Examples
Examples
Try the starting example
- Observed times (hours)
- 0,1,2,3
- Observed cooling temperatures (°C)
- 600,400,250,150
- User-selected observation threshold (°C)
- 200
- First observed downward crossing time (hours)
- 2.5
- Cooling rates by interval (°C/hour)
- [-200,-150,-100]
Try another scenario
- Observed times (hours)
- [0, 1, 2, 3]
- Observed cooling temperatures (°C)
- [600, 400, 250, 150]
- User-selected observation threshold (°C)
- 300
- First observed downward crossing time (hours)
- 1.666667
- Cooling rates by interval (°C/hour)
- [-200,-150,-100]
Calculation method
Calculation method
First observed downward crossing time (hours)
Linear interpolation of first segment crossing supplied threshold; no future extrapolation.
Cooling rates by interval (°C/hour)
(next temperature−previous temperature)/time interval; observed only.
Symbols and units
- a
- Observed times (hours)
- b
- Observed cooling temperatures (°C)
- c
- User-selected observation threshold (°C)
Use the units shown. A list keeps the order in which you enter its values. The symbol ^ means “raised to the power of”.
Assumptions & limits
Assumptions & limits
- Observed cooling threshold worksheet only. User-selected handling threshold is not validated and does not certify safe opening or handling. Quantities are deterministic calculations from supplied observations and assumptions; no external data is fetched. Supported limits: Finite inputs only; numeric fields bounded as labelled. Lists and JSON records are limited to 256 entries unless a stricter tool bound is stated. No automatic design approval, legal conclusion, treatment recommendation or safety certification. Observed times (hours): minimum None, maximum 1000000000000.0. Observed cooling temperatures (°C): minimum None, maximum 1000000000000.0. User-selected observation threshold (°C): minimum None, maximum 1000000000000.0.
Are these inputs private?
These calculations run in your browser. A shared link contains the values you choose to share. Only questions submitted to the separate AI finder are sent to OpenAI.