User:Eswarmvmyk
From Karnataka Open Educational Resources
Harnessing Light:Possibilities an Challenges
UN has announced year 2015 as "Year of Lght" to commemorate 21st century is 'light technology based'.
Here is a ppt file all about it.
UN has announced year 2015 as "Year of Lght" to commemorate 21st century is 'light technology based'.
Here is a ppt file all about it.