Discussion about math, puzzles, games and fun. Useful symbols: ÷ × ½ √ ∞ ≠ ≤ ≥ ≈ ⇒ ± ∈ Δ θ ∴ ∑ ∫ • π ƒ -¹ ² ³ °
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That is a great website ... what a collection.
These optical illusions are great!
That is one of the best optical illusions ever!
I get what MathsIsFun gets. Nothing at first, then a bright white dot where there should be nothing. It also has a hint of green for no apparent reason. Did anyone else get that or are my eyes weird?
I get a phantom bright dot ... the eye over-compensates for the missing dot I think.
What are you meant to do?
Cool optical illusion !
You were on the right track, but instead of dividing, you should multiply.
Robin Reed reported that the coldest day on record for his town was five times colder than