> >Blinds down, light bulbs, diffraction gratings ?
> 
> Yeah, all that, making a lens with a shape under water,
> interference patterns with two motors at varying phases and
> speeds, all real "hands on" illustrative experimentation. Thems
> were the days

Oh yeah, all good fun. Guess you've seen the "That'll Teach 'em"
series ?

I found out a couple of weeks ago that my 4th & 5th form physics
teacher from the UK in the 70s now lives in Hamilton. Small world.
Realising now that he's actually not that much older than me takes
a little getting used to

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