Hi Narouz,
For the "continuous" spectrum, I understand that Peat is referring to the typical daylight or incandescent bulb light, where the PSD (power spectral distribution) is "smooth" (even if they have a couple of maximums, most of the power is still in the whole bandwidth); contrasted to the "discrete" or spiky form of the fluorescent light PSD, where the power is basically in 3 or 4 spikes and very low power density in the rest of the spectrum bandwidth
From both Peat and the links provided by Katia I see that since the most beneficial band is the 850-590 nm, which means that incandescent normal and halogen bulbs would be best. I would expect "heat" lamps to not be that good or at least not much efficient, since they´re designed so that most of the energy is in the infrared part of the spectrum, which means at red they´re already giving low energy and not really giving much in the orange range (590-610nm band).
For the "continuous" spectrum, I understand that Peat is referring to the typical daylight or incandescent bulb light, where the PSD (power spectral distribution) is "smooth" (even if they have a couple of maximums, most of the power is still in the whole bandwidth); contrasted to the "discrete" or spiky form of the fluorescent light PSD, where the power is basically in 3 or 4 spikes and very low power density in the rest of the spectrum bandwidth
From both Peat and the links provided by Katia I see that since the most beneficial band is the 850-590 nm, which means that incandescent normal and halogen bulbs would be best. I would expect "heat" lamps to not be that good or at least not much efficient, since they´re designed so that most of the energy is in the infrared part of the spectrum, which means at red they´re already giving low energy and not really giving much in the orange range (590-610nm band).