Rainbow Symphony Spectroscoop - dubbele as 13.500 lijnen/mm, 6'x60'/15x150 cm, handmatige focus, 2' oculair, statiefbevestiging, Unisex, alle leeftijden, opvoeders, wetenschappers, hobbyisten,

This product is very useful and it is helping me to demonstrate some physics experiment about diffraction of light .Even we can use this sheet for windows to produce rainbow colors in a room during day time.

Très bon produit, très bon service, vendeur professionnel, fiable et sympathique! Recommandation maximale!

I bought this purely for my elementary science class so we could make rainbow chocolate. (We've been discussing light, so this seemed like a great last-day-of-science treat.) It worked really well! I just melted the flat side of the Dove chocolates on a frying pan and then pressed the chocolates down firmly onto the sheet. It shows up best on dark chocolate, but you can see it on other kinds as well. (Sunlight shows off the rainbows best.)You can wash and reuse the film but you have to dry it (or you might get water residue that will mess up future chocolate rainbows). Also, be very careful not to crinkle it.The sheet comes in a cardboard tube, which I thought was great until someone threw it away, thinking it was trash. Big sad. If you buy it, put a label on the tube so that doesn't happen to you!The kids loved just looking through the sheet at each other and the windows, etc. Definitely a good investment!

I got the idea from 'Instructables' to make rainbow chocolates and to use the paper as a base for 3D printing the results where really nice.Also fast international postage, which helped just before Christmas :-)

eine tolle Folie