Floating Aluminum Coins On Water - Page 2

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Author	Replies: 22 / Views: 7,321	Page: of 2

DVCollector Bedrock of the Community United States 10045 Posts	Posted 01/05/2014 6:00 pm That's a nice fleet of coins! Quote: Aluminum is a highly reactive metal. But aluminum quickly develops a layer of Aluminum oxide when exposed to air, retarding much of continued corrosion. Should be ok in water for a short time--but I would not float an Al coin in mercury. Edited by DVCollector 01/05/2014 6:02 pm Report this Post to the Staff
nalaberong Pillar of the Community Canada 2805 Posts	Posted 01/05/2014 6:04 pm I looked into the chemistry, and I don't think these coins are at too much risk. One or two developed a hard-water stain (because I have really hard water), but that was where I hadn't dried them completely and let the water evaporate. Another rinse (and nothing more) got it off. Report this Post to the Staff
ASLAN TVorlon Pillar of the Community United States 1234 Posts	Posted 01/06/2014 8:35 pm TOO much FUN! ! ! figured the fish don't mind the water 10 Francs, not bad. I even dried them off after... Ohhh I forgot my oriental stuff... I think I'm gonna like this new hobby. Report this Post to the Staff
NJ Bob Pillar of the Community United States 655 Posts	Posted 01/06/2014 9:09 pm Sir Bedevere: There are ways of telling whether she is a witch. Peasant 1: Are there? Oh well, tell us. Sir Bedevere: Tell me. What do you do with witches? Peasant 1: Burn them. Sir Bedevere: And what do you burn, apart from witches? Peasant 1: More witches. Peasant 2: Wood. Sir Bedevere: Good. Now, why do witches burn? Peasant 3: ...because they're made of... wood? Sir Bedevere: Good. So how do you tell whether she is made of wood? Peasant 1: Build a bridge out of her. Sir Bedevere: But can you not also build bridges out of stone? Peasant 1: Oh yeah. Sir Bedevere: Does wood sink in water? Peasant 1: No, no, it floats!... It floats! Throw her into the pond! Sir Bedevere: No, no. What else floats in water? Peasant 1: Bread. Peasant 2: Apples. Peasant 3: Very small rocks. Peasant 1: Cider. Peasant 2: Gravy. Peasant 3: Cherries. Peasant 1: Mud. Peasant 2: Churches. Peasant 3: Lead! Lead! King Arthur: An aluminum coin. Sir Bedevere: ...Exactly. So, logically... Peasant 1: If she weighed the same as an aluminum coin... she's made of wood. Sir Bedevere: And therefore... Peasant 2: ...A witch Report this Post to the Staff
DVCollector Bedrock of the Community United States 10045 Posts	Posted 01/06/2014 10:06 pm Quote: King Arthur: An aluminum coin. Sir Bedevere: ...Exactly. So, logically... Peasant 1: If she weighed the same as an aluminum coin... she's made of wood. Report this Post to the Staff
ASLAN TVorlon Pillar of the Community United States 1234 Posts	Posted 01/06/2014 10:51 pm I've got a popcorn bowl that is about 2 foot across got to wait until the water would not freeze because I'm not doing it inside and frozen water would not count! But I think I can get a few dozen floating on that one. Edit: just found this... Quote: American Elements' AE Bullion™ group mints certified high purity Lead Coins from laboratory certified engineered materials with properties applicable to chemical vapor deposition LEAD COINS, now all I need is a hammer... Edited by ASLAN TVorlon 01/06/2014 11:04 pm Report this Post to the Staff
DVCollector Bedrock of the Community United States 10045 Posts	Posted 01/07/2014 12:58 pm I'm sure a lead coin would float if you made it thin enough. Report this Post to the Staff
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