Abstract: We propose a compact wideband phased array with 2-D wide-angle scanning and low radar-cross Section (RCS) performance. The antenna elements comprise two pairs of split-ring (SR) particles ...
Abstract: Clustered-object environments challenge robotic grasp planning and implementation mainly for two reasons: (i) the limited inter-object clearance leaves insufficient space for conventional ...
Videos in this batch show unidentified aerial phenomena but offer few clues to existence of alien life Sign up for the Breaking News US newsletter email The Pentagon on Friday released a second ...
From a single gold coin's journey through the centuries, to an ingenious screw that changed engineering, the extraordinary stories behind 100 of the most significant and intriguing artefacts in US ...
In 1876, Americans filled an iron safe with objects meant to tell their story — to be opened a century later. Roman Mars and historian Jill Lepore trace its long wait, from Reconstruction to Watergate ...
A popular UFO-reporting app has been making waves after reportedly recording tens of thousands of mysterious underwater objects up and down the United States’ coastlines, raising eyebrows and leaving ...
Featuring iconic and everyday items, including a Revolutionary War gunboat and a first-generation iPod, “In Pursuit of Life, Liberty & Happiness” is open now at the museum Emily Barske Wood | ...
Almost half the stuff in orbit around Earth can be classified as space junk, and the problem is only going to get worse as launches and orbital infrastructure increase. Using data from the U.S. Space ...
When it comes to phalluses, a lot of people think it’s the size that matters. Others think it’s how the phallus is used. But any archaeologist or historian worth their salt knows the truth, it’s the ...
Some results have been hidden because they may be inaccessible to you
Show inaccessible results