Types of compasses

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Types of compasses by Mind Map: Types of compasses

1. Comparisons

1.1. Viking sunstone

1.1.1. Dry

1.1.2. No moving parts

1.1.3. Non-electric

1.1.4. Requires human operation

1.1.5. Relies on minerals

1.1.6. Small size

1.1.7. Old

1.1.8. Not used anymore

1.1.9. Finds magnetic north

1.1.10. Can be inaccurate due to human error

1.1.11. Mainly used on ships

1.2. Gyro-compass

1.2.1. Dry

1.2.2. Contains moving parts

1.2.3. Electric

1.2.4. Automatic

1.2.5. Relies on spinning parts and natural forces

1.2.6. Medium size

1.2.7. Modern

1.2.8. Mainly used nowadays

1.2.9. Finds true north

1.2.10. Most accurate

1.2.11. Mainly used on ships and aeroplanes

1.3. Early Chinese compass

1.3.1. Dry

1.3.2. Contain moving parts

1.3.3. Non-electric

1.3.4. Automatic

1.3.5. Relies on minerals

1.3.6. Large size

1.3.7. Old

1.3.8. Not used anymore

1.3.9. Finds magnetic north

1.3.10. Can be inaccurate due to human error

1.3.11. Used on land and ships

1.4. Wet compasses

1.4.1. Contains liquids

1.4.2. Contain moving parts

1.4.3. Non-electric

1.4.4. Automatic

1.4.5. Relies on minerals

1.4.6. Small size

1.4.7. Old

1.4.8. Still used

1.4.9. Finds magnetic north

1.4.10. Can be inaccurate due to human error

1.4.11. Used on ships and land

2. Wet compasses

2.1. Uses a magnetic needle to indicate direction

2.2. Needle suspended by liquid

2.3. Stays stable horizontally without needing 2 outer rings in dry compasses

2.4. Arrived in Europe with the dry compass

3. Early Chinese compass

3.1. Invented in China during the Han dynasty between 2nd century BC and 1st century AD

3.2. First used for Feng Shui

3.3. Uses a lodestone, a naturally magnetic iron ore

3.4. The spoon will naturally point south

4. Gyro-compass

4.1. The most modern type of compass

4.2. Finds the true north and not the magnetic north

4.3. Not affected by large bits of magnetic material

4.4. Used mostly on ships

4.5. Uses of a form of gyroscope, a electrically powered fast spinning wheel and utilising the basic physical laws

5. Viking Sunstone

5.1. Invented by vikings

5.2. Is a piece of calcium carbonate, or Iceland spar

5.3. Usage of a shadow stick simulates the shadow that the sun would have made if it was above the horizon

5.4. Vikings were sailing in the sea with Viking Sunstones in around 700-1000 AD

5.5. Works because it depolarises the light that shines through it and create patterns and helps pinpoint the position of the sun below the horizon