PUMPA - SMART LEARNING
எங்கள் ஆசிரியர்களுடன் 1-ஆன்-1 ஆலோசனை நேரத்தைப் பெறுங்கள். டாப்பர் ஆவதற்கு நாங்கள் பயிற்சி அளிப்போம்
Book Free DemoOn a clear glass window facing towards an open area, fix a small rectangular strip of paper. Remove the strip after a few days.
Do you notice a difference between the rectangular section that was left covered with paper and the rest of the glass window?
between the rectangular section that was left covered with paper and the rest of the glass window.
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