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Astronomers use SA radio telescope to see a cosmic beacon

The MeerKAT radio telescope is actually an array of 64 receptors in the Northern Cape, just a few beats away from the town of Carnarvon.
IEEE

An 81% Bandwidth Parallel-Plate Horn Array Using a Single-to-Double Ridge Waveguide Vertical Interconnection

Abstract: A novel ultrawideband parallel-plate (PP) horn array with an air-filled single-ridge waveguide (SRW) feed network is presented. By designing a wideband double 90°-bend single-to-double (STD) ...
IEEE

Pseudo-Trapezoidal Fast Factorized Backprojection Algorithm for Near-Field Sparse MIMO Array 3-D Imaging

Abstract: In the near-field condition, the wavenumber spectrum exhibits spatial variance, which renders the fast factorized backprojection algorithm (FFBPA) ineffective in improving the imaging ...
Hosted on MSN

How to Tie a Single Uni-Knot and When to Use a Single Uni-Knot

Hello folks, This week we have an instructional video on how to tie a single uni-knot, and when to use a single uni-knot. Tying a single uni-knot is very easy, and we show you step by step on how to ...
Smithsonian Magazine

A Cow Named Veronika Can Scratch Her Back With a Broom. Watch the Video That Scientists Are Calling the First Documented Evidence of Cattle Using Tools

Around ten years ago, an organic farmer and baker in a small Austrian town noticed that his pet cow would use sticks to scratch herself. The cow, named Veronika, also appeared to refine her technique ...