﻿Disks 
  and 
  Rings 
  of 
  Metal. 
  271 
  

  

  Experiments 
  on 
  ring 
  of 
  tinned 
  Iron. 
  

  

  Diameter 
  of 
  axis 
  of 
  ring 
  5*308 
  

  

  Circumference 
  " 
  " 
  16 
  675 
  

  

  Temp, 
  of 
  water 
  16°. 
  

  

  W 
  

  

  2 
  

  

  •817 
  

   •838 
  

  

  min. 
  

  

  

  •848 
  

  

  max. 
  

  

  

  •830 
  

  

  

  

  •841 
  

  

  

  

  •820 
  

  

  

  2 
  

  

  •832: 
  

  

  = 
  mean. 
  

  

  W 
  2-832 
  

  

  - 
  — 
  ■, 
  = 
  — 
  =-16982 
  = 
  //» 
  

  

  circ' 
  16-675 
  

  

  * 
  w—P 
  ,o 
  -16982— 
  '00784 
  _ 
  . 
  _ 
  ' 
  

   A= 
  --=-cos 
  2|°= 
  *-*999048=*08107 
  

  

  Experiments 
  on 
  ring 
  of 
  Copper. 
  

  

  Diameter 
  of 
  axis 
  of 
  ring 
  5*46 
  

  

  Circumference 
  " 
  " 
  ._ 
  1 
  7'153 
  

  

  Temp, 
  of 
  water 
  16°. 
  

  

  W 
  

  

  2-920 
  

   •914 
  

  

  •913 
  min. 
  

   •928 
  max. 
  

   •928 
  

   •926 
  

  

  2*9215 
  = 
  mean. 
  

  

  W 
  _ 
  2'9215_ 
  > 
  _ 
  

  

  circ' 
  - 
  17*153 
  

  

  , 
  w-p 
  1Q 
  -17035 
  — 
  -00784 
  

   A 
  = 
  ±--*-cos 
  2h 
  — 
  r--999048 
  = 
  *08132 
  

  

  2^2 
  

  

  