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Untitled Document
Academic Staff member

Mr. E. M. Ranatunga

Senior Lecturer(Grade I)

B.Sc. (Special in Physics), 2000.
University of Ruhuna, Matara, Sri Lanka.

M.Phli., 2010.
University of Ruhuna, Matara, Sri Lanka.

Reading for a PhD Degree started in 2017, University of Ruhuna, Matara, Sri Lanka.

Email - ranatung@phy.ruh.ac.lk
Office - +944122226812/4306


  • Currently Teaching Courses
  • Level I: Electricity and Magnetism I (PHY 1214)
  • Level I: Senior Lecturer In-charge of Level Practical Classes (PHY1b22)
  • Level II: General Physics III (PHY 2114)
  • Level II: General Physics IV (PHY 2214)
  • Previously Taught Courses
  • Level I: Classical Mechanics
  • Level II: Thermodynamics
  • Level II: Electricity and Magnetism
  • Level II: Special Theory of Relativity
  • Level III: Statistical Mechanics
  • Instrumental Physics
  • Concentrated Solar Power
  • Published in Abstract Form
  • International
  • 1. Wickramasinghe, T P, Ranatunga, E M & Abeywicrama S S, 2014, “A low cost automated device for releasing certain mass of small seeds or powder materials” RISTCON 2014, University of Ruhuna, Sri Lanka, January 2014.
  • 2. Samanthi, H S, Ranatunga, E M & Abeywicrama S S, 2014, “A low cost Electronicall controlled multi functioned drier” RISTCON 2014, University of Ruhuna, Sri Lanka, January 2014.
  • 3. Hansani, D L W & Ranatunga, E M, 2115, “Investigation of the efficiency of Ram pumps with the volume of the pressure chamber”, RISTCON 2014, University of Ruhuna, Sri Lanka, January 2015.
  • 4. Amaradasa H S D, Abeywickrama S S, Ranatunga E M & Mahanama G D K, “Preliminary results on the parabolic primary mirror making study for the application in Newtonian reflecting telescope”, Astrobiology Research Conference 2015, University of Peradeniya, Sri Lanka.
  • 5. Amaradasa H S D, Abeywickrama S S, Ranatunga E M & Mahanama G D K, “Testing astronomical optical standards of locally made parabolic mirrors for Newtonian Reflecting Telescopes”, RISTCON 2016, University of Ruhuna, Sri Lanka.
  • 6. H.D.S. Amaradasa, S.S. Abeywickrama, E.M. Ranatunga & G.D.K. Mahanama, “Testing results on the parabolic mirror grinding study for the application in Newtonian Telescope”, RISTCON 2016, University of Ruhuna, Sri Lanka, January 2016.
  • 7. Amaradasa H S D, Mahanama G D K*, Abeywickrama S S & Ranatunga E M, “Fabrication of a 6" F/9 Research grade astronomical telescope utilizing local resources”, PGIS Research Congress 2016, Post Graduate Institute of Science, University of Peradeniya, Sri Lanka.
  • 8.H.D.S. Amaradasa, S.S. Abeywickrama, E.M. Ranatunga, G.D.K. Mahanama, “Study of thin telescopic mirror fabrication and mirror cell optimization” iCMA Proceedings 2016.
  • 9. Amaradasa H. S. D.1, Abeywickrama S. S.1, Ranatunga E. M.1, Mahanama G. D. K.1*, Baduge S.2, Priyankara J. G. V.2 & Gunawardhana S. D.2, “Design and Implimentation of an altazimuth mount drive for a Newtonian Telescope coupled to a DSLR camera”, RISTCON 2017 (University of Ruhuna, Sri Lanka) p. 46.
  • 10. H.D.S. Amaradasa, S.S. Abeywickrama, E.M. Ranatunga, G.D.K. Mahanama, “Analyses of an altazimuth mount drive design for a set of 0.25 m F/10 Newtonian telescope and camera”, RISTCON 2017, University of Ruhuna, 22nd January 2017.
  • 11. Maduranga U. D. G., Abeywicrama S. S., Dharmarathna W. G. D. & Ranatunga, E M*, “An automated device to measure a fixed volume of a liquid”, RISTCON 2017, University of Ruhuna, Sri Lanka.
  • 12. Sanjaya N. A. A. K., Dharmarathna W. G. D., Abeywicrama S. S. & Ranatunga, E M*, “A novel Device for bending PVC pipes for plumbing purposes”, RISTCON 2017, University of Ruhuna, Sri Lanka.
