what's the most recent security system for biological institutions? I mean, except from devices that scan the retina or voice (it's for an essay). Thanks in advance:)
In the 19th century the lightning rod became a symbol of American ingenuity and a decorative motif. Lightning rods were often embellished with ornamental glass balls (now prized by collectors) that also served to provide visual sign of a lightning strike (when the rod is struck the glass ball shatters and falls off, indicating to the owner which rod got struck and that they should check it and the grounding wire for damage). The ornamental appeal of these glass balls has also been incorporated into weather vanes.
the moon was splitted into half by Muhammad 1500 years ago .some scientist says those craters were so deep that it seems moon has been splited before and joined together thats why the core of moon becoming cooler more rapidly two hindu king saw that from india later they become muslim .search it in
