Sadly not here in the UK but my friends in the US had a great time when they were able to observe a total solar eclipse in August.
I used to teach in Tennessee and one of my friends from over there sent me a couple of sheets of their commemorative stamps.
I am not sure if they are supposed to go on the front of a letter or to be kept. Someone - clever person - has had the great idea to use thermochromic technology to create a stamp that looks black - just like a total eclipse sun but when warmed up changes to an image of the moon.
They are brilliant!
I intend to use one sheet when we go into schools and show how science is working with modern techniques and materials. We have a few interesting things that use thermochromic technology and also a few that use hydrochromic technology - my favourite is our new rainbow umbrella!
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| our thermochromic mug in action |
I love it when science and the everyday overlap. It is great to be able to explain how something works.
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