What is spectrum of light?
What is spectrum of light?
In the 17th century, the word spectrum was introduced into optics by Isaac Newton, 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 or power as a function of frequency or wavelength, also known as a spectral density plot.
The term spectrum was expanded to apply to other waves, such as sound waves that could also be measured as a function of frequency, frequency spectrum and power spectrum of a signal. The term now applies to any signal that can be measured or decomposed along a continuous variable such as energy in electron spectroscopy or mass-to-charge ratio in mass spectrometry. Spectrum is also used to refer to a graphical representation of the signal as a function of the dependent variable.
Electromagnetic spectrum refers to the full range of all frequencies of electromagnetic radiation[4] and also to the characteristic distribution of electromagnetic radiation emitted or absorbed by that particular object.
In the 17th century, the word spectrum was introduced into optics by Isaac Newton, 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 or power as a function of frequency or wavelength, also known as a spectral density plot.
The term spectrum was expanded to apply to other waves, such as sound waves that could also be measured as a function of frequency, frequency spectrum and power spectrum of a signal. The term now applies to any signal that can be measured or decomposed along a continuous variable such as energy in electron spectroscopy or mass-to-charge ratio in mass spectrometry. Spectrum is also used to refer to a graphical representation of the signal as a function of the dependent variable.
Electromagnetic spectrum refers to the full range of all frequencies of electromagnetic radiation[4] and also to the characteristic distribution of electromagnetic radiation emitted or absorbed by that particular object.
