high light intensity exposure EO:0007075 A foot-candle is a unit of illuminance equal to one lumen per square foot, measuring how much light is received by a surface. plant_experimental_conditions_ontology A light intensity exposure (PECO:0007224) where the intensity of the light for plant growth is between 500–1,000 foot-candles. high light intensity treatment (narrow) PECO:0007075 light intensity exposure