The term that describes the minimum wavelength below which light is transmitted by a short wavelength pass filter is known as the cut-on wavelength. This is the point on the spectrum where the filter begins to allow light to pass through and typically indicates the transition from blocking shorter wavelengths to allowing longer wavelengths to be transmitted.
For a short wavelength pass filter, the cut-on wavelength represents the boundary above which light can successfully pass through the filter. Below this wavelength, the filter effectively attenuates or blocks the light. Understanding the cut-on wavelength is crucial in applications where specific wavelengths are to be selected or excluded, such as in fluorescence microscopy or flow cytometry, where precise wavelength selection is essential for accurate results and analysis.
The other terms do not accurately capture this concept. For example, peak transmission refers to the maximum transmission value a filter can achieve at a certain wavelength but does not describe a boundary. The cut-off wavelength, while it might sound similar, is more commonly associated with filters that block wavelengths above a certain point rather than passing through shorter wavelengths. Lastly, slope wavelength is not a standard term used in this context and does not describe the filtering process.