galvanometer

20/2/11 - meatpoophysics
  • Slept at 3am. Woke up at 7am - My sleep felt like a blink.
  • Got to work at 8am, finished at 5:30pm - I was pretty surprised at how much energy I had. I barely felt exhausted and wasn’t in a bitchy mood. I was quite jovial actually and customers had no effect on me.
  • A friend ask if I was working out because I was getting “bigger” = big self-esteem but bigger ego LOL.
  • Came home and napped.
  • Ate dinner then did a beautiful diarrhea. It seriously looked like gravy.

Now onto my physics assignment. Fuck yeah motors+generators!

Michael Faraday’s induction ring, used in experiments that led to the discovery of electromagnetic induction on August 29th, 1831. Faraday wrapped two wires around opposite sides of an iron ring, inserting one into a galvanometer and the other into a battery. He observed “waves of electricity” resulting from the change in magnetic flux.

Telegraph Siphon Recorder by Muirhead & Co. Ltd. from the Ballingskelligs cable station in the Irish Republic. This station was opened in 1873 only nine years after the epic voyage of the Great Eastern which laid the first successful submarine cable across the Atlantic. The Siphon Recorder was invented by Lord Kelvin in 1867 for use with the new trans-Atlantic telegraph cable laid successfully at the third attempt in 1865. Due to the length of the cable- 4,000 + miles - there was an immediate requirement for an instrument of unparalleled sensitivity and Lord Kelvin devised the Syphon Recorder to satisfy this need. As sensitive as the mirror galvanometer it had the advantage of also creating a permanent record of the received signal. The recorder translated the incoming signal into a series of squiggles on a paper ribbon. These were then interpreted by a telegraph clerk. Syphon recorders were highly complex and expensive and were only used on long distances where the usual equipment was insufficient, in consequence they were never common and most surviving examples are in museums.