Share to: /   The Chinese make light Work of Payment: The Invention of Paper Money   / Around 650 AD, the emperor of China began to issue paper value tokens for general use.
Answer: No. Mobile phones do not give off sub-atomic (ionizing)  radiation.    Answer: Yes. Mobile phones emit microwave (millimeter to  centimeter range) electro-mag â¦ netic radiation, mostly at frequencies  from 800 to 1800 MHz (1.8 GHz).This is below infrared.nswer: No. Mobile phones do not give off sub-atomic (ionizing)  radiation.    Answer: Yes. Mobile phones emit microwave (millimeter to  centimeter range) electro-mag â¦ netic radiation, mostly at frequencies  from 800 to 1800 MHz (1.8 GHz). This is below infrared.
People can improve their cell phone reception by using a cell phone signal booster, which is designed to get rid of dead zones. To do this, cell phone users should understand the types of signal boosters available.he first is a directional antenna that is pointed in the direction most likely to receive a cell phone signal from a carrierâs cell tower. The antenna is typically connected to a lightning fuse, particularly if the antenna is stationed outside a building, via a coaxial cable.