Fluorescents are always 3-4 times more efficient than halogens which are a version of incandescent bulb.
0 watts
Incandescent produces about 10 lumens of light per watt of electricity Halogen produces about 13 lumens per watt Fluorescent and CFL produce about 50 lumens per watt So Fluorescent is the most efficient.
Tungsten halogen light because the graph shows that rapidly increases and doesn't go down
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.
Yes, as long as it is just incandescent bulb lighting connected to the track. If there is a transformer between the voltage source from the track and the light bulb (e.g. low voltage quartz bulbs) then these fixtures can not be dimmed.
Florescent light-bulbs CFL Compact Fluorescent Lamp
Incandescent produces about 10 lumens of light per watt of electricity Halogen produces about 13 lumens per watt Fluorescent and CFL produce about 50 lumens per watt So Fluorescent is the most efficient.
about 5 times as efficient.
Fluorescent bulb is the more efficient one as compared to incandescent bulbs.
The energy saving light-bulbs are usually fluorescent. Neon is a type of fluorescent light bulb.
Light bulbs in order of the least to most energy efficient : incandescent, halogen, fluorescent, LED. For home owners, most reasonable is the CFL lightbulb, which is cheaper and longer lasting than the LED.
It is about 5 times more efficient than the incandescent bulb, in other words for the same light a fluorescent uses one fifth the electric power.
Halogen bulbs are about 30% more efficient so a 70 watt halogen does the job.
Fluorescent is more efficient. Incandescent bulbs should not be used any more, except for some special purposes (mainly where they keep something warm).
Tungsten halogen light because the graph shows that rapidly increases and doesn't go down
A table lamp with a fluorescent or LED bulb provides excellent energy efficient lighting. Almost any lamp can accommodate a compact fluorescent or LED bulb which makes any fixture more efficient.
Halogen+++No longer. LED-based fluorescent lamps use a lot less electricity than halogens for similar light levels - much of the energy emitted by a halogen lamp is heat, although it is more efficient than the equivalent argon-filled incandescent lamp. (A halogen bulb is still an incandescent type - it simply uses a different gas filling from the conventional bulb.)
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).