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An International Peer Reviewed Research Journal
AJP
SSN : 0971 - 3093
Vol 24, No. 1, January, 2015
Editorial
The year 2014 has ended and the dawn of 2015 has given knock
at all doors. I take this opportunity to send you and your family
members my best wishes for happiness, pleasure, peace, joys and
success for your works in the new year.
It is a matter of great pleasure that the year 2015 has been
declared as The International year of Light. In this regard it is
apt to quote Dr. Ahmed Zewail, Linus Pauling Chair, Professor of
Chemistry and Professor of Physics; Director, Physical Biology
Center for Ultrafast Science & Technology, California Institute
of Technology, USA
“Civilization would not exist without light—light from our sun and
light from the focused and coherent lasers that have now become an
important part of our daily lives; from scanning packages at
supermarkets, to eye surgery, and to IT communications across
oceans. The International Year of Light will surely raise awareness
of these powerful discoveries and their present wide-ranging,
light-based technologies, which are significant contributors to the
world market. As importantly, the International Year of Light will
inspire future discoveries and applications for one of the most
important elements of our existence: light.”
Asian Journal of Physics (AJP) has completed 23 volumes of its
existence from the time since the first issue was launched with the
opening paper by famous Raman Spectroscopist Prof Wolfgang Kiefer,
University of Wurzburg, Germany. It has been possible because of
enthusiastic response from the scientists of different parts of the
globe. AJP is serving with its humble efforts along with its
purpose of publishing and spreading new results of physics and
applied topics. A very large number of reputed workers of
international fame have supported this journal of scientific
research by their regular contributions. This is apparent from many
special issues on specific topics being published from time to
time.
We began with publishing four issues per volume in 1992, however,
since Vol 23 (2014) we have been publishing 6
issues per volume. Vol 23, Nos 1 & 2 was guest
edited by Prof Virginia Trimble (USA) on History of Physics &
Astronomy. The third issue edited jointly by Prof Joseph
Shamir (Israel) and Prof V K Rastogi (India) was
dedicated to Prof Kehar Singh, one of the founding
members of Editorial board and a regular contributor of AJP. The
fourth issue of the year 2014 was released in honour and
recognition of a distinguished scientist Dr A. K.
Gupta, IRDE Dehradun. India. The fifth issue of this volume was
edited by Prof Ekaterina Michonova-Alexova on New Horizons for
Physics: Bridging the Gap between Physics and Biomedical Sciences.
The last issue of this volume was in honour
and recognition of a very old friend of mine Prof
S Mohan and guest edited by his student Arjunan.
In order to expedite the publications and to extend coverage of
several important areas, we have included a few more names in the
editorial board of AJP. On behalf of the Editorial Board, I wish
them all a warm welcome.
V K
Rastogi
Editor
March 3,
2015, Wednesday
A Letter written by Sir C V Raman to G D Baruah
Few words about G D Baruah
It gives me great
pleasure in writing few words in honour of my great friend
Professor Dr.
Gaurangadhar Baruah. Dr. Baruah was born on 1st
March 1942, obtained B.Sc. degree from Cotton College in
1962, M.Sc. degree from Guwahati University in 1964, and
Ph.D. from Banaras Hindu University in 1969. After his Ph.D. he was
devoted his life for the advancement of science especially in the
north eastern region of India. He served as Professor and Head of
the Department of Physics of the Dibrugarh University. He has more
than 35 years of teaching and research experience and has more than
300 research publications in the field of molecular Spectroscopy,
Semi-classical and Quantum Theory of Lasers, X-ray laser and
Quantum Optics. Under his expert and able guidance thirty students
obtained Ph.D. degree and twenty seven students obtained M.Phil.
Degree. He was the sectional President of physics at the 85th
sessions of Indian Science Congress at Hyderabad and recorder of
physics section of Indian Science Congress Association during
95-96.
He has delivered many invited talks in National and International conferences and he is a vibrant orator when the subject of optics and spectroscopy arises. He is a life member of Indian Science Congress Association, Indian Laser Association, Indian Bio Physical Society, Laser and Spectroscopy Society of India. He is an elected fellow of Laser and Spectroscopic Society of India and consulting editor of American Biographical Society. He received INCONS award in 2005. He has written many books: Essentials of Laser and Non Linear Optics ( Third Edition,2009, Pragati Prakashan), Advanched Laser and Non Linear Optics PH-602 (For University Center for Distance Learning Department of Computer Science and Learning, Chaudhory Devi Lal University, Sirsa, Haryana. 2007) and Essentials of Quantum Optics (in press). His book Lasers and Nonlinear Optics published by Pragati Prakshan is a widely read book by students of lasers.
The International year of Light
____________________________________________________________________________________________________________________________________
Asian Journal of Physics Vol. 24, No 1 (2015) 01-16
Double phase-image encryption using gyrator-, and fractional Fourier transforms withstructured phase mask in the frequency plane followed by a gyrator transform
Hukum Singh*, A K Yadav, SunandaVashisth and Kehar Singh
Department of Applied Science, ITM University, Sector 23-A, Gurgaon-122 017, (Haryana) INDIA
Dedicated
to Prof G D Baruah
___________________________________________________________________________________________________________________________________
Asian
Journal of
Physics
Vol. 24, No 1 (2015) 17-32
On the methods of measurement of radius of curvature and focal length
Rajpal S
Sirohi
Department
of Physics,Tezpur University, Napaam.
Tezpur-784 028, India
Dedicated to Prof G D Baruah
___________________________________________________________________________________________________________________
Asian Journal of Physics Vol. 24, No 1(2015) 61-70
Time-resolved fluorescence measurements of seeds of the bitter gourd (Momordica charantia L.)
Priyangshu Rana Borthakur1 and Anurup Gohain Barua2
1Faculty of Science & Technology, The ICFAI University, Tripura-799 210, India
2Department of Physics, Gauhati University, Guwahati-781 014, India
Dedicated to Prof G D Baruah
___________________________________________________________________________________________________________________________________
Asian Journal of Physics Vol. 24, No 1 (2015) 77-83
Dielectric relaxation study of o-chlorotoluene and
p-chlorotoluene in benzene mixtures
using time domain reflectometry technique
K P Rajappan Nair1, A C Kumbharkhane2, Pravin G Hudge2 and S C Mehrotra3
2School of Physical Sciences, S R T M University, Nanded-431 606, MS, India
3Department of Computer Science, Dr B A M. University, Aurangabad, Maharashtra, India
Dedicated to Prof G D Baruah
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