Page 24 - Science E-Book Prep.3 2024-2025 1st term_ unit 2_Neat

Science Department
Prep.3

Science technology and society:

Land surveyors and topographical scientists use devices provided by mirrors
and lenses to determine heights and distances by sending a beam of laser
rays and receive it then calculate the time the laser beam will take to bounce
from a distant point and returns to its source.

First Term 42