Notices tagged with history, page 6

Picked up some lovely money from pre-nazi Germany, the Weimar Republic as it was called. It was all very cheap and not a good investment or anything. I picked it up because if the lovely examples of calligraphy.

Most of these are from 1920's around the same period in germany.

#calligraphy #Numismatics #money #history

🎓 Dr. Freemo :jpf: 🇳🇱 (freemo@qoto.org)'s status on Monday, 15-Jul-2019 06:34:14 UTC

🎓 Dr. Freemo :jpf: 🇳🇱

My favorite alloy is copper-gold alloy, here is why:

Copper is dissolved easily by acid where gold i not. Therefore if you rub any such alloy with acid you can eat away the copper leaving just the gold. This creates a similar effect as gold plating where a thin layer of pure gold is on the outside and the whole object looks like pure gold.

Of course gold is soft so even though the whole alloyed object is pretty strong thanks to the copper the thin outer layer is soft and wears away over time easily. When it goes from gold back to a rose-gold copper color just rub it down with a little more acid and it turns gold again.

Its much cheaper than pure gold but looks just as nice and is easily cleaned up. Its really win win in many ways.

Interesting note, the romans used to use this for their armor. Since they would clean it off with acetic acid from vinegar it looks like pure gold and thus was impressive on the battlefield to see. The gol shine would wear off fast from battle but was easily restored in the next cleaning.

#science #chemistry #metallurgy #history #romans

Edgecontrol (edgecontrol@quitter.es)'s status on Sunday, 14-Jul-2019 14:05:11 UTC

Edgecontrol

Nadie iba vestido como un skater, que antes que todo buscaba comodidad para realizar sus movimientos con la tabla. Ahora no diferencias un skater de un wannabe, con su sudadera Trasher Skateboarding Magazine y siempre sin tabla.
#StreetWear #History #NoPosers

ximoberna (ximoberna@mastodont.cat)'s status on Monday, 10-Jun-2019 08:31:04 UTC

ximoberna

Ángel Viñas: "El Suprem ha d'explicar en quina llei es basa per dir que Franco era cap d'estat" - https://youtu.be/rhwQHuaDC6I via @tv3cat #sPAIN #feixisme #franquisme #history #justícia

NewsStream (newsstream@quitter.im)'s status on Wednesday, 29-May-2019 00:00:28 UTC

NewsStream

Over 10,000 BIKERS take to streets of #California for their 20th annual memorial day ride #Epic #History #Veterans https://quitter.im/attachment/2490761

Galip (Inactive) (galipesc@bobinas.p4g.club)'s status on Friday, 17-May-2019 22:44:32 UTC

Galip (Inactive)

Esto pensaba un gringo de Puerto Rico (ni lo podian decir o escribir bien): "Porto Rico is one of our own back doors—and the back doors of our homes are the places where the germs come in. These fair-haired young sailors of ours come into these tropical ports. Thousands of these Porto Rican laborers have been imported into the states recently." Laura Briggs - Reproducing the empire #empire #usa #assasins #crazyness #politics #history #puertorico

Federation Bot (federationbot@mastodon.host)'s status on Wednesday, 08-May-2019 03:15:30 UTC

Federation Bot

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