Hertzon is an open-source 3D full-wave electromagnetic simulator that provides a classic engineering workflow - draw geometry, assign boundaries and excitations, add solution setups with adaptive meshing, run frequency sweeps, and inspect S-parameters, fields and radiation patterns. Its finite-element core is EMerge (2nd-order Nédélec FEM) and Hertzon layers on a GUI (Qt + VTK) plus solver extensions: hzmesh and local Delaunay meshing, curved elements, a fast error estimator, adaptive refinement, accelerated assembly kernels, far-field/RCS post-processing, and fixes for large models. It is distributed under GPL v2+, built for responsiveness by tessellating geometry incrementally, running the solver in a separate process, and streaming results into the interface; a clear “active development” notice asks users to validate critical results.
Installation is provided as platform-specific installers, a portable Windows executable, or via pip for manual setup; the first run compiles numba kernels and the solver. Project files are JSON and results export to common formats (Touchstone, CSV, .npz). A comprehensive examples suite and benchmark cases validate accuracy (e.g., sphere RCS against the Mie series, waveguide and patch references). Headless operation and scripting are supported (export EMerge Python scripts, run solver from CLI), and an MCP server lets AI assistants (Claude Code, Codex, VS Code/Copilot) build and run simulations. Documentation covers feature matrix and mesher details for users deciding whether to adopt or test it.
Summary generated by AI from the linked article. hn.today is not affiliated with Hacker News or Y Combinator.
Scientists have developed a synthetic cell that closely resembles living organisms. Researchers are now exploring potential applications and implications of this nearly alive cell technology. (nytimes.com)
Pascal, a startup, has developed a new material that makes heat pumps about 20% more efficient, challenging the 170-year-old technology. The company has raised $8.5 million and plans to deliver prototypes early next year. (techcrunch.com)
The United Nations Environment Programme reports that the 1.5°C limit of the Paris Agreement is no longer achievable by 2100. Urgent emission reductions are necessary to prevent further climate damage. (unric.org)
Hilbert space provides the mathematical framework for quantum mechanics, allowing physicists to explore all possible futures of quantum objects. These possibilities are represented as vectors in an abstract space, revealing the fundamentally probabilistic nature of quantum phenomena. (quantamagazine.org)
External counterpulsation (ECP), a treatment developed in the 1970s for heart failure, may improve blood flow to the brain and benefit Alzheimer's patients. A clinical trial showed that ECP led to cognitive improvements in 78% of early-stage dementia patients, suggesting vascular health plays a key role in the disease. (sciencealert.com)
Cities worldwide are sinking due to excessive groundwater extraction, causing land subsidence and increased flood risk. Replenishing groundwater can reverse this process, especially in areas with faultlines that influence land uplift. (cleantechnica.com)
Today's best Hacker News stories, summarized and screenshotted, one email a day.