The compass needle is kept in a closed glass vessel to prevent any interference from external magnetic fields, which could disrupt its accurate alignment with the Earth's magnetic field. Keeping the needle enclosed helps maintain its sensitivity and stability, ensuring that it always points towards the magnetic north.
The liquid is there to dampen the movement of the needle. Without the liquid, the needle would spin and jiggle about rapidly. Hence the need to slow the movement down - it makes the compass easier to use.
The fore and aft magnets in a magnetic compass help to reduce the oscillations of the compass card caused by the movement of the vessel. These magnets stabilize the compass card and improve its accuracy by minimizing the effects of the ship's motion on the reading.
The magnetic compass was replaced with more advanced navigation technology such as GPS (Global Positioning System). GPS provides more accurate and reliable information about a vessel's location, speed, and direction.
The standard answer is constant bearing. As soon as a another vessel is sighted at sea, you take a compass bearing on it, and you keep on taking compass bearings. If the bearing does not change, you are on a collision course. If it's on your port side, do nothing. If it's on your starboard side, give way by changing speed or course.
The errors of a magnetic compass include deviation, which is caused by local magnetic fields on the vessel, and variation, which is the difference between true north and magnetic north. Other errors can be caused by inclination, interference from metallic objects, and incorrect calibration. It is important to regularly check and adjust the compass to minimize these errors for accurate navigation.
The liquid is there to dampen the movement of the needle. Without the liquid, the needle would spin and jiggle about rapidly. Hence the need to slow the movement down - it makes the compass easier to use.
To keep things from getting lost ... remember that the very first compasses were NOT closed, they consisted of a bowl of water with a load-stone (fastened to a piece of wood) floating - even earlier one just had a piece of string tied to the lode stone.
The needle on a compass always points true north. In marine use, a compass can be used to adjust the path of a vessel so it stays on course. A compass can also help one detour from a charted course in order to avoid a storm or other hazard.
Aspirate
A gyro compass consists of a spinning gyroscope, a compass card, and a correcting mechanism. The spinning gyroscope maintains its orientation in space and serves as the reference point for navigation. The compass card aligns with the gyro's axis to indicate the heading of the vessel. The correcting mechanism adjusts for errors due to the vessel's motion to provide accurate heading information.
A blind-ended vessel is a vessel that is closed at one end, or has a 'dead end'. They can be found in the lymphatic system, for example.
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Because gas molecules easily diffuse and fill completely a closed vessel.
With your vessel's bow pointed at zero or 360 on your compass, the green light should be directed at 135 degrees.
open -open vessel means dispersion is same at inlet & outlet.there is bulk mixing. Eg: Tubular reactors.
Øculture incubated in a closed vessel with a single batch of medium
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