Gosh! I love the word metamerism, 2

[@LiYang-do8vo]

Nice work, John, and well done.

[@conchan9474]

thank you so much!

[@JeremyRutman]

I am gratified to see society's woeful under- and misuse of the word metamerism, and nearly complete ignorance of the RHEM scale rectified to some degree in this video.

[@Eugensson]

When I was a kid a have noticed a strange effect. It was late night and i was walking past the community center of my town. The building had a one line red dot-matrix LED display showing time and temperature. I have noticed it is "flickering", but then i realised the flickering disapperas when the display is observed only with one eye. More than that, with one eye the LEDs looked more "orange" than with the other eye. Is this also metamerism? I have similar effect when i see the "blacklight" lamps in the clubs, with one eye they appear black to me, while with the other eye they appear as very dark violet.