Light travels in a straight line
.Method of experiment for cardboard to 3 sheet, and a hole in the middle, every sheet, then the paper, both 3 sheet, Maria to a hole in the middle. In the match. Light 1 bars for fire set behind a sheet of paper and 3 sheet. To look through a hole in the paper, the 3Then try to move the sheet of paper sheet by any one trying to match the hole observe and record the experiment
.The experimental results, it was found that when the holes in the paper. In the paper the matching position, we can see the candle. When we move the sheets of paper. Sheet sheet one. We can't see any light of candle. This is becauseTravel in a straight line. Always
.
การแปล กรุณารอสักครู่..
