Category: Cosmos
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Invisible table…
Making objects invisible is no longer the stuff of fantasy but a fast-evolving science. ‘Invisibility cloaks’ using metamaterials now exist, and are beginning to be used to improve the performance of satellite antennas and sensors. Many of the proposed metamaterials, however, only work at limited wavelength ranges such as microwave frequencies. Now, scientists report a…
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Seeing through your eyes…
Everyday life is full of situations that require us to take others’ perspectives – for example, when showing a book to a child, we intuitively know how to hold it so that they can see it well, even if it is harder to see for ourselves. Or when performing before an audience, we often can’t…
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Self-navigation…
Human eyes are insensitive to polarized light and ultraviolet radiation, but that is not the case for ants, who use it to locate themselves in space. AntBot, a robot designed by CNRS and Aix-Marseille University (AMU) researchers at ISM, copies the desert ants’ exceptional navigation capacities to navigate without the use of GPS. (1) Navigating…
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The third eye… Light… Darkness…
Just like land plants, algae use sunlight as an energy source. Many green algae actively move in the water; they can approach the light or move away from it. For this they use special sensors (photoreceptors) with which they perceive light. The decades-long search for these light sensors led to a first success in 2002:…
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Move… Think… Dance…
Boys with good motor skills are better problem-solvers than their less skillful peers, a study shows. In contrast to previous studies, the researchers found no association between aerobic fitness or overweight and obesity with cognitive function in boys. (1) Moving into the dark forest. Perceiving. But do you move in order to perceive? Or do…
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