Are you ready to test your observation skills? In today’s puzzle series, you can see an inverted 49-number series. With this ...

The middle months of every year for me are occupied with optics testing. I’m well into my second decade of captaining the annual Outdoor Life optics test, but the content that I deliver to readers in ...

I’m still working through content from this summer’s Outdoor Life optics test, in which I dragooned volunteer testers to evaluate 45 rifle scopes, 17 binoculars, eight spotting scopes, and 23 thermal ...

A challenging optical illusion featuring an egg tray claims only 5% of people can correctly count all 30 eggs. This test requires viewers to perceive the 3D structure beyond the visible surface, with ...

A test standard from the International Electrotechnical Commission (IEC) has been adopted by the Telecommunications Industry Association (TIA) as an American national standard. TIA has adopted ...

JDSU’s c-Series of compact photonic test tools for the development and manufacture of fiber-optic connectors and passive components provides an entry-level alternative for engineers who require simple ...