Answer:
The theremin is considered to be the first electronic musical instrument ever made, a legendary machine. It is also the only instrument in the world that can be played without needing to be touched! The magnetic field is changed by the varying distances between the two hands.
Explanation:
oh god that toy brings back memories
Display is important because it helps someone who is viewing a photograph to identify what is being captured in the photograph. If there is "bad display", someone viewing the photograph wouldn't be able to enjoy the image without being distracted by something like bad photo quality or blurriness.
