Modern Meaning in The Physical Sciences
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 or power as a function of frequency or wavelength, also known as a spectral density.
The term spectrum was expanded to apply to other waves, such as sound waves that could also be measured as a function of frequency. 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 as a function of the dependent variable.
Read more about this topic: Spectrum
Famous quotes containing the words modern, meaning, physical and/or sciences:
“Not “Seeing is Believing” you ninny, but “Believing is Seeing.” For modern art has become completely literary: the paintings and other works exist only to illustrate the text.”
—Tom Wolfe (b. 1931)
“Even in my own writings I cannot always recover the meaning of my former ideas; I know not what I meant to say, and often get into a regular heat, correcting and putting a new sense into it, having lost the first and better one. I do nothing but come and go. My judgement does not always forge straight ahead; it strays and wanders.”
—Michel de Montaigne (1533–1592)
“The vast material displacements the machine has made in our physical environment are perhaps in the long run less important than its spiritual contributions to our culture.”
—Lewis Mumford (1895–1990)
“The best thing about the sciences is their philosophical ingredient, like life for an organic body. If one dephilosophizes the sciences, what remains left? Earth, air, and water.”
—Novalis [Friedrich Von Hardenberg] (1772–1801)