Physical Quantities and Units

1. Length

1.1. The Metre Rule

1.1.1. precision : 1.000m to 0.001m(1mm)

1.1.2. parallex error

1.1.2.1. wrong positioning of the eye

1.2. The Vernier Calipers

1.2.1. precision : 0.01cm/0.1mm

1.3. The Micrometer Screw Gauge

1.3.1. precision : 0.001cm/0.01mm

2. Mass

2.1. Electronic Beam Balance

2.1.1. 0.1g

3. Time

3.1. Digital Stopwatch

3.1.1. precision : 0.01s

3.2. Analogue Stopwatch

3.2.1. precision : 0.1s

3.3. Pendulum

3.3.1. Oscillation

4. Seven basic quantities

4.1. length

4.1.1. m/metre

4.2. mass

4.2.1. kg/kilogram

4.3. time

4.3.1. s/second

4.4. electric current

4.4.1. A/ampere

4.5. temperature

4.5.1. K/kelvin

4.6. amount of substance

4.6.1. Cd/candela

4.7. luminous intensity

4.7.1. mol/mole

5. Prefixes in units

5.1. tera

5.1.1. 10.12

5.2. giga

5.2.1. 10.9

5.3. mega

5.3.1. 10.6

5.4. kilo

5.4.1. 10.3

5.5. hecto

5.5.1. 10.2

5.6. deka

5.6.1. 10.1

5.7. deci

5.7.1. 10.-1

5.8. centi

5.8.1. 10.-2

5.9. milli

5.9.1. 10.-3

5.10. micro

5.10.1. 10.-6

5.11. nano

5.11.1. 10.-9

5.12. pico

5.12.1. 10.-12

5.13. femto

5.13.1. 10.-15