Radioactive decay: remaining fraction after a time, time to reach a fraction (ca...
https://chemistry-calc.x402tookit.com/half-lifeOverview
Radioactive decay: remaining fraction after a time, time to reach a fraction (carbon dating), decay constant and mean life.
Protocol
x402
Price
$0.02
Payment Asset
USD Coin
Payment Network
eip155:8453
Category
uncategorized
Provider
Chemistry Calculators
Source
bazaar
Indexed
2026-10-20 21:22:34
Health
Status
healthy
Latency (p50)
486ms
Uptime (30d)
93.3%
Reliability Score
91.7/100
Last Checked
2026-10-28 06:45:54
Last Healthy
2026-10-28 06:45:54
Consecutive Failures
0
x402 Payment Validation
Payment Requirements
Valid
Asset Verified
Known USDC
Facilitator
—
Input Schema
{
"method": "GET",
"queryParams": {
"elapsed": 11460,
"initial": 100,
"isotope": "c-14"
},
"type": "http"
}
Output Schema
{
"example": {
"asOf": "2026-10-11T08:45:39.195Z",
"decayConstantPerUnit": 0.00012096809,
"decayedAmount": 75,
"decayedPercent": 75,
"degraded": false,
"disclaimer": "Screening signal computed from the named public source. Not financial, legal or investment advice; provided as is. Verify at the source before acting.",
"elapsed": 11460,
"halfLife": 5730,
"halfLivesElapsed": 2,
"isotope": "carbon-14 (half-life 5730 years)",
"meanLife": 8266.6426,
"notChecked": [
"measurement uncertainty and the age calibration needed for real radiocarbon dating (atmospheric C-14 varied over time)",
"decay chains and daughters that are also radioactive",
"…2 more"
],
"reasons": [
"Remaining fraction = (1/2)^(time / half-life); time = half-life x log2(1 / fraction). Mean life = half-life / ln 2.",
"After 10 half-lives about 0.0977% remains."
],
"remainingAmount": 25,
"remainingFraction": 0.25,
"remainingPercent": 25,
"source": "computed locally",
"summary": "carbon-14 (half-life 5730 years): after 11460 years (2 half-lives) 25% remains (25 of 100); decay constant 0.00012097 per unit, mean life 8266.64.",
"unit": "years",
"verdict": "COMPUTED"
},
"type": "json"
}