Practice on Measuring Length and Processing Experiment Data

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Practice on Measuring Length and Processing
Experiment Data
11 3016 Liu Xiaoyu
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• What we need to do in this experiment?
• To obtain the volume of a hollow cylinder and
  a sphere
• What measuring tools we can use ?
• A metal ruler, a vernier caliper a
  micrometer
• Why we need to do such an experiment?
• 1. Know the correct use of the vernier
  caliper the micrometer
• 2. Do some exercises for processing
  experiment data

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• 1.Introduction of tools

1).Metal ruler
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• Parameters for a ruler
• Graduation value (i) defined as the value
  between two closed graduation marks.
• Instrument error ( ) defined as half of
  the graduation value.

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2). Vernier caliper
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• Parameters for a vernier caliper
• Graduation value defined as ia/n.
• Instrument error same value as the
• graduation
  value.
• Rules for reading LL0ki

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3). Micrometer
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• Parameters for a micrometer
• Graduation value also can be defined as ia/n
• Instrument error half of the graduation
  value.
• Rules for reading
• The final result the reading the original
  
• 
  reading

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2. Experiment data
1) Height of the hollow cylinder (measured by the
metal ruler) mm
Times h
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2
3
4
5
Mean value
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2). Outside inside diameter of the hollow
cylinder (measured by the vernier caliper)

mm
Times Do Di
1
2
3
4
5
Mean value
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3). Diameter of the sphere (measured by the
micrometer) mm
Times The original reading The reading Final D
1
2
3
4
5
Mean value Mean value Mean value
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3.Data processing

• 1). Volume of the hollow cylinder

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• 2).Volume of the sphere