How the cell phones changed our lives?
Cell phones have also enabled families to keep in closer touch with each other. Cell phones have certainly made our lives much more convenient. Cell phones have also changed the way that people interact with each other. When we call someone, we are actually calling the person and not a place.
Why is magnetic shielding important?
Many consumer electronics and medical diagnostic instruments generate large local magnetic fields. Here the goal of shielding is to protect other circuits and conductors within the instruments from unwanted induced currents, and to allow the normal functioning of other, nearby electronic equipment.
How does a cell phone work simple explanation?
In the most basic form, a cell phone is essentially a two-way radio, consisting of a radio transmitter and a radio receiver. When you chat with your friend on your cell phone, your phone converts your voice into an electrical signal, which is then transmitted via radio waves to the nearest cell tower.
Why phone is important in our life?
Cell phones are the perfect way to stay connected with others and provide the user with a sense of security. In the event of emergency, having a cell phone can allow help to reach you quickly and could possibly save lives. However, the importance of cell phones goes way beyond personal safety.
How can we detect radiation?
Radiation cannot be detected by human senses. A variety of instruments are available for detecting and measuring radiation. The most common type of radiation detector is a Geiger-Mueller (GM) tube, also called a Geiger counter.
How does radiation kill cells?
At high doses, radiation therapy kills cancer cells or slows their growth by damaging their DNA. Cancer cells whose DNA is damaged beyond repair stop dividing or die. When the damaged cells die, they are broken down and removed by the body. Radiation therapy does not kill cancer cells right away.
What is the purpose of using shielding techniques?
The main purpose of effective EMC Shielding is to prevent electromagnetic interference (EMI) or radio frequency interference (RFI) from impacting sensitive electronics. This is achieved by using a metallic screen to absorb the electromagnetic interference that is being transmitted through the air.
What materials can block radio waves?
Thin amounts of plastic wrap, wax paper, cotton and rubber are not likely to interfere with radio waves. However, aluminum foil, and other electrically conductive metals such as copper, can reflect and absorb the radio waves and consequently interferes with their transmission.
What are the pros of cell phones?
10 advantages of cell phones:
- Portability.
- Easy to connect to the web.
- Save more time and money.
- Emergency help.
- Easy to contact your parents and children.
- GPS guide.
- Tracking function.
- Easy to take pictures and shoot videos.