Why Leds Are Better Than Halogen.

A light bulb can be commonly found in every home, around 30% of household electricity bills are for lighting, by replacing inefficient lighting with a more energy efficient and cost effective light, the electric bill can reduce significantly. Almost every person grew up under lights but the physics of a bulb when it is lit for example, the ratio of heat and light output is often disregarded. This article explains and justify why Light-Emitting Diode (LED) are far more energy efficient than Halogen lamps and should be used in every house.

Halogen Lamp

Incandescent lights such as the halogen lamp are inexpensive and the most commonly used form of lighting. A standard 100-watt halogen light bulb creates an intense glare that is uncomfortable for home daily uses, it has a high flickering rate that will be noticeable the longer it is used. It also outputs a high level of UV radiation from the intense heat it creates when functioning that can harm skins and even cause serious retinal damage if stared at it for period of time, a more in-depth look into harmful effects such as UV output will be discuss later on for both lights. [3] [5] Lumens per Watt is the efficiency of electric converted to visible light, it is calculated using lm=W×(lmW) where lm = lumens, W = power(watt), a standard Halogen lamp has an efficiency of 16 – 24 lm/w which not ideal compared to LED’s 30 – 90lm/w, refer to figure 1 in Appendix. [7] Halogen bulb lights up by using the electrical energy to heat up the tungsten sticks filament and glow white heat, in fact, more than 90% of the energy is transformed into heat while only 10% of the energy output is light. At summer, the heat from halogen bulb can increase the demand on artificial cooling which produces more carbon dioxide which is non-ideal for the environment. With most of the energy used on heating, the bulb can be extremely hot when lit and can be a potential fire hazard if not properly replaced when its lifespan is running out....