bulb is large and thick-walled
stem is long and thin
bulb is small and thicked-walled
liquid is of high density and the bore is large
bulb is thin-walled and the liquid is a good conductor of heat
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Discussions (8)
1.The sensitivity of a mercury thermometer can be increased by using a smaller mercury bulb, thinner wall and smaller bore.
2.A smaller bulb contains less mercury and hence absorbs heat in shorter time. As a result it can response faster to temperature change.
3.A glass bulb with thinner wall can transfer heat to the bulb easier. Therefore, the thermometer can response quickly to small changes of temperature near the surrounding.
4.Capillary with narrow bore produces a greater change in the length of the mercury column. Therefore a small change in temperature can be detected easily.
For high sensitivity,liquid -in-glass thermometer has its bulb made of thin glass;this enables the liquid in the bulb to assume the temperature of its surrounding quickly,thereby leading to a short response to time."A" is wrong and "E" is correct.
