the infrared region of the electromagnetic spectrum; electromagnetic wave frequencies below the visible range

(electronics) a graph of frequency response with signal amplitude or gain plotted against frequency

(electronics) a graph of frequency response with signal amplitude or gain plotted against frequency

the ratio of the number of observations in a statistical category to the total number of observations

the number of occurrences within a given time period

the number of observations in a given statistical category

the infrared region of the electromagnetic spectrum; electromagnetic wave frequencies below the visible range

electromagnetic radiation with wavelengths longer than visible light but shorter than radio waves