Skip to the card

Card 738 of 9932026-09-21 issue

Observed arrival · 2026-09-21

ROOT-A-TRON 3000

rootatron.com Visit website
Editorial interest 79/100 Selection signal · not a rating of the site

A browser interface for turning measured data into plots and fitted curves with CERN ROOT.

Landing page captured for the 2026-09-21 issue.
For
People fitting measured data with CERN ROOT
Worth noticing
It supports χ² and binned Poisson-likelihood fits, with parameter uncertainties and diagnostics rendered through JSROOT.

Field notes

The application presents two workflows for the same browser-held analysis: Standard separates data, fit settings, and results, while Compact keeps them together in a retro desktop arrangement. Its scientific layer is explicitly tied to CERN ROOT, including χ² and binned Poisson-likelihood fits, parameter uncertainties, and diagnostics; JSROOT handles browser graph display. The creator labels it a prototype and notes that idle free hosting can make the first fit take roughly 30–60 seconds.

Observed signals

Read the marks

Editorial observations of this landing page, not a rating.

OpenPublic substance visible
PrettyNotable craft visible
ProPolished or operationally mature
NicheUnusually specific use

One card from the complete issue

A Passport-Sized Place to Begin

246,713 arrived 999 judged 993 catalogued Enter the complete issue
rootatron.com

Landing page observed 2026-09-21. The live site may have changed.