English: In quantum physics, one can measure a given property of a given system in many different measurement bases. The purpose of the figure is to illustrate how measurements in different bases can give different results with different probabilities, without requiring the viewer to know anything about quantum physics, such as spin and measurement projectors. The green color is an equal mixture of yellow and blue. We can use this relation to take blue, red and yellow as basis vectors and green as a "quantum superposition" of blue and yellow. From this point of view, the first measurement apparatus measures in basis (blue, red, yellow) and can give, with equal probabilities, two possible results: blue or yellow. The second apparatus measures in a different basis given by colors (orange, green, violet). Since in this case the green color coincides with one of the basis vectors, the second apparatus always reports "green" as the measurement result.