A wave of 0.3 m wave height and period 1.2 seconds is generated in a wave tank. The wave tank is 150 m. long, 3 m wide, and 4 m deep and filled with fresh water to a depth of 3 m. The density of water is 997 kg/m3. Required: a)Evaluate the wave celerity, length, group celerity, and energy in one wavelength. b)Determine the water particle velocity and pressure at a depth of 1 m below the still water level (SWL) and 0.2 m ahead of the wave crest. Use SI Units. c)Is the wave breaking

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