Interesting Wikipedia articles?
Discussion
http://en.wikipedia.org/wiki/North_Korea%27s_cult_...
Absolutely nuts and a little frightening. These people know how to brainwash....
Absolutely nuts and a little frightening. These people know how to brainwash....
CIA recruitment? Banking cryptography test? Nobody knows...
Cicada 3301
https://en.wikipedia.org/wiki/Cicada_3301
Cicada 3301
https://en.wikipedia.org/wiki/Cicada_3301
First leader of Turkmenistan after independence from Russia - Makes that tubby chubster from North Korea look sane.
http://en.wikipedia.org/wiki/Saparmurat_Niyazov
http://en.wikipedia.org/wiki/Saparmurat_Niyazov
http://en.wikipedia.org/wiki/Amethyst_Incident
Interesting battle between the PLA and the Royal Navy during the Chinese Civil War. Don't know anything about any of this, so it was quite an interesting read.
Interesting battle between the PLA and the Royal Navy during the Chinese Civil War. Don't know anything about any of this, so it was quite an interesting read.
http://en.wikipedia.org/wiki/New_Ash_Green
This is one of a very few private sector 'New Towns' (although it is self-styled a village too).
Once had the misfortune to call in - like a cut price Crawley on a miniature scale. On the plus side you can walk to Brands Hatch in about ten minutes.
This is one of a very few private sector 'New Towns' (although it is self-styled a village too).
Once had the misfortune to call in - like a cut price Crawley on a miniature scale. On the plus side you can walk to Brands Hatch in about ten minutes.
Wing Commander said:
http://en.wikipedia.org/wiki/Amethyst_Incident
Interesting battle between the PLA and the Royal Navy during the Chinese Civil War. Don't know anything about any of this, so it was quite an interesting read.
Very interesting.Interesting battle between the PLA and the Royal Navy during the Chinese Civil War. Don't know anything about any of this, so it was quite an interesting read.
And linking from that is The story of Simon the ships cat
http://en.wikipedia.org/wiki/Simon_(cat)
There's been a lot of stuff in the news about Auschwitz this week, with it being the 70th anniversary of the liberation.
Witold Pilecki was a Polish army officer who volunteered to enter Auschwitz as a prisoner and then spent three years imprisoned in the camp, during which he organised a resistance movement and sent out intelligence about the activities of the Nazis and the numbers of people being killed in the camp.
In 1943 he escaped from Auschwitz and returned to Warsaw, where he became a central figure in Polish resistance and in 1944 he fought in the Warsaw uprising.
He worked in intelligence for the Free Polish government-in-exile after the war by remaining in Warsaw and reporting on the activities of the communist govenment. Arrested in 1947, he was tried as a spy and hanged in 1948.
Postumously (and only recently) he has been awarded Poland's highest military honour and promoted to Colonel.
The words "brave" and "heroic" are banded about frequently, but are entirely appropriate for Witold Pilecki.
Witold Pilecki was a Polish army officer who volunteered to enter Auschwitz as a prisoner and then spent three years imprisoned in the camp, during which he organised a resistance movement and sent out intelligence about the activities of the Nazis and the numbers of people being killed in the camp.
In 1943 he escaped from Auschwitz and returned to Warsaw, where he became a central figure in Polish resistance and in 1944 he fought in the Warsaw uprising.
He worked in intelligence for the Free Polish government-in-exile after the war by remaining in Warsaw and reporting on the activities of the communist govenment. Arrested in 1947, he was tried as a spy and hanged in 1948.
Postumously (and only recently) he has been awarded Poland's highest military honour and promoted to Colonel.
The words "brave" and "heroic" are banded about frequently, but are entirely appropriate for Witold Pilecki.
http://en.wikipedia.org/wiki/Gauge_blockhttp://en....
Used these at Uni - they are perfectly machine blocks for measuring or acting as a reference for length - basically slide two small perfectly flat blocks and then try to pull them apart - the force holding the small blocks together is unreal, and the reason they have such a strong bond is apparently is still unknown...
Used these at Uni - they are perfectly machine blocks for measuring or acting as a reference for length - basically slide two small perfectly flat blocks and then try to pull them apart - the force holding the small blocks together is unreal, and the reason they have such a strong bond is apparently is still unknown...
Brother D said:
http://en.wikipedia.org/wiki/Gauge_blockhttp://en....
Used these at Uni - they are perfectly machine blocks for measuring or acting as a reference for length - basically slide two small perfectly flat blocks and then try to pull them apart - the force holding the small blocks together is unreal, and the reason they have such a strong bond is apparently is still unknown...
I made gauge blocks by hand as an Artificer in the RN - nothing magical about them, just perfectly flat and no imperfections on the surface to break the effective vacuum between the two surfaces. Used these at Uni - they are perfectly machine blocks for measuring or acting as a reference for length - basically slide two small perfectly flat blocks and then try to pull them apart - the force holding the small blocks together is unreal, and the reason they have such a strong bond is apparently is still unknown...
E24man said:
I made gauge blocks by hand as an Artificer in the RN - nothing magical about them, just perfectly flat and no imperfections on the surface to break the effective vacuum between the two surfaces.
Isn't a vacuum some space with nothing in it? If there's not any space Shirley it's not a vacuum?(Didn't do any physics past the age of 13 - feel free to laugh and/or educate!)
E24man said:
I made gauge blocks by hand as an Artificer in the RN - nothing magical about them, just perfectly flat and no imperfections on the surface to break the effective vacuum between the two surfaces.
Edited by Brother D on Saturday 7th February 23:50
Brother D said:
E24man said:
I made gauge blocks by hand as an Artificer in the RN - nothing magical about them, just perfectly flat and no imperfections on the surface to break the effective vacuum between the two surfaces.
So atmospheric pressure is about 14 pounds per Sq inch... yet you wring 2 blocks together (of surface area maybe less than an inch) the force required to separate them is about 60+ lbs so no. It's not just air pressure.
ks or not?All good guesses and it seems the boffins who wrote the article don't know for sure but as far as I can remember (it was the thick end of 30 years ago when I was a baby apprentice) it certainly feels like you're breaking a vacuum when you part them. If you just place them together there is no sensation of magnetism and there is no chance they will stick together if you push them against each other. But slide them together (as per the wringing instructions) and they hold together, and depending on the quality of the finish the harder they are to part with a direct pull perpendicular to the 'joined' surfaces.
You can get a similar effect with less smooth surfaces with a small amount of oil but the test for the apprentice pieces was for them to join without any lubricant at all. I think I gave all my apprentice pieces to my mum who forgot my advice to keep them oiled and they reverted to rusty lumps of mild steel.
You can get a similar effect with less smooth surfaces with a small amount of oil but the test for the apprentice pieces was for them to join without any lubricant at all. I think I gave all my apprentice pieces to my mum who forgot my advice to keep them oiled and they reverted to rusty lumps of mild steel.
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