English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Plus monthly

Global: Zendy Tools annual

Global: Zendy Tools monthly

Global: Zendy Free Plan

As predicted by A. Einstein [Ann. Phys. (Leipzig) 17, 891 (1905)], theelectromagnetic wave reflected at a moving mirror is frequency-upshifted andintensified as high as the mirror velocity is close to the speed of light invacuum. However, at this limit the mirror reflectivity vanishes, because thehigher the wave frequency the more transparent matter is. To resolve thisparadox, we analyse the electromagnetic wave propagation in medium where therefractive index modulation moves at the speed of light in vacuum. Although theluminal and superluminal modulations are unconditionally transparent for theincident radiation, they both can reflect. We find the new type of theelectromagnetic wave reflection with the increasing in time frequency insidethe luminal mirror. If the modulation disappears the high frequency radiationis released as a short wavepacket.

On the electromagnetic wave interaction with subluminal, luminal, and superluminal mirrors