Overview

Rayleigh criterion

Return to overview »

Results | All related links for this item | 1-6 of 6 results for:


Refine by type

Refine by product

 

boundary wave

Overview page. Subjects: Earth Sciences and Geography.

A seismic wave which travels along a boundary between two media of contrasting properties, rather than propagating through the bodies of the media (compare body wave). Where the boundary is...

See overview in Oxford Index

diffraction-limited

Overview page. Subjects: Astronomy and Astrophysics.

A definition of quality in an optical system, indicating that it meets the Rayleigh criterion. This is met when there is no more than a quarter of a wavelength of light between the...

See overview in Oxford Index

Love wave

Overview page. Subjects: Earth Sciences and Geography.

A type of surface wave which occurs when the shear-body-wave velocity in the surface medium is lower than that in the underlying strata. Love waves are characterized by horizontal motion...

See overview in Oxford Index

mirror

Overview page. Subjects: Arts and Humanities.

All done with mirrors an apparent achievement with an element of trickery, alluding to explanations of the art of a conjuror.

Mirror, mirror on the wall, Who is the fairest of them...

See overview in Oxford Index

Richter scale

Overview page. Subjects: Earth Sciences and Geography.

A numerical scale for expressing the magnitude of an earthquake on the basis of seismograph oscillations. The more destructive earthquakes typically have magnitudes between about 5.5 and...

See overview in Oxford Index

Strehl ratio

Overview page. Subjects: Astronomy and Astrophysics.

A measure of the quality of an optical system. It is the ratio of the amount of light actually delivered by an optical system into the Airy disk compared with the theoretical maximum....

See overview in Oxford Index