[Tony Messina] had been fascinated with bat’s echolocation since he was a kid. After he retired, he decided to act on this fascination and built a simple bat detector. The simple bat detector uses ...

Belarus has showcased a crude heat-decoy device meant to confuse incoming missiles, but questions remain about whether this improvised “bucket” can actually fool modern infrared-guided weapons on the ...

While metal detecting is a fun hobby for many, some enthusiasts strike it lucky, unearthing treasures worth life-changing sums of money with their trusty detectors. From historical hoards to massive ...

Silver Exchange Traded Funds (ETFs) are one of the easiest and popular ways of investing in silver. A silver ETF tracks the price of physical silver. In India, the silver ETFs are offered by several ...

A team of physicists has discovered a surprisingly simple way to build nuclear clocks using tiny amounts of rare thorium. By electroplating thorium onto steel, they achieved the same results as years ...

For certain high-security devices, such as card readers, ATMs, and hardware security modules, normal physical security isn’t ...