Optimal cross-sectional shapes of whispering-gallery ring resonators with prescribed emission wavelength and resonance mode are generated using topology optimization based on the finite element method ...

The ring of amethyst by Rollins, Alice Wellington, 1847-1897 Publication date 1878 Publisher New York : G. P. Putnam's Sons Collection cdl; americana Contributor University of California Libraries ...

Witness the creation of a custom gold ring for men featuring a stunning amethyst stone surrounded by diamonds and wood fossil stones. This design blends elegance and nature, using high-quality 18K ...

Front to Back Ratio Bandwidth Enhancement of Resonance Based Reflector Antenna by Using a Ring-Shape Director and Its Time-Domain Analysis An uni-directional antenna designed by resonance-based ...

Turning an old coin into a luxurious ring is a unique and rewarding craft. This incredible video demonstrates how everyday materials, such as coins, can be transformed into elegant jewelry pieces ...