rationalskepticism.org

Evolving wrote:

LucidFlight wrote:Those last two — on my phone, nothing; on the big monitor... woah!

Unfortunately I haven't got a big monitor. Just a laptop and a phone,and the only one that moves is post 8, and that only on the laptop.

Ambient lighting seems to have an effect. The coloured images only seem to move in a well-lit room. Also, increased viewing distance seems to help. Otherwise,