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.
Banner advertising refers to the use of a rectangular graphic display that stretches across the top, bottom or sides of a website. Banner advertising refers to the use of a rectangular graphic display that stretches across the top, bottom or sides of a website. The former type of banner advertisement is called a leaderboard, while the latter is called a skyscraper and is positions on a web page's sidebars. Banner ads are image-based rather than text-based and are a popular form of online advertising. The purpose of banner advertising is to promote a brand and/or to get visitors from the host website to go to the advertiser's website. Breaking Down 'Banner Advertising'