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.
Billboards are large advertising structures placed alongside busy roads to be noticed by drivers and passing pedestrians. It is sometimes called hoarding in other parts of the world. These billboards could attract pedestrians not only because they are large but also due to the variety of designs that it posses. It gives a designer so much room for customizing by using extensions and embellishments.
Billboard photos often wind up printing as large as your house, making high-resolution images (300 DPI min.) a must. And good billboard designers leverage that huge scale to make a BIG visual splash, displaying one central image thatâs 25' wide rather than five dinky images that lack emotional impact from a distance.