A good smartphone app can help you locate and photograph objects in the night sky. Here are some of the best, tried and ...

Abstract: High frequency (HF) communication, commonly covering frequency range between 3 and 30 MHz, is an important wireless communication paradigm to offer over-the-horizon or even global ...

Porous rubber microbeads suspended in a gel are found to exhibit a negative acoustic index of refraction, which makes these metamaterials promising for underwater acoustic applications. Negative-index ...

Git isn't hard to learn, and when you combine Git and GitHub, you've just made the learning process significantly easier. This two-hour Git and GitHub video tutorial shows you how to get started with ...

A planar composite material images ultraviolet light like a lens, by unwinding its phase. The concept could aid high-resolution nanolithography. Consider a packet of waves moving through a medium: the ...

Light is refracted when it enters a material like water or glass. Depending on the density of the material, light will reduce in speed as it travels through, causing it to change direction. Ray ...

I am hopelessly incapable of explaining the Scarlet Nexus plotline. It has something to do with our brains, the encroaching authoritarianism of personal tech, and the macabre corporations that may or ...

Why marine art: The ocean’s ever-changing light, movement, and wildlife make it an inspiring yet challenging subject for artists to explore. Tools that matter: Using reliable art markers, paints, and ...

For the rendered tutorials, see https://numpy.org/numpy-tutorials/. The goal of this repository is to provide high-quality resources by the NumPy project, both for ...

Abstract: Refraction represents one of the most fundamental operations that may be performed by a metasurface. However, simple phase-gradient metasurface designs suffer from restricted angular ...

A set of Jupyter notebooks for learning Cheminformatics. The links below will open the tutorials on Google Colab. This way you can run the notebooks without having to install software on your computer ...