Seismometers are tools which measure motion in the ground including seismic waves generated by earthquakes, volcanoes, and other activities which might create seismic waves. Seismometers measure any movement of seismic activity in the earth and today this is done by electronic means whereby the machine measures any changes in seismic activity in the surrounding areas of the seismometer. The first seismometer is believed to have been invented by Zhang Heng of China's Han Dynasty in 132 AD.
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In vector calculus, the curl is a vector operator that describes the infinitesimal rotation of a vector field in three-dimensional Euclidean space. At every point in the field, the curl of that point is represented by a vector. The attributes of this vector (length and direction) characterize the rotation at that point. The direction of the curl is the axis of rotation, as determined by the right-hand rule, and the magnitude of the curl is the magnitude of rotation. If the vector field represents the flow velocity of a moving fluid, then the curl is the circulation density of the fluid. A vector field whose curl is zero is called irrotational. The curl is a form of differentiation for vector fields. The corresponding form of the fundamental theorem of calculus is Stokes' theorem, which relates the surface integral of the curl of a vector field to the line integral of the vector field around the boundary curve.
The alternative terminology rotation or rotational and alternative notations rot F and ∇ × F are often used (the former especially in many European countries, the latter, using the del (or nabla) operator and the cross product, is more used in other countries) for curl F.
Unlike the gradient and divergence, curl does not generalize as simply to other dimensions; some generalizations are possible, but only in three dimensions is the geometrically defined curl of a vector field again a vector field. This is a phenomenon similar to the 3-dimensional cross product, and the connection is reflected in the notation ∇ × for the curl.
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No.
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Personally in my own opinion I do not believe they should get the same amount of time off as women. Yes, it is still their child and they deserve to be with them and enjoy all their moments together but a women's body has just gone through a lot and deserves its proper rest, while her spouse just had to watch. Another reason is because women can produce milk to feed the baby, where men cannot therefore the men should just get a little time off, but not the same amount as the women.
The natural geography of New Zealand supplies its people with the major sources of income which are timber, tourism and natural gas.
Options B, C and E are correct.
<h3>What is geography?</h3>
The examination of relation of places, people and their environments in which they are surviving is called the geography.
- New Zealand is one of the regions founded in the southeastern side of the Pacific Ocean. It is a location composed mountainous islands being separated into two islands namely, Northern and Southern.
- It is having rich wildlife biodiversity which could not be seen in any part of the world. It is being visited by more than two millions tourists every year and is very famous for natural gas and timber related products.
Therefore, apart from the options A and D, all options are correct.
Learn more about geography in the related link:
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Radiometric dating is dating a rock or mineral by measuring the proportions of an original radioactive material and its decay products. We need to know the rate at which radioactive decay occurs and <span>how much radioactive decay has occurred. Hope this answers the question. Have a nice day.</span>
