The New Encyclopaedia Britannica: A - K.Encyclopaedia Britannica, 1997 |
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Page 229
... tube , a discovery that led to the replacement of the spark transmitter by an electronic tube oscillator that could generate much purer radio waves of relatively stable frequency . By 1910 , radio messages between land stations and ...
... tube , a discovery that led to the replacement of the spark transmitter by an electronic tube oscillator that could generate much purer radio waves of relatively stable frequency . By 1910 , radio messages between land stations and ...
Page 238
... tube . When the beam electrons hit the target , they neutralize the stored positive charge , as in the orthicon , and when equilibrium is reached , fur- ther electrons may not land on that spot . Thereafter , the electrons in the beam ...
... tube . When the beam electrons hit the target , they neutralize the stored positive charge , as in the orthicon , and when equilibrium is reached , fur- ther electrons may not land on that spot . Thereafter , the electrons in the beam ...
Page 243
... tube . The terminals of the colour television system , the camera and picture tube , analyze and synthesize , respectively , the colour quantities present at each point in the scanning pattern . The televi- sion camera in its current ...
... tube . The terminals of the colour television system , the camera and picture tube , analyze and synthesize , respectively , the colour quantities present at each point in the scanning pattern . The televi- sion camera in its current ...
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19th century adult America anemia antibodies antigens Asia behaviour bill birds blood group bodhisattva body Bolivia bone Brazil Brazilian breeding broadcasting bryophytes Buddha Buddhist building called Caprimulgiformes centimetres central centre China clotting colonial colour countries cuckoos disease display early eggs electrons Eocene falconiforms Family feathers feeding feet female forest fossil frequency genera genus gruiform hemoglobin important incubation Indian insects islands known legs light Mahāyāna major male marrow metres molt monks nest normal North oilbird owls pair Pāli parrots passerines pattern pelecaniforms penguins percent perch period Piciformes pigeons plasma platelets plumage political population produced programs protein radio red cells region river São Paulo scanning sexes short signal South species sporangium structure Suborder surface tail television Theravada tion tissue toes tradition trees tropical tube usually Vajrayāna varies wings woodpeckers World young