Presentation Slide on mercury thermometer

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1. Welcome everybody

2. We are Presenting………. Mercury Thermometer

3. History Inventor Daniel Gabriel Fahrenheit ( 24 May 1686- 16 September 1736 )

4. What is Thermometer?

5. Mercury is Used Because……. Rapid heat conductor Linear expansion Low freezing point (-40 c), high boiling point (357 c ) No capillary force between mercury and tube Mercury does not wet the tube Surface

6. Structure Of Mercury Thermometer

7. Uses of Mercury Thermometer ? Fever Measurement Food Temperature measurement Room Temperature measurement Industrial Product’s Temperature measurement Determine Liquid Temperature

8. Basic Principals Farenheit Proper Lines Indication 1 degree Short Line indicate .2 degree Celcious Long Line indicate 1 degree or .5 degree Short Line indicate .1 degree

9. Advantage Cheap Durable Accurate Easily Calibrated

10. Disadvantage Display is harder to read. Does not work below - 39 C. Cannot be used for thermograph. Slow response. Mercury vapor is poisonous.

11. Thanks to Everybody