1: Bao couldn’t a light source such as the sun refract off of the metal giving Jiao a visual representation of which metal reflects light the easiest.
2: Make sure each piece of metal is receiving an equal amount of light. Set each piece in the identical spot the previous was tested.
3: Copper shall reflect light the best.
Please mark brainliest :)
Answer:
Interlocking guards, also known as barrier guards, automatically shut off or disengage the power source when the guard is open or removed.
Explanation:
