The electrical resistance of the filament causes it to get so hot that it glows, producing light. The fact that LED lights do not rely on heat to produce its light means it runs cooler and is much more energy-efficient than an incandescent light bulbincandescent light bulbIncandescent bulbs are much less efficient than other types of electric lighting, converting less than 5% of the energy they use into visible light. The remaining energy is lost as heat.https://en.wikipedia.org › wiki › Incandescent_light_bulbIncandescent light bulb - Wikipedia.
Do pendant lights need a box?
Unlike the recessed “can” light, pendant lamps are mostly contained “outside” the box. This is the electrical junction box required by code for most installations, which can be a standard size or a mini “pancake” box that is often surface mounted.