17:37 Could the parallax problem be solved by assuming that the stars are not distributed in a three-dimensional space, but instead on a celestial sphere? Putting all the stars on a fixed sphere would make the parallax effects less visible, as the stars in a given portion of the sky woul...
17:37 Could the parallax problem be solved by assuming that the stars are not distributed in a three-dimensional space, but instead on a celestial sphere? Putting all the stars on a fixed sphere would make the parallax effects less visible, as the stars in a given portion of the sky woul...
these methods may be used to establish discrimination thresholds. The advantage of measuring thresholds is that there is mature and well-validated theory — the theory of signal detection[3]— that enables inferences about the perceptual representation of the stimuli in a manner insulated from effects...
Parallax Error • When using an optical instrument —both the image and cross hairs can be focused- if either is imprecisely focused, the cross hairs will appear to move with respect to the object focused, if one moves one's head horizontally in front of the eyepiece. ...
17:37 Could the parallax problem be solved by assuming that the stars are not distributed in a three-dimensional space, but instead on a celestial sphere? Putting all the stars on a fixed sphere would make the parallax effects less visible, as the stars in a given portion of the sky woul...
So the quantity is basically measuring the multiplicity of the grains. It turns out that after a suitable rescaling, the arrangement of grains looks locally like an arrangement of tubes. If one is lucky, these tubes will look like a Kakeya (or sub-Kakeya) configuration, for instance with ...
Putting all the stars on a fixed sphere would make the parallax effects less visible, as the stars in a given portion of the sky would now all move together at the same apparent velocity – but there would still be visible large-scale distortions in the shape of the constellations because ...