Roaming and Handoff

Cellphone

Roaming and Handoff are technical words in telecommunication world.Now a days these are very popular these words both in communication field and normal life.So knowlede with this simple technical word is very important. * What is the roaming ? When Continue reading

Electromagnetic field

  Electromagnetic fieldĀ  An electromagnetic field (EMF or EM field) is a physical field produced by moving electrically charged objects. It affects the behavior of charged objects in the vicinity of the field. The electromagnetic field extends indefinitely throughout space Continue reading