To take into account the loss in the cable, we just have to deduce the 3 dB loss from the 18 dBi gain and use a modified antenna gain of G = 15 dBi. In one click we find the electrical field strength E = 1.4 V/m, the magnetic field strength H = 3.7 mA/m and the power density S = 5.0 mW/m2.
Types of Data: Primary and Secondary data. There are many ways of classifying data. A common classification is based upon who collected the data. Primary data: Data collected by the investigator himself/ herself for a specific purpose. Examples: Data collected by a student for his/her thesis or research project. (In movies) The hero is directly told by the heroine that he is her âideal manâ.
Primary vs Secondary Data There is a difference between Primary and Secondary data, which are being used for varied research purposes. These mainly differ based on the objective of the data collection. If the data collected, are original and collected for the first time by a researcher or investigator then those are the primary data. On the other hand, if the data are collected by using already available sources, then those are the secondary data. This is the main difference between Primary and Secondary data. This article attempts to provide a better understanding of both types of data while elaborating the difference between the two types. What is Primary Data?