r/Radiation↗
For discussion of ionizing radiation
r/Radiation is your home on Reddit for discussing the science, careers , equipment and anything else related to ionizing radiation (alpha, beta, gamma, etc.) Do not post about non-ionizing radiation here (RF/EM/3G/4G/5G/microwave, etc). We welcome submissions from professionals and enthusiasts, however, this is not a collector subreddit. Submissions must be substantially about ionizing radiation or fostering greater understanding or discussion of radiation. Do not ask for medical advice.
80k subscribers114 posts / mo in Sep 202698 authors / mosince 2011
r/Radiation has 80k members (+36% over the last 12 months). It gets about 114 posts a month from 98 people. Top topics: Uranium Glass Collection Help, Watch Brands and Models and Radioactive Waste Contamination.
When to post on r/Radiation
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Visitors without an account can open 3 subreddit reports a day. The best time to post on r/Radiation, removal risk and the rest of the report are one step away.
How r/Radiation has grown
Subscriber growth
Subscribers over time
Monthly activity
Posts, comments and authors per month
Topics and brands on r/Radiation
Top topics
Share of the subreddit's posts
- Uranium Glass Collection Help1.1%
- Watch Brands and Models0.7%
- Radioactive Waste Contamination0.5%
- Uranium Glass Identification0.5%
- Uranium Glass Collection0.5%
Brands people mention
Most-mentioned brands and sites, last 12 months
- International Atomic Energy Agency
- eBay
- ScienceDirect
- Nature
- US EPA
Everything else about r/Radiation
Posting rules and account requirements, how often posts get removed, who writes here (age, gender, countries), what people ask for, how they talk, and related subreddits — all in the full report.
Posts and activity for Sep 2026. Members from Reddit's subscriber counts. Read from the same data the app runs on. Our research