How Does Hydrogen Power Work: Hydrogen is efficient fuel to use to generate electricity. It is available in great amount and does not put negative effects like emission of harmful gases or greenhouse effect. This non-toxic gas is easy to produce from many renewable energy sources.
Noun. 1. sheikh-the leader of an Arab village or family. Arab chief, sheik, tribal sheik, tribal sheikh. ruler, swayer-a person who rules or commands; swayer of the universe.
While Egypt captivates world media, hereâs a bit of background on the word caliphate. The definition of caliphate is âgovernment under a caliph.â A caliph is a spiritual leader of Islam who claims succession from Muhammad. The word stems from the Arabic khalifa meaning âsuccessor.â.