I have a biconvex lens. f=45mm. (This is a loupe). I have an object (G). This object is G=64mm broad. When I place this object in a distance of g=42mm in front of the lens I get a virtual picture.
I have calculated the broad of this virtual picture (B) and the virtual distance (b) from the lens of this virtual picture:
So my expectation was: When I make practical test (a practical experiment) I should see the virtual picture in a distance of 0.63 Meter.
So I position my smartphone in a distance of 42mm behind the loupe. Then I watch through the loupe to the smartphone display with my eyes. But I do not see my smartphone now in a distance of 0.63 Meter. It is much nearer.
Question: Can you explain me this contradiction between theory an experiment.