Balmer jump

Balmer jump

[′bȯl·mər ‚jəmp]
(spectroscopy)
The sudden decrease in the intensity of the continuous spectrum of hydrogen at the Balmer limit. Also known as Balmer discontinuity.
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References in periodicals archive ?
Also of interest is the so-called Balmer jump at a near-ultraviolet wavelength of 364.
One potential complication, cautions Napoleao: the sensitivity of most commercially available CCD cameras declines steeply with wavelength at the ultraviolet end of the spectrum, and some CCDs may be unable to straddle the Balmer jump.
Emission Lines to Watch Balmer jump * -- 350-380 nm doubly ionized neon Ne III 386.