Look at this optical illusion picture. Three happy girls stand together holding hands. They are wearing white headcovers, ...

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

The FOS-860A optical receiver emulates a typical wide-band optical node used in communications networks. The unit measures optical power in mW or dBm within the 1,310- and 1,550-nm windows and in ...