Rayleigh limit
Physics
noun
1The upper limit of a quarter of a wavelength placed on the difference between the optical paths of the longest and shortest rays of those going to form an image in order that the definition shall be close to the ideal.
2The limit on resolving power arising from the Rayleigh criterion.
Origin
1920s; earliest use found in Transactions Optical Society.
- undertaking
- undertenancy
- undertenant
- under the auspices of
- under the banner of
- under the baton of
- under the cosh
- under the counter (or table)
- under the gun
- under (the) hatches
- under the heel of
- under the impression that
- under the influence
- under the microscope
- under the name (of)
- under the open sky
- under the pump
- under the rose
- under the skin
- under the sod
- under the sun
- under the table
- under the weather
- under the wire
- underthings