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the most economical is the incandescent bulb because the power of bulb is low only while the fluorescent lamp is low and additional the power of ballast from 10%-20% power consumed.but the fluorescent lamp is 5 times brightly the incandescent bulb.
A 20 watt incandesent bulb is dim. For a medium sized room you need 100 watts. A 20 watt halogen bulb is brighter but still quite dim. These are marketed as low-energy but they are not. For a medium sized room you need 80 watts. A 20 watt fluorescent bulb can light a medium sized room quite brightly. This is a genuine low energy bulb.
No, a fluorescent bulb uses one fifth of the energy for the same brightness. <<>> Some people think of fluorescent tubes and bulbs as hugely unfriendly to the environment because of the poisonous and/or polluting materials used to manufacture them - and then the need to dispose of them properly after they have reached the end of their useful life. If the tubes and bulbs get broken and the poisons and/or pollutants in them are allowed to enter water-courses, this can cause severe effects. <<>> However the severe effects caused by excess carbon dioxide pollution in the atmosphere from the use of incandescent bulbs are considerably more serious and even more hugely unfriendly to the environment. In the lifetime of a fluorescent 20 watt bulb (8000 hours) the energy used is 160 kWh, while the equivalent 100 watt incandescent bulb uses 800 kWh in that time, giving rise to more than half a ton of CO2. This has to be compared to 0.005gram of mercury in a fluorescent bulb, which is considerably less than the mercury released by a coal-fired power plant in generating the energy to light it.
A 20 watt CFL may fit into the 60-watt standard. But you should never fit one higher than the 60-watt, due to such a high fire hazard. It's not exactly the wattage but the heat coming from the bulb, so keep in mind not to go any higher than 60.
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the most economical is the incandescent bulb because the power of bulb is low only while the fluorescent lamp is low and additional the power of ballast from 10%-20% power consumed.but the fluorescent lamp is 5 times brightly the incandescent bulb.
A 20 watt incandesent bulb is dim. For a medium sized room you need 100 watts. A 20 watt halogen bulb is brighter but still quite dim. These are marketed as low-energy but they are not. For a medium sized room you need 80 watts. A 20 watt fluorescent bulb can light a medium sized room quite brightly. This is a genuine low energy bulb.
An Energy Star qualified compact fluorescent light bulb can save you around $30 over it's lifetime, paying for its self in about 6 months.
The weight of one 8 foot fluorescent light bulb is 1.2 pounds. Fluorescent light bulbs are available in many colors and color temperatures.
The SI unit, called the joule, is a fairly small unit (a typical fluorescent light bulb uses 20-40 joules every second). If you need even smaller units, you can use the millijoule, the microjoule, etc.The SI unit, called the joule, is a fairly small unit (a typical fluorescent light bulb uses 20-40 joules every second). If you need even smaller units, you can use the millijoule, the microjoule, etc.The SI unit, called the joule, is a fairly small unit (a typical fluorescent light bulb uses 20-40 joules every second). If you need even smaller units, you can use the millijoule, the microjoule, etc.The SI unit, called the joule, is a fairly small unit (a typical fluorescent light bulb uses 20-40 joules every second). If you need even smaller units, you can use the millijoule, the microjoule, etc.
Saving money does not have to involve reducing your quality of life. One of the quickest ways to save money is switching the light bulbs in your house from incandescent bulbs to compact fluorescent bulbs. Studies have shown that switching to compact fluorescent bulbs can save $35 per bulb over the 10 year life of the bulb. Even discounting for the higher expense of the fluorescent bulb, replacing 20 bulbs in a house can save a consumer $500. An additional bonus to using fluourescent bulbs is that they generate less heat than an incandescent bulb, which will also help lower the cost of cooling a home in the summer.
An incandescent bulb is 96% efficient as a heater, and 4% efficient as a source of light. A fluorescent bulb is only 60% efficient as a heater, and 40% efficient as a source of light. An LED bulb is only 10-20% efficient as a heater, and 80-90% efficient as a source of light (but that light is usually unidirectionally directed... harder to do diffuse lighting with them).
No, a fluorescent bulb uses one fifth of the energy for the same brightness. <<>> Some people think of fluorescent tubes and bulbs as hugely unfriendly to the environment because of the poisonous and/or polluting materials used to manufacture them - and then the need to dispose of them properly after they have reached the end of their useful life. If the tubes and bulbs get broken and the poisons and/or pollutants in them are allowed to enter water-courses, this can cause severe effects. <<>> However the severe effects caused by excess carbon dioxide pollution in the atmosphere from the use of incandescent bulbs are considerably more serious and even more hugely unfriendly to the environment. In the lifetime of a fluorescent 20 watt bulb (8000 hours) the energy used is 160 kWh, while the equivalent 100 watt incandescent bulb uses 800 kWh in that time, giving rise to more than half a ton of CO2. This has to be compared to 0.005gram of mercury in a fluorescent bulb, which is considerably less than the mercury released by a coal-fired power plant in generating the energy to light it.
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A 20 watt CFL may fit into the 60-watt standard. But you should never fit one higher than the 60-watt, due to such a high fire hazard. It's not exactly the wattage but the heat coming from the bulb, so keep in mind not to go any higher than 60.
you can make a light bulb by holding alt + 20.