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>I enjoyed all the technical exhibits, of course. But >one of my favorite non technical memories was of the >snow man in the water exhibit. It had real snow/ice >on it, that you could dig your fingers into - one of >the traditions I had every time I visited the museum. >I was happy to notice that you can actually see the >snowman in the background of one of the photos you >have. > >Another memory is of the sound the multiplier exhibit >in the mathematics section made. It operated by means >of relays - one for each light bulb I think, and the >higher the numbers you multiplied the louder the >"ka-chunk ka-chunk" was, as each row turned on. With >a little practice you could tell approximately what >numbers were being multiplied with your back turned by >the sound. If someone built that exhibit today I do >not think they would use relays!

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