From: tnp@invalid.invalid   
      
   On 26/03/2024 18:16, Ahem A Rivet's Shot wrote:   
   > On Tue, 26 Mar 2024 17:33:50 +0000   
   > Jim H  wrote:   
   >   
   >> Assuming the "oil" you're talking about is kerosene/heating fuel, the   
   >> speed of sound is 1330 m/sec so 0.5cm takes 3.76 micro-sec.   
   >   
   > 	I would have thought it's measuring the distance to the surface of   
   > the oil from above the oil so it would be the speed of sound in air that   
   > matters 300m/s.   
   >   
   Correct, Mrs Shot.   
   Anyway it's died within 30 minutes of going back on 'short echo'...   
   So its definitely sensitive to that in some way.   
      
   I'll add more debug code tomorrow   
      
   --   
   When plunder becomes a way of life for a group of men in a society, over   
   the course of time they create for themselves a legal system that   
   authorizes it and a moral code that glorifies it.   
      
     Frédéric Bastiat   
      
   --- SoupGate-Win32 v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)