Lesson 14 - Reflection and Refraction of Waves (Part 01) | Grade 09 Science in English

[@flowerflowerflowerf-lower9562]

Thank you sir for your kind service❤

[@anushalakmali6297]

Thank for your lesson

[@ranmiusicnapol1358]

Thank usir forthe first chapter,I couldn't understand but u teach

[@SUDHUWAOFFICIAL....5206]

Thams sir❤🎉

[@tHeBlaCkbRackEt]

21:56 , what about the depth of sea sir ?it does not take any types of lights on it ?😊

[@sethunithihansa8571]

Its not done by using light friend, its done by using Echos(sound bounced back )ultrasound waves are sent into the seabed 😊

[@anushalakmali6297]

😍😍😍

[@selengeni]

Thanks sir🥰

[@samanthakodithuwakku2555]

Thanks

[@Sharmi01-q1z]

❤❤❤❤

[@kabiart882]

Thanks