The device for measuring the current or emf is connected within the circuit of the thermocouple. It measures the amount of emf flowing through the circuit due to the two junctions of the two dissimilar metals maintained at different temperatures. In figure 2 the two junctions of the thermocouple and the device used for measurement of emf (potentiometer) are shown.
I think that this is what advertisers are shooting for when they pay the big price to get their ads up there. Regular billboards are just as effective as ever, even though there are now digital billboards being made that can have multiple ads on them and switch between them every few seconds.
An advertising plan and an advertising strategy provide the framework for small businesses and their advertising agencies to develop, review and measure the effectiveness of advertising campaigns in line with advertising and marketing objectives.n advertising strategy provides an overview and broad direction for the advertising campaign. If the advertising objective is to increase New York consumers' awareness of a local food brand by 25 percent, for example, the strategy will describe how advertising can meet that objective.