light. An optical fiber consists of an extremely thin cylinder of glass, called the core, surrounded by a concentric layer of glass, known as the cladding. There are two fibers per cable—one to transmit and one to receive. The core also can be an optical-quality clear plastic, and the cladding can be made up of gel that reflects signals back into the fiber to reduce signal loss.
orbit: Communication/geostationary orbit, or Geostationary Earth Orbit (GEO) Distance from Earth: 22300 miles aprx Usage: These satellites have revolutionized global communications, television broadcasting and weather forecasting, and have a number of important defense and intelligence applications. Time taken to complete 1 cycle around the Earth: 24 hours aprx
light. An optical fiber consists of an extremely thin cylinder of glass, called the core, surrounded by a concentric layer of glass, known as the cladding. There are two fibers per cable—one to transmit and one to receive. The core also can be an optical-quality clear plastic, and the cladding can be made up of gel that reflects signals back into the fiber to reduce signal loss.
ReplyDeleteQ1 :
DeleteVLF = 3 KHz to 30KHz
VHF = 30 Mhz to 300 Mhz
UHF = 300MHz to 3GHz
EHF =30GHz to 300GHz
SHF =3GHz to 30GHz
Q2:
DeleteGEO:
orbit: Communication/geostationary orbit, or Geostationary Earth Orbit (GEO)
Distance from Earth: 22300 miles aprx
Usage: These satellites have revolutionized global communications, television broadcasting and weather forecasting, and have a number of important defense and intelligence applications.
Time taken to complete 1 cycle around the Earth: 24 hours aprx
cs601
ReplyDelete