Ripple Tank Refraction

[@yasoobkazmi4678]

Thank you sir! Love from Pakistan😊😊

[@inayat2220]

I like the way that u teach you make it very easy for me amazing love from pakistan 🇵🇰

[@LameMakanthai]

You helped me out a lot God bless you Sir

[@Rosemarie.12481]

Love it ..from Pakistan ❤

[@jlpsinde]

Thanks very much