As a 79 yr old I bought the prism in science museum, London, uk after seeing tv pgm about Newton's famous experiment. At time of writing I've yet to succeed in covering window with blackout plus vital slit/hole though early experiments suggest midday sunlight is best focussing spectrum onto black paper and identifying the 7 colours of the spectrum, not easy since I'm colour-blind. A good buy!
Was this a gift?:
Bottom Line Yes, I would recommend this to a friend
Merchant response: Nosey Ron, this is one of my favorite reviews ever. We're so glad you found the prism and would love updates on the progress you make with your experiment!