How is $-6$ dB pressure amplitude is the same as FWHM?

1. What is the formula for FWHM?
2. What does the FWHM tell you?
3. What are the units of FWHM?
4. What is FWHM stand for?

What is the formula for FWHM?

FWHM = √(b²/2 – 2ac) / |a|.

What does the FWHM tell you?

Full Width at Half Maximum, a mathematical method for defining a peak. This method is used to generate a 'peaks' that can be used to calculate the resolution of the mass spectrometer that generated the spectrum being analysed.

What are the units of FWHM?

The FWHM is expressed either in wavelength unit or in speed unit when the objective is to measure expansion or disk speeds (if FWHM is in unit of wavelength, the width in km/sec is given by c . FWHM /l, with c is the speed of the light = 3.10⁵ km/s).

What is FWHM stand for?

The full width at half maximum (FWHM) is the width of a line shape at half of its maximum amplitude, as shown below: A closely related quantity is the half width at half maximum (HWHM) or the Resolving Resolution and it is half of the FWHM.