  • 13. Hasanga A. H. H., Dharmarathna W. G. D., Abewicrama S.S. and Ranatunga E. M.*, “An automated device to release a desired volume of a liquid from a container”, RISTCON 2018, University of Ruhuna, Sri Lanka.
  • Published in Abstract Form
  • National
  • 1. Dharmarathna, W G D & Ranatunga, E M, 2003, “A possibility of saving energy in cooking rice”, Sri Lanka Association for the advancement of Science (SLAAS), Part I.
  • 2. Ranatunga, E M & Dharmarathna, W G D, 2006, “A simple device to reduce the wastage of cooking gas”, Fourth Science Symposium, University of Ruhuna, Sri Lanka.
  • 3. Ranatunga, E M & Dharmarathna, W G D, 2009, “A low cost automated device to release a certain volume of liquid”, Ruhuna Journal of Science, University of Ruhuna, Sri Lanka.
  • 4. M.K.S.Udayani, E.M.Ranatunga, G.D.K.Mahanama, ”Design and construction of Anemometer with a Wind Vane”, 9th Science Symposium, Faculty of Science, University of Ruhuna, Matara, Sri Lanka, February 2013.
  • 5. Senani, H W L, Ranatunga, E M, Yapa, K K A S & Bogahawaththa, U K L, 2013, “An automated device for feeding grains into a grinding mill”, Ninth Science Symposium, University of Ruhuna, Sri Lanka.
  • 6. H.D.S.Amaradasa, S.S.Abeywickrama, E.M.Ranatunga, G.D.K. Mahanama, “Preliminary results on the parabolic primary mirror making study for the application in Newtonian Reflecting Telescope”, Astrobiology Research Conference, 22-23 August 2015, University of Peradeniya.
  • 7. H.D.S.Amaradasa, S.S.Abeywickrama, E.M.Ranatunga, G.D.K. Mahanama, “Fabrication of a 10" F/9 research grade astronomical telescope utilizing local resources” PGIS Research Congress, 7-8 October 2016.
  • 8. K.G.Samararathna, H.D.S.Amaradasa, S.S.Abeywickrama, E.M.Ranatunga, G.D.K.Mahanama “Development of a prototype computerized driving system for the locally made Newtonian telescope”, RESCON 2018, Nov 9-10, 2018, University of Peradeniaya.
  • 9. Ranatunga E M*, Hettiarachchi N K, Aberathne M K, “Thermal Efficiency of Evacuated Tube Receivers in Steam Generation under Concentrated Solar Power”, 16th Academic Sessions, University of Ruhuna, Sri Lanka, 2019.
  • 10. Ranatunga E M*, Hettiarachchi N K, Aberathne M K, “An Analysis of Temperature Distribution along the Receiver Tube of a Parabolic Trough Reflector and Non-concentrated Solar Radiation ”, 17th Academic Sessions, University of Ruhuna, Sri Lanka, 2020.
  • 1. Won the Wasantha Mohotti Memorial Gold Medal – 2000 for the graduate who obtained a First Class Honours at the Special Degree of Bachelor of Science Examination in Physics held in the year 2000, University of Ruhuna, Matara, Sri Lanka.
  • 2. Awarded the Sri Lankan patent (Patent Number-13887) for the Automated Hopper Making Machine in 2006.
  • 3. Awadred the Vice Chancellor’s award for the Most Outstanding Staff Inventor in 2006.
  • 4. Awarded the First Place of the presidential awards for patented inventions in 2006.
  • 5. Awarded a research grant for 2006/2007, offered by Faculty of Science, University of Ruhuna.
  • 6. Awarded the third place in the 37th International exhibition held in Geneva in 2009 for the semi-automated hopper making machine.
  • 7. Awarded a research grant for 2014/2015, offered by Faculty of Science, University of Ruhuna.
  • 8. Awarded a full time research scholarship (PG2017(I)/RUH/02) by University Grant Commission for PhD degree from University of Ruhuna, Sri Lanka in 2017.
  • 9. Awarded the 2nd Place under the open category of the Ruhuna Invention and innovation exhibition (Southern Province Competition) for the Automated hopper making machine in 2017.
  • 10. Awarded the 1st Place under the University and Tertiary Education Institutes category of the Ruhuna Invention and innovation exhibition (Southern Province Competition) for a novel device for bending PVC pipe for plumbing purpose in 2017.
