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31. This is particularly a problem for people who shoot indoors under artificial lighting. See note about why I like natural light.

32. For the past 300 years we've consistently spent just about seven-tenths-of-one-percent of our gross domestic product on artificial lighting.

33. Forthcoming facilities might be able to see artificial lighting on another world if it's really much brighter than we use.

34. As with all indoor grow operations, artificial lighting like fluorescents or the LED's shown here must be supplied for any plant life that isn't exposed to sunlight.

35. It does, however, require artificial lighting because the station is without natural daylight for most of the winter.

36. But the greenhouses on the barge were only one storey high, so there was not much need for artificial lighting.

37. He suggested it, because he lives nearby, but it is very noisy - babies are screaming and chairs scrape across the floor - and the artificial lighting is quite bright.

38. Thousands of years ago, there was no television or Internet, no McDonald's, birth-control pills, Viagra, plastic surgery, alarm clocks, artificial lighting or paternity tests.

39. Problems associated with natural and artificial lighting are considered in some detail on pages 107-9.

39. Wish you can benefit from our online sentence dictionary and make progress every day!

40. Due to the intrinsic characteristics of artificial lighting source, its light output in all exists certain stroboscopic.

41. Managing natural lighting can cut your artificial lighting ( and cooling ) needs significantly.