Search results
Results From The WOW.Com Content Network
In three or more dimensions, even two lines almost certainly do not intersect; pairs of non-parallel lines that do not intersect are called skew lines. But if an intersection does exist it can be found, as follows. In three dimensions a line is represented by the intersection of two planes, each of which has an equation of the form
Frequency allocation (or spectrum allocation) is the part of spectrum management dealing with the designation and regulation of the electromagnetic spectrum into frequency bands, normally done by governments in most countries. [1] Because radio propagation does not stop at national boundaries, governments have sought to harmonise the allocation ...
The most common example of frequency-division multiplexing is radio and television broadcasting, in which multiple radio signals at different frequencies pass through the air at the same time. Another example is cable television , in which many television channels are carried simultaneously on a single cable.
Lines A, B and C are concurrent in Y. In geometry, lines in a plane or higher-dimensional space are concurrent if they intersect at a single point.. The set of all lines through a point is called a pencil, and their common intersection is called the vertex of the pencil.
A projective subspace is a set of points with the property that for any two points of the set, all the points on the line determined by the two points are contained in the set. [2] Projective geometry can be viewed as affine geometry with vanishing points (points at infinity) added. An affine hyperplane together with the associated points at ...
For example, the first and fourth of Euclid's postulates, that there is a unique line between any two points and that all right angles are equal, hold in elliptic geometry. Postulate 3, that one can construct a circle with any given center and radius, fails if "any radius" is taken to mean "any real number", but holds if it is taken to mean ...
A straight line can trivially be drawn through those two points. For each of the remaining k-2 points in the subset, the probability that the point is "near enough" to the line is roughly w/L, which can be seen by considering the ratio of the area of the line tolerance zone (roughly wL) and the overall area (roughly L 2).
Examples: Frequency allocation band plans decided by standardization bodies, by national frequency authorities and in frequency resource auctions. Deployment of base station sites (or broadcasting transmitter site) Antenna heights; Channel frequency plans; Sector antenna directions; Selection of modulation and channel coding parameters