what are the requirements of good lighting?
1171
['Sufficiency.', 'Distribution.', 'Absence of glare.', 'Absence of sharp shadows.', 'Steadiness.', 'Color of light.', 'Surroundings.', 'Angle of light.']
1225325
For example, if you are using a traditional (incandescent) bulb in the range of 40-60W you need a LED bulb in the range of a 5W-8W as it is equally bright (450 lumens) & hence will give you same amount of brightness with less power consumption. This in turn saves your money as it reduces your electricity bill.
936622
['Bring in All of the Natural Light. The easiest solution for no overhead lighting is to leverage the windows you already have in your apartment. ... ', 'Hanging String Lights. String lights are trendy right now. ... ', 'Plug-in Wall Sconces. ... ', 'Floor Lamps. ... ', 'Add More Light with Mirrors. ... ', 'Table Lamps. ... ', 'Plug-in Pendant Light. ... ', 'Flameless Candles.']
479478
You can use a number of these lamps (with the correct filter and bulb) if they are at the proper distance from the photographic material and are spaced at least 8 feet (2.5 metres) apart. Don't put a direct safelight where it will shine on an enlarging easel and make dodging and cropping difficult.
1244379
The total lumens lighting required are equal to 1,800 square feet times 30 foot candles per square foot, or 54,000 lumens.
30109
To replace a 100 watt (W) incandescent bulb, look for a bulb that gives you about 1600 lumens. If you want something dimmer, go for less lumens; if you prefer brighter light, look for more lumens. Replace a 75W bulb with an energy-saving bulb that gives you about 1100 lumens.
569873
['a source of light.', 'an opaque object.', 'a screen or surface behind the object.']
1169911
Incandescent lights are good for lighting up a room or growing low-light houseplants, such as vines, ferns or dracaenas. They have limited utility for growing plants with higher light requirements. These lights put out only about 10 percent of their energy as light while 90 percent is heat.
508602
With the rapid development of various lighting technologies including fluorescent and now LED lamps, more full spectrum lighting options are becoming available to consumers. Full spectrum lighting is somewhat challenging to fully grasp owing to the fact that it is not directly visible or observable.
912805
['For obtaining pure spectrum following conditions should be satisfied—', '(1) Slit should be narrow,', '(2) Rays coming out from convex lens should have parallel incidence,', '(3) Prism should be in condition of minimum deviation,', '(4) Emerging light rays should be focussed by achromatic lens.']
1400279
['Brightech Sky LED Torchiere Floor Lamp.', 'Brightech Litespan Bright LED Floor Lamp.', 'Brightech Sparq LED Arch Floor Lamp.', 'Revel Akira 80″ Modern 3 Light Arc Floor Lamp.', 'Brightech Madison Bedside Table Floor Lamp.', 'Stone & Beam Deco Black Metal Floor Lamp.']
1430305
A 400 w HPS or a 4' 8 bulb t5 setup would produce enough light for that space, although the t5 will use more watts and produce less lumens. t5's are not more efficient in producing light. HPS is the most efficient way of producing light, followed by MH, then high efficiency fluorescents.
1385563
The 50:50 rule involves calculating the percentage of a room's area which can receive adequate light. The calculations are undertaken at a working plane 850mm above the floor. A point on the working plane is considered adequately lit if it can receive at least 0.2% of the total illumination received from the sky.
1348766
To light in a film noir style, there are three basic things to remember: To get hard crisp shadows, use a small intense light. (Fresnels, lekos, reflector spots) Emphasize the difference between high and low-key lighting (lots of fill, high-key lighting)
1240934
There are three basic types of lighting that work together to light your home: General, Task and Accent. A good lighting plan combines all three types to light an area, according to function and style.
21684
Understanding these four characteristics of light — quantity, quality, color temperature, and direction — won't magically make you a better photographer. The information is important, sure, but it is useless unless you are prepared to take it from the theoretical to the practical. Light is everything in photography.
599165
['the light must be travelling from a more dense medium into a less dense medium (ie glass to air)', 'the angle of incidence must be greater than the critical angle.']