optical illusion tagged posts

A Solar Illusion: Coronal Loops May Not Be What They Seem

Apparent coronal loops observed by NASA’s Transition Region And Coronal Explorer (TRACE) spacecraft. Credit: NASA/TRACE

New study challenges long-held assumptions about the structure of the sun’s atmosphere. Many coronal loops — ropey strands of plasma that scientists have long thought existed in the Sun’s atmosphere — may actually be optical illusions, according to a new paper that challenges prevailing assumptions of what we know, and don’t know, about the Sun.

The research, led by the National Center for Atmospheric Research (NCAR) and published in The Astrophysical Journal, relied on a cutting-edge, realistic 3D simulation of the solar corona...

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‘The Dress’: Explanation of Optical Illusion of Colors of Striped Dress

In Feb 2015, the photo of a striped dress stirred a worldwide internet debate ; now, neuroscientists have further decoded the phenomenon, demonstrating optical illusion is linked to specific brain activation patterns.

For some, it is black-blue, for others, it is white-gold. In a fMRI study, the neuroplasticity group headed by Prof. T. Schmidt-Wilcke solved the riddle of the illusion. In no time at all, the dress had captured the attention of media and scientists worldwide. Many research institutes have explored the phenomenon from various angles, by analyzing psychophysics or details of the image components...

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