wˌɛn ɐ sˈæmpəl lˈiːf ɔːɹ ˈælɡəl səspˈɛnʃən ɪz ɪlˈuːmᵻnˌeɪɾᵻd, ðə flʊɹɹˈɛsəns ɪntˈɛnsᵻɾi ˈɪŋkɹiːsᵻz wɪð ɐ tˈaɪm kˈɑːnstənt ɪnðə mˈaɪkɹoʊsˌɛkənd ɔːɹ mˈɪlɪsˌɛkənd ɹˈeɪndʒ.
When a sample (leaf or algal suspension) is illuminated, the fluorescence intensity increases with a time constant in the microsecond or millisecond range.