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Why are telephone poles called telephone poles?
Telephone poles are just wood poles that hold the telephone cable,the telephone terminal and telephone drops, (wires going to individual houses) in the air and out of the way. Areas that have no poles usually are newer areas, they have the same type wires only they are buried in the ground.
What are environmental disadvantages of telephone wires?
Other than the pollution that comes from making wires, insulation, metal for transformers, and logs for poles, not much.
Did the telephone have a positive impact on the environment?
the telephone did and did not help the environment. It did help, because less trees were being used to write letters. But it didn't help too, because of the telephone wires and poles. They got in the way of animals. The telephone did however, give more jobs to others, and helped many people contact others.
What are the wires for on telephone poles?
Quite variable according to local practice. May include AC power, telephone, and/or TV cable service.
What will happen to the telephone lines if they are fitted tightly from pole to pole?
When a pole shifts with the earth it will pull the wires apart and cause a break somewhere in the line. The poles are meant to suspend the wires in air, not to stretch them... Accurate answer is the lines will break. While breaking is not normally due to poles shifting, that could happen. The reason the wires are slung loosely is because of the expansion and contraction properties of the metal wires. If you look at the lines in the winter, they do not sag much (are tighter) and in the summer the sag is pronounced (looser). If they were strung tightly, they would eventually break during the cold weather.
What is the difference between 0.51MM 0.61MM telephone wires?
.10MM
When were telephone poles invented?
Samuel Morse invented the telephone pole after trying to put the wires underground, which did not work. The United States government gave him $30,000 to figure this idea out.
How are cellphones good for the environment?
Before cell phones all telephone messages ran along wires. Wires and poles were set up all over countries, often using electricity poles. These poles and wires are a visual blot on the landscape, but don't damage the environment too much. Cell phones may mean that we can do without the poles and wires, especially if electricity wires are put underground or if everyone has solar panels good enough to be independent.
Is a glass pane a conductor?
No. Glass is used as the OPPOSITE of a conductor- it is an insulator. This is the reason telephone poles used to use glass objects that looked similar to bells to tie the telephone wires to the poles. For a better conductor of energy, look to metals. Aluminum and copper are excellent conductors, as is gold.
Where are the telephone poles on Big Nate Island?
On either side of the businesses on Main Street. You can climb any pole because they are all connected by springy wires.
Why are electric wires left lose between poles?
To allow for expansion and contraction of the metal wire. In the heat of the summer, the wire will expand (lengthen) and will appear to sag between the poles. In the cold of winter, the wire contracts (shortens) and will tighten up between the poles.
What are poles in electrical control system?
poles are the wires and where they are connected
