Recorder  Shunt. — A  shunt  of  low  resist-
ance placed  across  the  terminals  of  the
coil  of  a  siphon-recorder  during  sending.
Recorder  Signals.— Signals  received  on  a
siphon  recorder  by  the  projection  of  ink
upon  a  moving  strip  of  paper  from  a  small
glass  siphon  connected  with  the  receiving
coil.
Recorder  Slip.— The  strip  of  paper  re-
cording, or  prepared  for  recording,  siphon-
recorder  signals.
Recorder  Switch.— The  switch  employed
in  connection  with  a  siphon  recorder  for
changing  from  sending  to  receiving  con-
nections.
Recorder  -  Vibrator.  —  An     electronic-


Rec.]


900


[Red.
chanical  vibrator  for  forcing  an  inter-
mittent flow  of  ink  from  the  siphon  of  a
recorder  on  to  a  band  of  paper  moving
beneath  it.
Recording  Compass.— A  compass  so  ar-
ranged as  to  record  the  directions  of
the  needle,  and  to  sound  an  alarm  in  case
the  course  of  the  vessel  deviates  any  pre-
determined number  of  degrees.
Recording  Drum. — A  cylindrical  drum
covered  by  a  sheet  or  strip  of  paper  on
which  a  chronographic  or  other  record,  is
made.
Recording  Meter.— Any  form  of  electric
meter  that  records  its  indications.
Recording  Voltmeter.  —  A  voltmeter
whose  indications  are  permanently  re-
corded.
Recording  Wattmeter. — (1)  A  recording
form  of  wattmeter.  (2)  A  dial  watt-hour
or  kilowatt-hour  meter.
"Recovery"  of  Condenser. — The  con-
dition of  a  condenser  whose  dielectric  has
regained  its  neutral  condition  after  having
been  strained  by  a  charge.
Rectal  Electrode. — An  electrode  suita-
ble for  the  treatment  of  the  rectum.
Rectangular  Curve. — A  curve  whose  out-
line approximates  or  conforms  to  a  rec-
tangular shape.
Rectangular  Type  of  Periodically  Al-
ternating Electromotive  Force. — An
electromotive  force  whose  variations  of
strength  are  represented  by  a  curve  of
rectangular  outline.
