|
|
|
|
|
|
|
|
|
|
|
Home Display size: 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13 |
|
|
|
|
|
|
|
|
Lead-free fishing weights.
Melted down and allowed to cool in the standard graphite crucible used for several metal samples. Environmental concerns have prompted a switch from lead to tin for fishing sinkers.Purchased at Walmart in April 2002. Source originally suggested by Ed Pegg.
Source: Walmart
Contributor: Theodore Gray
Acquired: 24 April, 2002
Price: $14/10 bags of weights
Size: 1.25"
Purity: >95%
|
|
|
|
|
|
|
Crying bars.
The "Tin Cry" is an oft-described, seldom-heard phenomenon. If, it is claimed, you bend a bar of tin, it will "cry" as the crystal structure is disrupted. When NPR's Science Friday program asked to interview me about the Periodic Table Table, I decided it was time for the world to hear the tin cry live on the radio.
I had to make these bars in a hurry, before the kids woke up in the morning and needed to be fed, so I just poured out some silica sand and drew a line in it with my finger, then poured the molten tin into the groove, forming these crude bars. Then I bent them by hand and using a pair of pliers while holding them up to a microphone connected to a laptop.
Later I was able to make a super-high fidelity recording in the "dead end" studio at WGBH Boston, using the finest high sensitivity microphones available. My host family when I attended the Ig Nobel Prize ceremony, Jane and Miles, are both sound engineers at WGBH, and they kindly set up a recording session to capture this important element sound. That's the sound currently associated with the element: The first one I did wasn't nearly as good.
I'll let you be the judge of whether they "cry" or not: Personally I'd call it more of a crackle-crackle-crackle sound. In any case, click the speaker icon to hear it. I would be curious to hear from anyone who has created a better crying sound from tin.
Source: Walmart
Contributor: Theodore Gray
Acquired: 16 July, 2002
Price: $14/10 bags of weights
Size: 3"
Purity: >95%
|
|
|
|
|
|
|
|
|
|
Sample from the Everest Element Set.
Up until the early 1990's a company in Russia sold a periodic table collection with element samples. At some point their American distributor sold off the remaining stock to a man who is now selling them on eBay. The samples (excepted gasses) weight about 0.25 grams each, and the whole set comes in a very nice wooden box with a printed periodic table in the lid.
To learn more about the set you can visit my page about element collecting for a general description and information about how to buy one, or you can see photographs of all the samples from the set displayed on my website in a periodic table layout or with bigger pictures in numerical order.
Source: Rob Accurso
Contributor: Rob Accurso
Acquired: 7 February, 2003
Price: Donated
Size: 0.2"
Purity: >99%
|
|
|
|
|
|