This meant a degaussed ship with a magnetic "hot spot" would still set off the mine. One of them, USS Deperm (ADG-10), was named after the procedure.Īfter the war, the capabilities of the magnetic fuzes were greatly improved, by detecting not the field itself, but changes in it. ĭuring World War II, the United States Navy commissioned a specialized class of degaussing ships that were capable of performing this function. To aid the Dunkirk evacuation, the British "wiped" 400 ships in four days. Smaller ships continued to use wiping through the war. Nevertheless, the bias did wear off eventually, and ships had to be degaussed on a schedule. From then on captains were instructed to change direction as often as possible to avoid this problem. A more serious problem was later realized: as a ship travels through Earth's magnetic field, it will slowly pick up that field, counteracting the effects of the degaussing. It was originally thought that the pounding of the sea and the ship's engines would slowly randomize this field, but in testing, this was found not to be a real problem. This induced the proper field into the ship in the form of a slight bias. This procedure dragged a large electrical cable along the side of the ship with a pulse of about 2000 amperes flowing through it. Installing such special equipment was, however, far too expensive and difficult to service all ships that would need it, so the navy developed an alternative called wiping, which Goodeve also devised, and which is now also called deperming. British ships, notably cruisers and battleships, were well protected by about 1943. In addition to being able to bias the ship continually, coiling also allowed the bias field to be reversed in the southern hemisphere, where the mines were set to detect "S-pole down" fields.
#Logitech options no devices detected install
The original method of degaussing was to install electromagnetic coils into the ships, known as coiling. Since the Germans used the gauss as the unit of the strength of the magnetic field in their mines' triggers (not yet a standard measure), Goodeve referred to the various processes to counter the mines as "degaussing". Admiralty scientists, including Goodeve, developed a number of systems to induce a small "N-pole up" field into the ship to offset this effect, meaning that the net field was the same as the background. The mines detected the increase in the magnetic field when the steel in a ship concentrated the Earth's magnetic field over it.
Goodeve, Royal Canadian Naval Volunteer Reserve, during World War II while trying to counter the German magnetic naval mines that were wreaking havoc on the British fleet. The term was first used by then-Commander Charles F. And I’m sure it’ll happen again.Control panel of the MES-device ( "Magnetischer Eigenschutz" German: Magnetic self-protection) in a German submarine There we have it! Working Logitech Options again, it only took an hour out of my day that I’ll never get back. I don’t know why this isn’t part of the preferences backup. In case you forget where that is, click your mouse device (NOT the keyboard), then flick the switch. That did the trick! All I had to setup again was Flow, the magic that means I can move my mouse from one system to another. restore preferences from a previous cloud backup (it’s part of Options).manually uninstall Logitech Options (removing all settings).There was no way to change it now, so I tried this approach:
I was sure I had disabled that option, but with so many computers, perhaps I didn’t. Thankfully I found a post by Jarod Yong that suggested this may be related to sending analytics data for Options.
Nothing doing: after the upgrade, I still got the grey screen and nothing else.
#Logitech options no devices detected upgrade
I thought perhaps I’ll upgrade the software to the latest version, even though I thought I had done that recently. When I tried starting Options manually, only a grey screen came up, but the app didn’t load. Options hadn’t automatically loaded on startup. It’s become an important part of my workflow, and as such it’s super annoying when it stops working. I’ve been relying on Logitech Options to move my mouse on both computers on my desk.
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