Ready for some new information and vocabulary? 😉
Now that you have learnt about geometrical shapes in English, let’s continue with this week’s topic…
What is a dimension?
To answer this question, a mathematician would say that a dimension of an object is given by the “minimum number of coordinates that we need to locate each point that it contains”.
But what does this mean? Here are some examples…
To start with, we can say that a point has zero dimension because its length is zero and there is no possibility to move outside of it.
A line, on the other hand, has one dimension (length), as we can locate each point on it using only one coordinate .
When we talk about solids, like cubes, cylinders or spheres, however, we realize that we need a third coordinate, depth (or height), to locate any point in these objects because we are considering their interiors, and so these objects belong to the third dimensional space.
Modern physics has also added other dimensional spaces, as time (the fourth dimension), together with other very interesting theories about other possible dimensions, about which, however, we may deal with another time. 😉