Hi all, I'm a Usman,a physics student from Pakistan

[Usman Younis]

Hi all, I'm a Usman,a physics student from Pakistan .I have joined this forum to polish my physics skills and to share whatever I know about physics ,its principles and so many on......

 

[Evo]

Welcome Usman! please read our rules here https://www.physicsforums.com/threads/physics-forums-global-guidelines.414380/ and please do not change the font color or size.