A recently discovered set of original Nikola Tesla drawings reveal a map to multiplication that contains all numbers in a simple to use system. The drawings were discovered at an antique shop in central Phoenix Arizona by local artist, Abe Zucca.
How to Make Your Own Cell Phone Jammer. Cell phone jammers are installed in no disturbance zones such as schools or colleges. But how exactly does this instrument jam cell phones? These jamming instruments prevent mobiles from receiving.