Light Bulbs | LED vs. Incandescent

Why are LEDs so much more efficient than incandescent light bulbs? Do LEDs have disadvantages?
These are some of the questions I answer in this video about light bulbs. I also test the claimed wattage and find some anomalies...

Full music credit:
Neo Western - Kevin MacLeod (incompetech.com)
Licensed under Creative Commons: By Attribution 3.0 License
http://creativecommons.org/licenses/b...
ISRC: USUAN1100615

Lightless Dawn - Kevin MacLeod (incompetech.com)
Licensed under Creative Commons: By Attribution 3.0 License
http://creativecommons.org/licenses/b...
ISRC: USUAN1100655

Easy Lemon - Kevin MacLeod (incompetech.com)
Licensed under Creative Commons: By Attribution 3.0 License
http://creativecommons.org/licenses/b...
ISRC: USUAN1200076

Pop:Club - Gerardo Garcia Jr.
http://sounds.productioncrate.com/ele...