anyway last friday, during physics, we did the "interference of light"

i like the part when mr john said that the laser can cause skin cancer lol....

everyone was like scared of it haha...in the end it as just a normal typical laser..

he said that to aviod distraction during his explanations and stuff like that...later we saw the ripple tank

the interference is so..beautiful.. lala...

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at last he demonstrate how the diffraction of light and kenny when to draw the dots behind on the white board lol...

and thats about it ;D