what is the symbolic meaning of the word " spectrum"? how can it related to rainbow?

Answer 1

A spectrum (plural: spectra) is a condition or value that is not limited to a specific set of values but can vary infinitely within a continuum. The word has evolved from the old English word spectre meaning a ghost or apparition, but the modern meaning now comes from its use within science.

Spectrum saw its first scientific use within the field of optics to describe the rainbow of colors in visible light when separated using a prism; it has since been applied by analogy to many fields. Thus one might talk about the spectrum of political opinion, or the spectrum of activity of a drug, or the autistic spectrum. In these uses, values within a spectrum are not necessarily precisely defined numbers as in optics; exact values within the spectrum are not precisely quantifiable. Such use implies a broad range of conditions or behaviors grouped together and studied under a single title for ease of discussion.

In the 17th century the word spectrum was introduced into optics, referring to the range of colors observed when white light was dispersed through a prism. Soon the term referred to a plot of light intensity as a function of frequency or wavelength.

Relation to rainbow features
The term spectrum was soon applied to other waves, such as sound waves, and now applies to any signal that can be decomposed into frequency components. A spectrum is a usually 2-dimensional plot, of a compound signal, depicting the components by another measure. Sometimes, the word spectrum refers to the compound signal itself, such as the "spectrum of visible light", a reference to those electromagnetic waves which are visible to the human eye. Looking at light through a prism separates visible light into its colors according to wavelength. Violet at one end has the shortest wavelength and red at the other end has the longest wavelength of visible light. The colors in order are violet, blue, green, yellow, orange, red. As the wavelengths get bigger below the red visible light they become infrared, microwave, and radio. As the wavelengths get smaller above violet light, they become ultra-violet, x-ray, and gamma ray.

Answer 2

A spectrum (plural: spectra) is a condition or value that is not limited to a specific set of values but can vary infinitely within a continuum. The word has evolved from the old English word spectre meaning a ghost or apparition, but the modern meaning now comes from its use within science.

Spectrum saw its first scientific use within the field of optics to describe the rainbow of colors in visible light when separated using a prism; it has since been applied by analogy to many fields. Thus one might talk about the spectrum of political opinion, or the spectrum of activity of a drug, or the autistic spectrum. In these uses, values within a spectrum are not necessarily precisely defined numbers as in optics; exact values within the spectrum are not precisely quantifiable. Such use implies a broad range of conditions or behaviors grouped together and studied under a single title for ease of discussion.

In most modern usages of spectrum there is a unifying theme between extremes at either end. Some older usages of the word did not have a unifying theme, but they led to modern ones through a sequence of events set out below. Modern usages in mathematics did evolve from a unifying theme, but this may be difficult to recognize.

Answer 3

Simply put,
Light of different colours are made up of different wavelenghts and frequencies. so, a blue light would have a different wavelength that a yellow light.
As we know that White colour is a mixture of all colours, that means that a white light is nothing but a mix of rays having wavelenghts of different colours.
When a ray of light is passed through a thick glass, the rays of different wavelenghts bend at different angles.
So, when a white ray is passed through a prism, all the waves of different colours bend at different angles and the output is a "Spectrum" of different colours.

After rain, the rain drops in the air also act like a prism for the sun rays, and the sun rays passing through them gets split into different colours, because of which we see a "Rainbow".
So, this is the link between a spectrum and a rainbow.

Answer 4

Physics.
a.an array of entities, as light waves or particles, ordered in accordance with the magnitudes of a common physical property, as wavelength or mass: often the band of colors produced when sunlight is passed through a prism, comprising red, orange, yellow, green, blue, indigo, and violet.
b.this band or series of colors together with extensions at the ends that are not visible to the eye, but that can be studied by means of photography, heat effects, etc., and that are produced by the dispersion of radiant energy other than ordinary light rays.

Answer 5

The rainbow holds in display all seven colours in an attracive pattern, making the viewer amused and capable of discerning the subtle way of differentiating one from the rest . So when it comes to making a choice between a range of diverse ideas for example ,judging superior human quality a broad array of common features is taken as a base level.

Answer 6

Simply speaking spectrum is the band of 7 colors formed when white light is passed through a prism.
Rainbow is also same band 7 colors formed when white sunlight passes through water drops in acloud

Answer 7

Symbolic. Emotional, spiritual, possible boundries.

Physics. The distribution of a characteristic of a physical system or phenomenon, especially:
The distribution of energy emitted by a radiant source, as by an incandescent body, arranged in order of wavelengths.
The distribution of atomic or subatomic particles in a system, as in a magnetically resolved molecular beam, arranged in order of masses.
A graphic or photographic representation of such a distribution.

A range of values of a quantity or set of related quantities.
A broad sequence or range of related qualities, ideas, or activities: the whole spectrum of 20th-century thought.

Answer 8

Spectrum - Root: spectra - meaning ghost or spirit.
The rainbow appears and disappears. It is insubstantial like a spirit or ghost.

Answer 9

The complete range of colors in the rainbow, from short wavelengths (blue) to long wavelengths (red).

Answer 10

It is borrowed exactly from Latin, noun "spectrum" = appearance or image, related to the verb "spectare" = to see.