Abstract: Reconfigurable Intelligent Surface (RIS) technology enables programmable wireless propagation through passive beamforming. However, large-scale implementations often incur excessive control ...

Send a note to Doug Wintemute, Kara Coleman Fields and our other editors. We read every email. By submitting this form, you agree to allow us to collect, store, and potentially publish your provided ...

Subscribe to our newsletter for the latest sci-tech news updates. Expanding shells of gas and dust that have been ejected from a star during the process of its evolution from a main sequence (MS) star ...

Months ago, I observed a student drawing spiraling circles over and over on a sheet of notebook paper while participating in our class discussion. For some reason, I was reminded of an old toy my ...

Who else remembers Spirograph? When making elaborate spiral doodles, did you ever wish for a much, much bigger version? [Fortress Fine Woodworks] had that thought, and “slapped a router onto it” to ...

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Have you been left in awe by the stunning intricate designs created by a pen and gears by seemingly following the same pattern of movement over and over again? Did you wonder "How the heck is that ...

Have you ever wished you could generate interactive websites with HTML, CSS, and JavaScript while programming in nothing but Python? Here are three frameworks that do the trick. Python has long had a ...

After studying the intricate designs of a pound note, Denys Fisher came up with the idea for the legendary pattern-drawing toy, Spirograph. It won the Toy of the Year in 1967 and had sold over 30 ...

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Colored patterns like spirograph drawings. Isolated vector... Guilloche vector pattern set (watermarks). Useful for banknote, money design Useful for diploma, certificate, note, currency, voucher ...