Derrick thinks his grandfather is boring when he tells stories about being in the vietnam war. derrick doesn’t want to be rude, so he nods his head and says “uh huh” and “wow” a lot. his grandfather is hurt by derrick’s as he can tell derrick is not truly listening.

"Pseudo-listening"

Explanation:

According to sociologists, what Derrick is doing to his grandfather is known as "Pseudo-listening". This is the behavior or acting as though you are listening but in fact you are either completely ignoring the person talking to you or just barely listening, meanwhile you are preoccupied on something else either in your mind or in the vicinity. People who use Pseudo-listening are doing it in order to not offend the person who is talking which is what Derrick has been doing.

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uses : -

1.aneroid barometers primarily measure whether pressure is rising or falling.

2.aneroid barometers are often used for reading pressure in homes and recreational boats.  

3.other uses may include barographs in meteorology and altimeters in modern aircraft.  

4.this type of barometer can announce whether a high or low pressure system is coming or whether it is becoming more intense.  

5.there are different types of aneroid barometers, such as the altimeter, which measures altitude, or distance above sea level.  

6.another example is a barograph, which is a modified aneroid barometer that provides constant readings of atmospheric pressure on graph paper.  

7.when used in this capacity, the aneroid barometer can store a week's worth of data.

android diameter a device for measuring atmospheric pressure , often specially calibrated for use as an altimeter ,consisting of a box or chamber partially exhaused of air, having an elastic top and a pointer to indicate the degree of compression of the top caused by the external air

refer to the attachment for the characteristics : -

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