A vehicle that could dive underwater … and stay there? During the Revolutionary War, an American colonist built an experimental submersible vehicle that George Washington called “an effort of genius.” ...

Eight level Sierpinski Triangle fractal (anno 1916), endless triangles in triangles to infinity. Each triangle is divided into four. The middle one is left empty and the remaining three are divided ...

Abstract: In this paper, a compact open ended microstrip-line-fed antenna with Sierpinski Knopp wide-slot for triple band operation is designed and discussed. The proposed antenna consists of a 50Ω ...

Rockalina the turtle has had a transformative year. When wildlife rescuers first laid eyes on her back in February, they weren’t sure she’d last the night. After nearly 50 years living on a kitchen ...