Mind you two grand seems quite steep. I'd have been temped to try it on the cheap with a load of hydrogen made in the science lab, a party pack of 500 balloons from Aldi and half a dozen confiscated smartphones for data and photos.
Probably why I'm not allowed to teach any more...
2 comments:
Not allowed? Eh? Wossis then?
Ray.
Friend of mine, while a senior classics master at a South London school, built a full-size copy of a Roman ballista which hurled a missile some hundreds of yards, but that was back in the 1970s.
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