spectroscopy spectrometry spectroscopic analysis spectrum analysis spectrographic analysis | the use of spectroscopes to analyze spectra |
visible speech | spectrogram of speech, speech displayed spectrographically |
spectrum | a broad range of related objects or values or qualities or ideas or activities |
visible speech | a phonetic alphabet invented by Melville Bell in the th century |
spectrum line | an isolated component of a spectrum formed by radiation at a uniform frequency |
horizon apparent horizon visible horizon sensible horizon skyline | the line at which the sky and Earth appear to meet |
spectrum | an ordered array of the components of an emission or wave |
absorption spectrum | the spectrum of electromagnetic radiation that has passed through a medium that absorbed radiation of certain wavelengths |
action spectrum | the efficiency with which electromagnetic radiation produces a photochemical reaction plotted as a function of the wavelength of the radiation |
atomic spectrum | (physics) a spectrum of radiation caused by electron transitions within an atom, the series of spectrum lines is characteristic of the element |
electromagnetic spectrum | the entire frequency range of electromagnetic waves |
emission spectrum | spectrum of electromagnetic radiation emitted by a self-luminous source |
infrared spectrum | the spectrum of infrared radiation |
light visible light visible radiation | (physics) electromagnetic radiation that can produce a visual sensation, the light was filtered through a soft glass window |
line spectrum | a spectrum in which energy is concentrated at particular wavelengths, produced by excited atoms and ions as they fall back to a lower energy level |
mass spectrum | a distribution of ions as shown by a mass spectrograph or a mass spectrometer |
microwave spectrum | the part of the electromagnetic spectrum corresponding to microwaves |
radio spectrum radio-frequency spectrum | the entire spectrum of electromagnetic frequencies used for communications, includes frequencies used for radio and radar and television |
sound spectrum acoustic spectrum | the distribution of energy as a function of frequency for a particular sound source |
speech spectrum | the average sound spectrum for the human voice |
ultraviolet spectrum | the spectrum of ultraviolet radiation |
visible spectrum color spectrum | the distribution of colors produced when light is dispersed by a prism |
balance of trade trade balance visible balance trade gap | the difference in value over a period of time of a country's imports and exports of merchandise, a nation's balance of trade is favorable when its exports exceed its imports |
visible(a) | present and easily available, the cash on hand is adequate for current needs, emergency police were on hand in case of trouble, a visible supply, visible resources |
visible | obvious to the eye, a visible change of expression |
visible seeable | capable of being seen, or open to easy view, a visible object, visible stars, mountains visible in the distance, a visible change of expression, visible files |