Description
Conditional supplied power-law light scaling, not an extended-source lighting model.
An indoor-growing record or design budget combines quantities such as tray area, operating time, water volume, electrical energy, and light output. Ratios depend on a stated production boundary and period. Supplied conversion factors and idealized geometry need to remain separate from measured equipment and crop performance.
Conditional supplied power-law light scaling, not an extended-source lighting model.
When to use this tool
Use Shelf Light Distance Supplied Irradiance Factor when you need one stated production, lighting, water, or geometry term from a consistently defined growing-system budget.
How to use the tool and how it works
- Enter referenceIrradiance, referenceDistance, distance, suppliedExponent. Use the units and conventions below.
- Run the tool. Correct any format, range, or cross-field input error before interpreting the output.
- Read conditionalIrradiance. Use the output convention below.
Calculate conditionalIrradiance=referenceIrradiance*(referenceDistance/distance)^suppliedExponent. Require nonnegative reference irradiance and positive distances.1
| Input field | Meaning and units | Accepted input |
|---|---|---|
| referenceIrradiance | Reference Irradiance | Required. Finite number; minimum 0. |
| referenceDistance | Reference Distance | Required. Finite number; strictly above 0. |
| distance | Distance | Required. Finite number; strictly above 0. |
| suppliedExponent | Supplied Exponent | Required. Finite number. |
| Output field | Interpretation | Returned shape |
|---|---|---|
| conditionalIrradiance | Conditional Irradiance | Required. Finite number. |
{
"input": {
"referenceIrradiance": 100,
"referenceDistance": 1,
"distance": 2,
"suppliedExponent": 2
},
"output": {
"conditionalIrradiance": 25
}
}Limitations and assumptions
- The exponent is supplied and is not restricted to inverse-square behavior. Distances must share a unit; extended fixtures, reflections, near-field effects, and crop light requirements are not modeled.
- The field tables state structural bounds; the mechanics also specify cross-field constraints. Malformed inputs and unsupported domains cause errors. A successful false flag, empty branch value, or zero placeholder has the meaning stated above and is distinct from an input error.
- Numeric calculations use binary floating point unless exact decimal-integer arithmetic is explicitly stated. No hidden measurement tolerance or decimal rounding is added; nonfinite or out-of-contract results are rejected. Signed zero is exported as zero.
Alternative or Complementary methods
Compare the supplied budget with measured system records and keep the same production boundary. Equipment selection, installation, and crop requirements need an appropriate engineering or agronomic assessment.
References
Similar or alternative tools
- Grow Light Time Energy Factor
Convert supplied lighting power-time to energy without selecting crop lighting settings.
- Light Duty Warmup Credit
Supplied lighting energy ledger under an explicit constant warmup-power approximation.