English(fiber optics) Flashcards
a few years ago how did international phone signals were sent?
via satellite
what is now used to carry communications?
fiber optics
what is fiber optics
a thin glass fiber that can transmit signal at the speed of light
is fiber optic a new invention ?
no its not a new invention
where was fiber optics used in the past?
they were used in photophone by alexander graham bell who had earlier invented the telephone
2nd time that fiber optics become imp and why?
in 20th century they became imp in medicine to look inside the human body
first time that fiber optics were used?
in photophone
the next BIG step in the usage of fiber optics (the 3rd usage)was what and when ?
came in 1960,70s where scientists IMPROVED the technology in order to use it over long distance
NASA regarded fiber optics as what
NASA regarded fiber optics as one of the TOP SECRETS used in the APPOLO SPACE CRAFT ( the space craft that landed the first on moon )
when did apollo first land on moon ?
in 1969
when was the internet invented
1970 (before the late 1970 there was no internet)
when did the first modern digital age begin
with the first website 1991
the internet took of globally
after 2000
fiber optic cables can….
reach around the world under ground and under water
with fiber optics the speed of internet can….
increase far in the future
who invented the first website and why and when
Tim Berners Lee, did so to share the RESEARCH information’s among the other scientists more efficiently around the world in 1991
www is short cut of
world wide web
he gave it to the world …….
for free
when was the telephone invented by who
1875 and he produced many other ideas…..
the idea of fiber optics was fist used in……in ….by…
photophone in 1880
now there is no escape from it(……)
internet
internet supports education through……
schoolNet
SchoolNet provides……
information and interactive sites for schools to share
scoolNet was firs made in
canada
