Consider two z-directed hertzian dipoles spaced a distance d apart along the x-axis. the right dipole is driven at a magnitude and phase difference ae with respect to the left. sketch the normalized radiation pattern (or use matlab! ) in the x-y planes for the following cases: (a) d-ad 1 (b)d-/2. ad-1 (c) d-2, ad in which direction() is the gain maximum for each case? partial solution: (a) maxima: 60°, 120. minima: 0, 90", 180 (b) maxima: 109.5. minima: 48.2 (c) maxima: 29.0, 68.0°,97.2, 128.7 minima: 51.3, 82.s". 112, 151

freezing

deposition

condensation

explanation;

melting also called fusion is the process where solid becomes liquid, sublimation is the process where solid becomes gaseous without first changing to liquid, deposition involves change from gaseous to solid state, freezing involves change from liquid to solid, boiling or evaporation involves change of liquid to gaseous state, while condensation is the change from gaseous state to liquid state.

endothermic reactions involves absorption of heat from the surroundings or the environment while exothermic reactions involves loss of heat energy to the surroundings.

in this case, sublimation, evaporation and melting are endothermic reactions (gain energy from the environment) while, freezing, deposition and condensation are exothermic (loss of energy to the surroundings) reactions.

the answer is mosques. they are an important part of islamic culture.