Plasmonics
... A. The black disc blocks the light coming from the left and reflects it back, leaving a shadow towards the right (shown in light green + yellow). B. The surrounding ring of cloaking material guides the light around the disc. Reflection and shadow are avoided, thereby avoiding any trace of the object ...
... A. The black disc blocks the light coming from the left and reflects it back, leaving a shadow towards the right (shown in light green + yellow). B. The surrounding ring of cloaking material guides the light around the disc. Reflection and shadow are avoided, thereby avoiding any trace of the object ...
Lecture 20
... Most metamaterials with negative refractive index have been made for microwaves (below left). Such devices are interesting for making an airplane invisible to radar (wavelength 3 cm) . ...
... Most metamaterials with negative refractive index have been made for microwaves (below left). Such devices are interesting for making an airplane invisible to radar (wavelength 3 cm) . ...
Physics of music
... Resonant phenomena occur with all types of vibrations or waves. Resonant systems can be used to generate vibrations of a specific frequency, or pick out specific frequencies from a vibration containing many frequencies. Resonance occurs widely in nature, and is exploited in many man-made devices. It ...
... Resonant phenomena occur with all types of vibrations or waves. Resonant systems can be used to generate vibrations of a specific frequency, or pick out specific frequencies from a vibration containing many frequencies. Resonance occurs widely in nature, and is exploited in many man-made devices. It ...
