Boston telegraph operator, (to Portland telegraph operator): "Please cut off your battery entirely from the line for fifteen minutes."
Portland operator: "Will do so. It is now disconnected."
Boston: "Mine is disconnected, and we are working with the auroral current. How do you receive my writing?"
Portland: "Better than with our batteries on. Current comes and goes gradually."
Boston: "My current is very strong at times, and we can work better without the batteries, as the Aurora seems to neutralize and augment our batteries alternately, making current too strong at times for our relay magnets. Suppose we work without batteries while we are affected by this trouble."
Portland: "Very well. Shall I go ahead with business?"
Boston: "Yes. Go ahead." — Ars Technica covers the story of the Great Auroral Storm of 1859, and the awe it inspired.
posted by Toekneesan
on May 3, 2012 -
Magnetic core memory reborn
is a project by Ben North and Oliver Nash implementing 32 bits of core memory using literal tiny core magnets on the Arduino
board. The history and operation of core memory is explained and diagrammed. The Arduino has over 4,250 times this amount of memory standard.
posted by odinsdream
on May 12, 2011 -