Malima Episode #11: Finding Radius and Finding Way Around in a Computer

Malima (New Directions in Innovation) is a Sinhala language TV series on science, technology and innovation.

Produced by Suminda Thilakasena and hosted by science writer Nalaka Gunawardene, this episode was produced and first broadcast by Sri Lanka’s Rupavahini TV channel on 9 August 2012.

Malima: Episode 11 presented by Nalaka Gunawardene from Nalaka Gunawardene on Vimeo.

This episode features the following elements:

• An interview with Dinesh Katugampola, a textile engineer who has invented the world’s first Radius Metre that calculates the radius of a circle. The Radius Meter – which comprises measuring instruments as well as a software based calculator – instantly works out the radius an arch or sphere by measuring only small part of that arch or sphere. In practical terms, this helps plot major arches in mechanical engineering, road and building construction and in many other fields. This invention won a silver medal in mechanical designs category at ‘Inventions Geneva’ international exhibition in April 2012. More at:

• Introducing Sri Lanka’s indigenous technology: Dongaraya is a simple device used by farmers to make noise from the breeze that, in turn, scares birds away from paddy fields.

• A Japanese university research team has developed a machine that can measure brain waves and capture different moods. We have a news story on what this means for future of brain-machine interface.

• An interview with Nipun Kavishka Silva a Grade 9 student at De Mazenod College, Kandana, Sri Lanka, who — with his sister Pipunika Silva, has invented ‘NP System’: a computer operating system for blind and visually impaired people. It assists those who cannot see to use computers by providing voice instructions as they use a Braille keyboard and mouse or touchpad. They were winners at Intel International Science and Engineering Fair (ISEF) in Pittsburgh, USA, in May 2012. More info at:

Author: Nalaka Gunawardene

A science writer by training, I've worked as a journalist and communication specialist across Asia for 30+ years. During this time, I have variously been a news reporter, feature writer, radio presenter, TV quizmaster, documentary film producer, foreign correspondent and journalist trainer. I continue to juggle some of these roles, while also blogging and tweeting and column writing.

Leave a Reply

Fill in your details below or click an icon to log in: Logo

You are commenting using your account. Log Out /  Change )

Facebook photo

You are commenting using your Facebook account. Log Out /  Change )

Connecting to %s

This site uses Akismet to reduce spam. Learn how your comment data is processed.

%d bloggers like this: