

Department of Physics has Celebrated “National Science day” on 28^th February 2019 in the department of physics. Smt T. Sai Naga Lakshmi, Lecturer in Physics, Maris Stella College, Vijayawada has explained about National Science day. In 1986, the National Council for Science and Technology Communication (NCSTC) asked the Government of India to pronounce February 28 as National Science Day, for which the then Government accepted and declared the day as National Science Day. National Science Day is celebrated to commemorate discovery of the 'Raman Effect', which led to Indian scientist Sir Chandrasekhara Venkata Raman or CV Raman Sir Chandrasekhara Venkata Raman or CV Raman winning the Noble Prize in Physics in 1930. Raman Effect is a phenomenon in spectroscopy discovered by the eminent physicist while working in the laboratory of the Indian Association for the Cultivation of Science, Kolkata. The basic objective of celebration of National Science Day is to propagate the message of importance of science and its application among the people. The first National Science Day was celebrated on February 28, 1987. The theme of National Science Day 2019 is "Science and Technology for a Sustainable Future", which has been chosen for the purpose of raising public appreciation of the scientific issues involved.

WORKSHOP

Dr. M, Venkateswarlu, Associate professor in physics, KL University, Vaddeswaram  visited our College on 08 Feb 2019 and gave Key note Address on the occasion of  Wokshop on “Physics of Materials” conducted by the Department “Physics of Materials”

Dr. Venkateswarlu explained about Physics of materials. A material is defined as a substance (most often a solid, but other condensed phases can be included) that is intended to be used for certain applications. 

There are a myriad of materials around us—they can be found in anything from buildings to spacecraft. 

Materials can generally be further divided into two classes: crystalline and non-crystalline. The traditional examples of materials.