which light makes flowers grow the best ? incandescent light or sunlight. also what other lights are there that are available at my house
Sunlight is best. Incandescent light tends to be yellow that is the reason it is difficult to see yellow marks on white paper in that light. Daylight tubes are also better than the filament bulbs.
Sunlight. Natural light is the best light.
Sunlight makes plants grow better. While incandescent light has the same spectrum of light as sunlight, the relative intensity of sunlight is much higher, especially in the parts of the spectrum the plant finds useful.
Wikipedia appears to have a list of various house plants and their lighting requirements, linked below. The minimum listed is 1000 lux. I believe an incandescent globe emits less than half that amount of light, though I couldn't find a reliable source on this. You'll likely need some kind of bright light box, which essentially emulates sunlight. My search for just that is what led me here. Hope this helps. I'd be happy to help you out further if I can.
I'm always amazed that people think sunlight is full spectrum light. Stars (our sun) each have a distinct spectrum of light that astronomers use for identification. In addition, a planets atmosphere will filter out various wavelengths. Finally the amount of atmosphere light travels through makes a big difference. Light is bluest at noon, on a mountain, at the equator. Light is reddest at sunrise or sunset, on a beach, near one of the poles. New technology can produce lighting superior to sunlight for plant growth but it's expensive. As to the second part of your question, other lights around the house. A four foot shop light lamped with one cool white and one warm white bulb produce more usable light than expensive grow lights. CFs (compact fluorescent) are the new kid on the block and come in many different flavors of light. One, called 'Sunlight' by Lights of America, is a very good plant light.
