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An absorption spectrum shows dark lines at specific wavelengths where light has been absorbed by a substance. A continuous spectrum shows all colors/wavelengths with no gaps, like the rainbow. The main difference is that the absorption spectrum has specific dark lines while the continuous spectrum is smooth and uninterrupted.
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Why in an absorption spectrum the back ground is bright and the lines are dark?
Because it is an absorption spectrum. An absorption spectrum begins with a source of pure white light. This hits a prism which spreads it out into a spectrum and the result shows on a screen as a bright band of colours. If you put this into a glass case and seal it to the outside world, nothing changes. Now if blow a gas into the tank, the atoms in the gas absorb different wavelengths (colours) of light. The result you see is a normal spectrum of colours, but with one or more dark lines across it. This is because the atoms in the gas through which the white light is shining are absorbing some or all of various colours in the spectrum. What those colours are is absolutely characteristic and definitive of that particular gas. This is a very powerful technique for identifying elements which are present only in trace amounts. An interesting light on this is that the element Helium was first discovered not on earth, but on the sun by some dark lines in the sun's spectrum which did not belong to any known element.
Why is the spectrum from daylight or fluorescent light called continuous?
The spectrum from daylight or fluorescent light is called continuous because it contains a smooth and uninterrupted range of colors across the visible light spectrum. This means that all wavelengths within the visible light range are present without gaps or missing portions, unlike the discrete lines seen in some other types of lighting spectra.
What is the difference between a continuous spectrum an a line spectrum?
Dispersion, the separation of visible light into a spectrum, may be accomplished by means of a prism or a diffraction grating. Each different wavelength or frequency of visible light corresponds to a different color, so that the spectrum appears as a band of colors ranging from violet at the short-wavelength (high-frequency) end of the spectrum through indigo, blue, green, yellow, and orange, to red at the long-wavelength (low-frequency) end of the spectrum. In addition to visible light, other types of electromagnetic radiation may be spread into a spectrum according to frequency or wavelength. The spectrum formed from white light contains all colors, or frequencies, and is known as a continuous spectrum. Continuous spectra are produced by all incandescent solids and liquids and by gases under high pressure. A gas under low pressure does not produce a continuous spectrum but instead produces a line spectrum, i.e., one composed of individual lines at specific frequencies characteristic of the gas, rather than a continuous band of all frequencies. If the gas is made incandescent by heat or an electric discharge, the resulting spectrum is a bright-line, or emission, spectrum, consisting of a series of bright lines against a dark background. A dark-line, or absorption, spectrum is the reverse of a bright-line spectrum; it is produced when white light containing all frequencies passes through a gas not hot enough to be incandescent. It consists of a series of dark lines superimposed on a continuous spectrum, each line corresponding to a frequency where a bright line would appear if the gas were incandescent. The Fraunhofer lines appearing in the spectrum of the sun are an example of a dark-line spectrum; they are caused by the absorption of certain frequencies of light by the cooler, outer layers of the solar atmosphere. Line spectra of either type are useful in chemical analysis, since they reveal the presence of particular elements. The instrument used for studying line spectra is the spectroscope.
Why dark line appears in absorption spectrum?
Dark lines in an absorption spectrum are caused by material existing between the source of light and the observation point. This material can absorb light from the source at specific energies corresponding to the excitation energies of the molecules, atoms, or ions making up the material.
Why do some objects appear brown?
Objects appear brown when they absorb most colors from the visible spectrum and reflect a combination of red, orange, and yellow wavelengths, which together appear as brown to our eyes. This absorption and reflection pattern is determined by the object's material composition and surface structure.
What type of spectrum do we see from the sun?
We see a continuous spectrum from the sun, which contains all wavelengths of light. This is because the sun emits light across a wide range of wavelengths due to its high temperature.
What Is The Absorption Spectrum Of boron?
The absorption spectrum of boron typically shows strong absorption in the ultraviolet region, with some absorption in the visible spectrum as well. Boron's absorption spectrum is characterized by a series of sharp peaks due to transitions between energy levels in its atomic structure.
Why does in line spectrum there is spaces between spectrum whereas in continuous it is not so?
In case of continuous spectrum we have all sorts of frequencies. This ensures that probability of transfer of electrons at various energy levels are equally available. But in case of line spectrum it is some how a characteristic which is restrained with the transfer of electrons in specified energy levels.
Why in an absorption spectrum the back ground is bright and the lines are dark?
Because it is an absorption spectrum. An absorption spectrum begins with a source of pure white light. This hits a prism which spreads it out into a spectrum and the result shows on a screen as a bright band of colours. If you put this into a glass case and seal it to the outside world, nothing changes. Now if blow a gas into the tank, the atoms in the gas absorb different wavelengths (colours) of light. The result you see is a normal spectrum of colours, but with one or more dark lines across it. This is because the atoms in the gas through which the white light is shining are absorbing some or all of various colours in the spectrum. What those colours are is absolutely characteristic and definitive of that particular gas. This is a very powerful technique for identifying elements which are present only in trace amounts. An interesting light on this is that the element Helium was first discovered not on earth, but on the sun by some dark lines in the sun's spectrum which did not belong to any known element.
Does a star's spectrum show all of its elements?
The spectrum shows:the "blackbody radiation - a continuous spectrum that is related to the temperature of the surface of the starlines that are related to levels of energy that electrons jump, releasing photons, and"dark" lines which show energy levels of electrons belonging to elements in the atmosphere or the intervening space which block some radiation
How do the spectra of the sun and the green leaf compare?
The spectra of the sun and a green leaf are different. The sun's spectrum contains a wide range of colors, while a green leaf's spectrum is more focused on green wavelengths due to chlorophyll absorption.
Figure 10.1 shows the absorption spectrum for chlorophyll a and the action spectrum for photosynthesis Why are they different?
The absorption spectrum shows which wave lengths are absorbed in each individual type of chlorophyll. The action spectrum shows which wavelengths of light are most effective for photosynthesis.
Why is the spectrum from daylight or fluorescent light called continuous?
The spectrum from daylight or fluorescent light is called continuous because it contains a smooth and uninterrupted range of colors across the visible light spectrum. This means that all wavelengths within the visible light range are present without gaps or missing portions, unlike the discrete lines seen in some other types of lighting spectra.
What kind of graph shows comparisons?
Every graph shows comparisons of some kind or another.
If the electron in a hydrogen atom obeyed classical mechanics instead of quantum mechanics would it emit a continuous spectrum or a line spectrum?
In some text books on physical chemistry it is stated that if an electron followed the classical laws of mechanics it would continue to emit energy in the form of electromagnetic radiation until it fell to the nucleus. It is not sensible to consider the spectrum of emitted electromagnetic radiation because its wavelength is a function of the Schrodinger equation under the influence of the Hamilton operator. So my only have desecrate values. A classical picture of the atom would not obey the Schrodinger equation so there is no way of predicting the way it would emit energy.
What are some comparisons of ancient Egypt and mesopotamia?
some comparisons are they both have metal productes and cloth plus pottery they both also did trade and farming
Is manufacturing a discrete or continuous?
Some manufacturing is discrete, some continuous.
