6.Arrange the setup for absorption and reflection as shown below.
Place the transmitter and receiver horns facing and approximately 10 cm from each other. Adjust the sensitivity of the meter to read a convenient value (e.g., 100). This is the maximum electric-field amplitude (E ) detected by the receiver. Place at least four different materials (two metal, one nonmetal, and lucite) at an angle of 45° with respect to the beam, and record the transmitted amplitude (T ) for each material. Rotate the receiver so that it is at a right angle to the transmitter (as measured by the protractor), place the materials at an angle of 45° with respect to the beam, and record the reflected amplitude (R ) for each material. Using Eq. (4) , calculate the percentage f A of the incident microwave intensity absorbed by each material.