Proceedings of the 23rd Technical Session - March 2007

Modelling Wind Speed Distributions in Selected Weather Stations
W. P.L . Fernando and D. U. J. Sonnadara

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3D Modelling of Electrical Discharges
D. I. Amarasinghe and D. U. J. Sonnadara

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Detection of License Plates of Vehicles
W. K. I. L Wanniarachchi, D. U. J. Sonnadara and M. K. Jayananda

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A Home-built Vibrating Sample Magnetometer
A. U. Abeysekara and W. M. K. P Wijayaratna

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Testing the Quality and Efficiency of Oil Filters used in Vehicles 
B. H. Randil Pushpananda and S. R. D. Rosa

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Noise Level Survey inside the Inter Provincial Buses in Sri Lanka
Saman Hapuarachchi, D. C. Jayaratna, C. Kalansuriya and A. S. Pannila

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A Cheap Automatic Solar Water Distiller 
P. H. C. A. Ihalawela and M. A. Careem

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A theoretical investigation of band gaps of conducing polymers - polythiophene, polypyrrole and polyfuran 
M. S. Senevirathne, A. Nanayakkara, and G. K. R. Senadeera

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Donor and Acceptor Density Variations in Electrodeposited Cuprous Oxide Thin Films 
K. M. D. C. Jayathileke1, W. Siripala and J. K. D. S. Jayanetti

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Microcontroller based Insulation Resistance Tester with Data Logging Facility
C. C. Dharmawardhana and C. M. Edirisinghe

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An Automated Telephone Billing System for Subscriber’s Use
L. S. J. Rathnayake and C. M. Edirisinghe

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Construction of Telephone Operable Message System
H. H. E. Jayaweera and R. Lelwala

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Institute of Physics, Sri Lanka