Abstract In the present communication we report measurement of small displacement reflecting surface (plane mirror) using wedge plate lateral shearing interferometry. With help simple mathematical analysis relation between specimen and difference phase is undertaken. Fourier based fringe technique used for determination phase. Theoretical experimental investigations are carried out to check sen...

BACKGROUND Mirror therapy is used to improve motor function after stroke. During mirror therapy, a mirror is placed in the patient's midsagittal plane, thus reflecting movements of the non-paretic side as if it were the affected side. OBJECTIVES To summarise the effectiveness of mirror therapy for improving motor function, activities of daily living, pain and visuospatial neglect in patients ...

Abstract The in situ and real-time measurement of curvature changes optically reflecting surfaces is a key element to better control bottom-up fabrication processes the semiconductor industry, but also follow or adjust mirror deformations during use for space optics industries. Despite progresses made last two decades thanks laser deflectometry-based techniques, community lacks an instrument, e...

Objects grasped by an agent have a value not only for the acting agent, but also for an individual observing the grasping act. The value that the observer attributes to the object that is grasped can be pivotal for selecting a possible behavioral response. Mirror neurons in area F5 of the monkey premotor cortex have been suggested to play a crucial role in the understanding of action goals. How...

Accelerating relativistic mirrors have long been recognized as viable settings where the physics mimic those of black hole Hawking radiation. In 2017, Chen and Mourou proposed a novel method to realize such system by traversing an ultra-intense laser through plasma target with decreasing density. An international AnaBHEL (Analog Black Hole Evaporation via Lasers) collaboration was formed object...

Since the launch of the Hubble Space Telescope there has been widespread popular interest in astronomical imaging. A further series of events, most notably the recent Deep Impact mission have served to fuel further interest in this. In parallel with this there have been a number of events and trends that have increased interest in astronomical photography outside of professional astronomy. Adva...

We study the second-harmonic generation in left-handed metamaterials with a quadratic nonlinear response. We demonstrate a novel type of the exact phase matching between the backward propagating wave of the fundamental frequency and the forward propagating wave of the second harmonics. We show that this novel parametric process can convert a surface of the left-handed metamaterial into an effec...