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17 Cards in this Set
- Front
- Back
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Nano |
-n -10-9 |
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micro |
-μ -10-6 |
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Milli |
-m -10-3 |
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Centi |
-c -10-2 |
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Deci |
-d -10-1 |
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Kilo |
-K -103 |
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Mega |
- M -106 |
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Giga |
-G -109 |
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Tera |
- T -1012 |
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Errors to avoid when taking measurement of length |
-Parallax error (looking at the reading perpendicularly) -Zero error (verifying that the instrument isn't damaged and using the y-x method) |
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How to read a micrometer screw gauge |
1. Note the reading just before the thimble scale 2. Take the division coinciding with the datum line on the thimble scale and multiply by the accuracy of the instrument 3. Sum both readings |
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How to read a vernier calliper |
1. Note the reading just before the 0th division on the main scale 2. Take the division on the vernier scale coinciding with one of the divisions on the main scale and multiply it by the accuracy of the instrument 3. Sum up both readings |
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Accuracy of a ruler |
-0.1 cm -1 mm |
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Accuracy of a vernier calliper |
-0.01 cm -0.1 mm |
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Accuracy of the micrometer screw gauge |
-0.001 cm -0.01 mm |
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What is a scalar quantity |
It is one that has a magnitude only |
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What is a vector quantity |
It is one which has both magnitude and direction |
