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telescopemore about telescope

telescope


  6  definitions  found 
 
  From  Webster's  Revised  Unabridged  Dictionary  (1913)  [web1913]: 
 
  Telescope  \Tel"e*scope\  (t[e^]l"[-e]*sk[=o]p),  a. 
  Capable  of  being  extended  or  compacted,  like  a  telescope,  by 
  the  sliding  of  joints  or  parts  one  within  the  other 
  telescopic;  as  a  telescope  bag;  telescope  table,  etc 
 
  From  Webster's  Revised  Unabridged  Dictionary  (1913)  [web1913]: 
 
  Telescope  \Tel"e*scope\,  n.  [Gr.  ?  viewing  afar,  farseeing;  ? 
  far  far  off  +  ?  a  watcher,  akin  to  ?  to  view:  cf  F. 
  t['e]lescope.  See  {Telegraph},  and  {-scope}.] 
  An  optical  instrument  used  in  viewing  distant  objects,  as  the 
  heavenly  bodies. 
 
  Note:  A  telescope  assists  the  eye  chiefly  in  two  ways;  first 
  by  enlarging  the  visual  angle  under  which  a  distant 
  object  is  seen,  and  thus  magnifying  that  object;  and 
  secondly,  by  collecting,  and  conveying  to  the  eye,  a 
  larger  beam  of  light  than  would  enter  the  naked  organ, 
  thus  rendering  objects  distinct  and  visible  which  would 
  otherwise  be  indistinct  and  or  invisible.  Its  essential 
  parts  are  the  object  glass,  or  concave  mirror,  which 
  collects  the  beam  of  light,  and  forms  an  image  of  the 
  object,  and  the  eyeglass,  which  is  a  microscope,  by 
  which  the  image  is  magnified. 
 
  {Achromatic  telescope}.  See  under  {Achromatic}. 
 
  {Aplanatic  telescope},  a  telescope  having  an  aplanatic 
  eyepiece. 
 
  {Astronomical  telescope},  a  telescope  which  has  a  simple 
  eyepiece  so  constructed  or  used  as  not  to  reverse  the 
  image  formed  by  the  object  glass,  and  consequently 
  exhibits  objects  inverted,  which  is  not  a  hindrance  in 
  astronomical  observations. 
 
  {Cassegrainian  telescope},  a  reflecting  telescope  invented  by 
  Cassegrain  which  differs  from  the  Gregorian  only  in 
  having  the  secondary  speculum  convex  instead  of  concave, 
  and  placed  nearer  the  large  speculum.  The  Cassegrainian 
  represents  objects  inverted;  the  Gregorian,  in  their 
  natural  position.  The  Melbourne  telescope  (see  Illust. 
  under  {Reflecting  telescope},  below)  is  a  Cassegrainian 
  telescope. 
 
  {Dialytic  telescope}.  See  under  {Dialytic}. 
 
  {Equatorial  telescope}.  See  the  Note  under  {Equatorial}. 
 
  {Galilean  telescope},  a  refracting  telescope  in  which  the 
  eyeglass  is  a  concave  instead  of  a  convex  lens,  as  in  the 
  common  opera  glass.  This  was  the  construction  originally 
  adopted  by  Galileo,  the  inventor  of  the  instrument.  It 
  exhibits  the  objects  erect,  that  is  in  their  natural 
  positions. 
 
  {Gregorian  telescope},  a  form  of  reflecting  telescope.  See 
  under  {Gregorian}. 
 
  {Herschelian  telescope},  a  reflecting  telescope  of  the  form 
  invented  by  Sir  William  Herschel,  in  which  only  one 
  speculum  is  employed,  by  means  of  which  an  image  of  the 
  object  is  formed  near  one  side  of  the  open  end  of  the 
  tube,  and  to  this  the  eyeglass  is  applied  directly. 
 
  {Newtonian  telescope},  a  form  of  reflecting  telescope.  See 
  under  {Newtonian}. 
 
  {Photographic  telescope},  a  telescope  specially  constructed 
  to  make  photographs  of  the  heavenly  bodies. 
 
  {Prism  telescope}.  See  {Teinoscope}. 
 
  {Reflecting  telescope},  a  telescope  in  which  the  image  is 
  formed  by  a  speculum  or  mirror  (or  usually  by  two 
  speculums,  a  large  one  at  the  lower  end  of  the  telescope, 
  and  the  smaller  one  near  the  open  end)  instead  of  an 
  object  glass.  See  {Gregorian,  Cassegrainian  Herschelian, 
  &  Newtonian,  telescopes},  above. 
 
  {Refracting  telescope},  a  telescope  in  which  the  image  is 
  formed  by  refraction  through  an  object  glass. 
 
  {Telescope  carp}  (Zo["o]l.),  the  telescope  fish. 
 
  {Telescope  fish}  (Zo["o]l.),  a  monstrous  variety  of  the 
  goldfish  having  very  protuberant  eyes. 
 
  {Telescope  fly}  (Zo["o]l.),  any  two-winged  fly  of  the  genus 
  {Diopsis},  native  of  Africa  and  Asia.  The  telescope  flies 
  are  remarkable  for  having  the  eyes  raised  on  very  long 
  stalks. 
 
  {Telescope  shell}  (Zo["o]l.),  an  elongated  gastropod 
  ({Cerithium  telescopium})  having  numerous  flattened 
  whorls. 
 
  {Telescope  sight}  (Firearms),  a  slender  telescope  attached  to 
  the  barrel,  having  cross  wires  in  the  eyepiece  and  used  as 
  a  sight. 
 
  {Terrestrial  telescope},  a  telescope  whose  eyepiece  has  one 
  or  two  lenses  more  than  the  astronomical,  for  the  purpose 
  of  inverting  the  image,  and  exhibiting  objects  erect. 
 
  From  Webster's  Revised  Unabridged  Dictionary  (1913)  [web1913]: 
 
  Telescope  \Tel"e*scope\,  a.  [imp.  &  p.  p.  {Telescoped};  p.  pr  & 
  vb  n.  {Telescoping}.] 
  To  slide  or  pass  one  within  another,  after  the  manner  of  the 
  sections  of  a  small  telescope  or  spyglass;  to  come  into 
  collision,  as  railway  cars,  in  such  a  manner  that  one  runs 
  into  another.  [Recent] 
 
  From  Webster's  Revised  Unabridged  Dictionary  (1913)  [web1913]: 
 
  Telescope  \Tel"e*scope\,  v.  t. 
  To  cause  to  come  into  collision,  so  as  to  telescope.  [Recent] 
 
  From  WordNet  r  1.6  [wn]: 
 
  telescope 
  n  :  an  instrument  that  magnifies  the  image  of  distant  objects 
  [syn:  {scope}] 
  v  1:  crush  together,  as  of  cars  in  a  collision 
  2:  make  smaller  or  shorter;  "the  novel  was  telescoped  into  a 
  short  play" 
 
  From  THE  DEVIL'S  DICTIONARY  ((C)1911  Released  April  15  1993)  [devils]: 
 
  TELESCOPE,  n.  A  device  having  a  relation  to  the  eye  similar  to  that 
  of  the  telephone  to  the  ear,  enabling  distant  objects  to  plague  us 
  with  a  multitude  of  needless  details.  Luckily  it  is  unprovided  with  a 
  bell  summoning  us  to  the  sacrifice. 
 
 




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