Different things motivate different people. While you may be motivated to get good grades and get a scholarship to an Ivy League college after high school, your classmate's motivation might be to finish high school and go backpacking around the world. Do some research on the Internet and at the school library, and write about the four different types of external and internal motivations: extrinsic, intrinsic, identified, and introjected, and provide examples for each. Also, consider a situation in which you were highly motivated (it does not have to be academic), and describe your motivation and the outcome of the situation.

electromagnetic shielding is the practice of reducing the electromagnetic field in a space by blocking the field with barriers made of conductive or magnetic materials. shielding is typically applied to enclosures to isolate electrical devices from their surroundings, and to cables to isolate wires from the environment through which the cable runs. electromagnetic shielding that blocks radio frequency electromagnetic radiation is also known as rf shielding.

the shielding can reduce the coupling of radio waves, electromagnetic fields and electrostatic fields. a conductive enclosure used to block electrostatic fields is also known as a faraday cage. the amount of reduction depends very much upon the material used, its thickness, the size of the shielded volume and the frequency of the fields of interest and the size, shape and orientation of apertures in a shield to an incident electromagnetic

from wikipedia

technology is the application of the knowledge gained by science.