The phrase "spectral shift" refers to the change in the color or wavelength of light. It means that the light has moved towards the red or blue end of the spectrum, indicating a change in the object's motion or location. Full definition
By choosing a very stringent readout system, we demonstrate here that a large spectral shift in both excitation and emission (Ex and Em) could be achieved with a FP using exclusively selective pressure applied on the DT40 evolution platform. (journals.plos.org)
The second floor of «Storage Memory» takes a more spectral shift, with the artist engaging intimate spaces to produce tableaux of darkness. (frieze.com)
The colors range from black to vibrant, bold pigments with the use of fluorescence, pearlescent finishes and interference paint, each providing spectral shifts, a shimmer like the sun reflecting off sand and rocks, as well as optical effects. (davidrichardgallery.com)