Hi,
I visited the company that I turned the resin exhibits for and have found out the reason for the work. They are to be part of a large exhibit of ‘Periodic Table of the Elements’. They have been mounted in a large ball race to they can be turned. The brown liquid in one which I thought was oil is apparently Bromine which along with Mercury are the only elements which are liquid at normal temperature. The turning will allow this fact to be shown. It looks like a large project with all of the 118 known elements being shown along with their details. There is also a very large touch screen television which shows what the elements are used for and lights up the exhibits when elements are selected, looks very complicated, I hope they don’t discover any further elements before it is finished!
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Regards Tony.