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.
Advertising whether itâs in print, over the airwaves, or via computer is about presenting a special benefit-laden offer to your specific target prospects. Itâs about making a successful sales pitch to the right people, and convincing them to make a purchase. Thatâs the whole concept of advertising in a nutshell.