Spirographs, invented in 1962, are toys that create geometric patterns using gears. These designs are used in art and similar patterns can be found in nature.

Symmetry can be found in various forms, including reflectional and rotational symmetry, and plays a significant role in object recognition, alignment, and reconstruction. Recent research has ...

They have published their research in the Physical Review Letters paper "Enabling all-to-circular polarization up-conversion by nonlinear chiral metasurfaces with rotational symmetry." The team's ...

Generation of circularly polarized nonlinear signals from chiral metasurfaces with rotational symmetry under arbitrarily polarized excitation. (Image: SUTD) The team’s proposed metasurface exhibits ...

Our opening quote contended that Venn diagrams are overrated. Even those who agree must admit that they have a curious allure. Take the sets of interesting topics in logic, in geometry and in ...

Rock and dust samples brought back to Earth from the asteroid Bennu contain organic matter and a variety of minerals crucial to the emergence of life ...

At the end of the 14 th century there were two types of mill in the Netherlands: the post mill, which was a ground winder, ...

By leveraging the unique properties of chirality and rotational symmetry, this breakthrough eliminates the need for bulky optical setups, enabling more compact and efficient optical devices. This ...

They say beauty is in the eye of the beholder, but it helps if the object of your gaze is symmetrical. Studies show humans associate symmetry with attractivenes ...

Emmy Noether showed that fundamental physical laws are just a consequence of simple symmetries. A century later, her insights ...

Abstract: Recently appeared OAM-based interferometers have high requirements on the quality of vortex beam and system calibration, otherwise, the rotational symmetry interferogram will be destroyed. A ...

Strengthen your core and improve posture with these 7 expert-approved exercises. Follow this 30-day plan for visible results ...