A slight change in the example circuitIf you inadvertently made any changes to the example circuit, reload example. cir. Now we will experiment with changing the OR gate to an AND gate. First, it will help to keep track of where the gates are by locating them within a rectangular grid. To display the grid, select On from the Grid menu. Then choose Delete from the Changes menu. Now you can delete any gate or switch in your circuit by clicking it. Click the OR gate. The gate together with the lines coming into it should disappear. Next, select the AND gate from the Gates menu. Click in the area previously occupied by the OR gate. You should see an AND gate appear in the grid cell where you clicked.

a straight line sloped

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

distance = 150m

displ = root (50 ^2 + 100^2)

root(2500+10000)

root 125000