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Why there are two indentations in the pivot of a plotting compass?
Wiki User
∙ 11y ago
pivot is the central part of compass
Wiki User
∙ 11y ago
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What are the two poles of a magnet?
North pole and South pole. This can be easily identified using a compass. Be careful not to re-magnatize the compass.
What does a dip compass do?
A compass does not point to the North Pole, it aligns itself with the lines of magnetic force at your location. In the Northern Hemisphere you are closer to the North Pole, so the strength from that direction is greater, and the compass "points north". In the Southern Hemisphere, similarly, the magnetic South Pole is closer, and the other end of the compass points to the south Pole. So far so good. But when you are close to either pole, the magnetic field dips into the earth - steeply at the Poles themselves. [Ordinary compasses are counterbalanced a little so the compass needle or card is approximately horizontal. The compass manufacturers divide the earth into five 'balance' zones.] So a dip compass is suspended between two pivots, and will indicate the steepness of the magnetic fields dip. It differs from an ordinary compass.
What is the The north magnetic pole of a compass needle is attracted to the magnetic pole of the earth.?
The needle on a compass points to the North Magnetic Pole. CommentA compass points to Magnetic North, not to the north magnetic pole. They are two different things -the first is location, the second is magnetic polarity.
Why does a compass needle always point to magetic north?
The simple answer is that the magnetized needle is being attracted by the North Magnetic Pole (which is close to, but not the same as the geographic North Pole).However, the colored part of the needle is not actually drawn to the North, although that would be the result of unlike charges being drawn together. The actual effect is that the needle aligns itself with the parallel lines of magnetism connecting the North and South magnetic poles, so that it lines up North and South, its northern end pointed north and its southern end pointed south.The Earth's magnetic field is generated by the movement of its iron core in relation to the crust.No matter where you stand on Earth, you can hold a compass in your hand and it will point toward the North Pole. What an unbelievably neat and amazing thing! Imagine that you are in the middle of the ocean, and you are looking all around you in every direction and all you can see is water, and it is overcast so you cannot see the sun... How in the world would you know which way to go unless you had a compass to tell you which way is "up"? Long before GPS satellites and other high-tech navigational aids, the compass gave humans an easy and inexpensive way to orient themselves.But what makes a compass work the way it does? And why is it useful for detecting small magnetic fields, as we saw in How Electromagnets Work? In this article, we will answer all of these questions, and we'll also see how to create a compass from scratch!A compass is an extremely simple device. A magnetic compass (as opposed to a gyroscopic compass) consists of a small, lightweight magnet balanced on a nearly frictionless pivot point. The magnet is generally called a needle. One end of the needle is often marked "N," for north, or colored in some way to indicate that it points toward north. On the surface, that's all there is to a compass.The reason why a compass works is more interesting. It turns out that you can think of the Earth as having a gigantic bar magnet buried inside. In order for the north end of the compass to point toward the North Pole, you have to assume that the buried bar magnet has its south end at the North Pole, as shown in the diagram at the right. If you think of the world this way, then you can see that the normal "opposites attract" rule of magnets would cause the north end of the compass needle to point toward the south end of the buried bar magnet. So the compass points toward the North Pole.To be completely accurate, the bar magnet does not run exactly along the Earth's rotational axis. It is skewed slightly off center. This skew is called the declination, and most good maps indicate what the declination is in different areas (since it changes a little depending on where you are on the planet).The magnetic field of the Earth is fairly weak on the surface. After all, the planet Earth is almost 8,000 miles in diameter, so the magnetic field has to travel a long way to affect your compass. That is why a compass needs to have a lightweight magnet and a frictionless bearing. Otherwise, there just isn't enough strength in the Earth's magnetic field to turn the needle.The "big bar magnet buried in the core" analogy works to explain why the Earth has a magnetic field, but obviously that is not what is really happening. So what is really happening?No one knows for sure, but there is a working theory currently making the rounds. As seen on the above, the Earth's core is thought to consist largely of molten iron (red). But at the very core, the pressure is so great that this superhot iron crystallizes into a solid. Convection caused by heat radiating from the core, along with the rotation of the Earth, causes the liquid iron to move in a rotational pattern. It is believed that these rotational forces in the liquid iron layer lead to weak magnetic forces around the axis of spin.It turns out that because the Earth's magnetic field is so weak, a compass is nothing but a detector for very slight magnetic fields created by anything. That is why we can use a compass to detect the small magnetic field produced by a wire carrying a currentThe Core of our earth is molten iron, and it's spinning really friggen fast. That spin of the iron creates a large electro-magnetic field. Similar to a small bar magnet, it has two poles. The needle in the compas will be attracted to the pull of the northpoleansw2. your compass needle just aligns itself with the lines of magnetic force in your vicinity. Which in turn are influenced by the position of the poles.because of the poles magnetic fieldA compass needle aligns itself to the earth's magnetic field. The direction of the earth's magnetic extends from the earth's Magnetic South to its Magnetic North. Remember, the terms 'Magnetic North' and 'Magnetic South' refer to LOCATIONS in the Arctic and Antarctic, respectively, and not to the magnetic polarities at these locations. Because 'unlike poles attract', this means that the polarity of Magnetic North is a south pole, thus attracting the north (coloured) pole of a compass needle.The iron core of the Earth acts like a giant bar magnet buried in the Earth.Since that giant bar magnet is pointing South, opposites attract and the magnetized needle points North.