  • 11. Awarded the 1st Place under the open category of the Ruhuna Invention and innovation exhibition (Southern Province Competition) for the Semi-automated hopper making machine in 2017.
  • 12. Awarded the 2nd Place in the category of University and Tertiary Education Institutes, under the technical field of Engineering of Sahasak Nimavum 2017 for a novel device for bending PVC pipe for plumbing purpose in 2017.
  • Contribution to University Development
  • 1. Chairman: Ruhuna Invention & Innovation Competition, University of Ruhuna in 2015.
  • 2. Served as the Chairman of the Technical Evaluation Committee to handle the procurements under QIG W2 grant for year 03 (2014/2015).
  • 3. Served as the Chairman of the Technical Evaluation Committee to handle the procurements under QIG W4 grant for year 03 (2014/2015).
  • 4. Activity coordinator HETC/QIG-W2/RUH/OTS-04 project 2015.
  • Contribution to Faculty Development
  • 1. Served as a student counselor and a mentor in the faculty of science, University of Ruhuna from 2010 to 2016.
  • 2. Served as a member of the Organizing Committee of the Faculty day, Faculty of Science in 2012.
  • 3. Served as a member of the Publication Committee-Faculty of Science in 2012.
  • 4. Served as a member of the Exhibition Committee-Faculty of Science in 2014.
  • 5. Served as the Patron-Nature Explorer’s Society, Faculty of Science, University of Ruhuna in 2015.
  • 6. Served as a member of the Organizing Committee of the Faculty day, Faculty of Science in 2011.
  • Contribution to National Development
  • 1. Visiting Lecturer: Open University of Sri Lanka in 2013.
  • 2. An agreement made with Industrial Board of Ceylon (IDB) to commercialize the Automated Hopper Making Machine.
  • 3. University coordinator of Opportunities 2013 Exhibition held in MR/Rohana vidyalaya, 2013.
  • 4. Exclusive Resource Person for G.C.E. (A/L) Physics Practical Training for Teachers-Southeren province, MR/Rahula College 2013.
  • 5. Keynote speaker of Science Day (Vidabisheka-2012) of MR/Mary’s Convent, 2012.
  • 6. Exclusive Resource Person for the workshop for the provincial level new inventors 2013.
  • 7. Exclusive Resource Person for evaluating inventions of the students in Tangalle Educational zone, 2013.
  • 8. Exclusive Resource Person for training workshop for the winning inventors in southern province, MR/Sujatha Vidyalaya,2013.
  • 9. Exclusive Resource Person for evaluating Short Video Film Competition (Future Dreams Science Exhibition), GL/Kalahe Sri Sumangalodaya School, 2016.
  • 10. Keynote speaker for Art and Commerce students of academic year 2013-2015, MR/Rohana Vidyalaya, 2013.
  • 11. Exclusive Resource Person for evaluating inventions of Eastern Province organized by Sri Lanka Inventors Commission, Mahajana College, Battcaloa, 2017.
  • 12. Keynote speaker for G.C.E. (A/L) students, HA/Rajakeeya M.M.V., 2013.
  • 13. Exclusive Resource Person for evaluating inventions of HA/Walasmulla National School, 2014.
  • 14. Exclusive Resource Person for Stakeholders Meeting for Automated Hopper Making Machine, NERD Centre, 2015.
  • 15. Exclusive Resource Person of the Exhibition for G.C.E. (A/L) Physics Students held at Department of Physics, University of Ruhuna in 2003.
  • 16. Served as the Coordinator and point of contact, Inter University Innovation Competition-SIIIP (Solutions, Ideas, Innovations, Inventions and products), organized by the Ministry of Higher Education in 2013.
  • 17. Served as the Chief Examiner, G.C.E. (A/L) Examination, Physics, appointed by Department of Examinations, Sri Lanka, from 2011 to 2019.
  • 18. Served as an Examiner (Re scrutiny panel) G.C.E. (A/L) Examination, Physics, Department of Examinations, Sri Lanka, from 2011 to 2019.