1
Why are cell phones called cell phones
They are called that because each service area is called a cell.
What does mobility mean?
Cell phones can move with you and people can make or take calls almost anywhere
What are some things that might be possible for cell phones in the future?
Work better in train stations, small as a button, faster.
How many phone numbers do the landlines in your home have?
One number no matter how many phones.
Cell
Section of the area covered by wireless phones
What was the problem with the cell phones Bell Labs introduced for police cars?
They were big and could not be carried easily
Which type of phone works better in power outages?
Landlines
What percent of the world uses technology/cell phones?
80%
Michael Faraday
Communication
Sharing thoughts feelings or information
Who was the first person to contribute to the development of cell phones?
Michael Faraday
Why are landlines better in power outages?
They do not need to be charged
How did Dr. Mahlon send signals between mountain tops?
Kites
In every room.
Remotely
Located far away from a distant place
When was the first cell phone sold to the public?
1983
What can cause problems for cell phone calls
Things that get in the way like weather, trees, hills, and large buildings.
How many people were using cell phones in 1987
over one million
What year did police cars get cell phones?
1947
Fiber Optics
Flexible thin glass fibers used to send information using light.
Why were the digital wireless systems we use today createc?
Because there were too many users and the airwaves were too crowded.
Is voice quality on landlines better than cell phones? Why or why not?
It is usually better because landlines don't depend on wireless signal strength.
What kin of add ons do cell phones have compared to landlines
Cameras, internet, texting
How do cell phone's add to your saftey?
They all you to call anywhere if there is an emergency
Transmission
Process of sending signals