Why does a compass needle not point to the geographic North Pole?
The Compass needle not points towards north when placed near iron objects or any magnetic substance(an object which is attracted by a magnet). Edit; Apart from the above, the molten core of the Earth induces circulating currents that place the North Magnetic Pole in Canada and not at the Geographic North Pole; and for that matter the South Pole similarly. It is both intriguing and fortunate that the Geographic and Magnetic Poles are so close together. Edit: It also has a problem pointing north if you're directly above either Magnetic pole.
Is an axis a pivot joint?
The axis, C2, is part of a pivot joint with C1. These two form a pivot joint.
What could cause two indentations on the top of your head that showed up about two months ago?
It is most likely nothing to worry about. Indentations in the skull are very common and are caused by the abnormal growth of the soft tissue and bones in the human skull.
What types of pivot joints are there in your body?
There are not two types of pivot joints, there are two pivot joints: one between the atlas and the axis of the of the cervical vertebrae, the second is in the elbows between the radius in the ulna.
Why do you use a compass?
One type of compass is a magnetic or electronic device that shows the cardinal directions by indicating North (Magnetic or True). It is used for finding directions. Another type of compass can also be known as "dividers", depending on whether or not they contain a pencil. They look like two sticks joined together at one end with a hinge. This allows the points of the sticks to spread or close. This device is used to measure distances on maps or charts & for plotting courses. The type with a pencil is used for drawing circles. See the Related Link(s) listed below for more information: ++++ A compass (singular) is used to find direction and location (the latter by plotting intersecting bearings on the map). [A pair of] compasses (plural) is not the same as dividers. Compasses have a pencil or pen for drawing circles & arcs; dividers have two sharp steel points.
What were the two navigational instruments in Prince Henry school?
compass, and the astrolabe
Is the pivot joint in the foot?
There are two pivot joints. One between C1 and C2 (first two cervical vertebrae) and between the radius and ulna in the lower forearm.
Which of the following would demonstrate the difference in kinetic energy between two object?
Throw the two objects into a foam wall and compare the indentations they create.
What is a pivotal?
it means of vital or central importance in the chapter in bankruptcy.
Why does a pair of scissors have two fulcrums?
I think they only have one, the pivot point where the two blades are joined. Mechanically, scissors are a first-class double-lever with the pivot acting as the fulcrum.
How many syllables does compass have?
Two
How many syllable are in the word compass?
two
How can you make a compass needle point toward Earth's SOUTH pole?
You don't have to do anything to it.It's impossible to make a magnet that has only one magnetic pole. Any magneticobject that you happen to be using as a compass has two poles on it. Hang theobject up on a string, or mount it on a pivot. One of its poles points to Earth'snorth magnetic pole, and the other end of it points to the Earth's south magneticpole.(Note that the compass points to the Earth's magneticpoles, and has no ideawhere the geographic poles are. If you're in a situation where your safety oryour job may involve the use of your compass, then it's important to know thedifference.)
