Graphite is an interesting material, an allotrope of carbon (as is diamond). It displays properties of both metals, and nonmetals. However, like a metal, graphite is a very good conductor of electricity due to the mobility of the electrons in its outer valence shells.
Arizona, Hawaii, American Samoa, Puerto Rico and the Virgin Islands donât participate in daylight saving. Indiana used to be split, but opted for daylight saving in 2005.
âSpring forwardâ and âfall backâ are seasonal markers for most parts of the countryâ but not all. Daylight Saving Time is not observed in Hawaii or Arizona (with the exception of the Navajo Nation), and itâs also skipped in Puerto Rico and the Virgin Islands. When it comes to the rest of the world, itâs a mix. In fact, only about 70 percent of countries follow Daylight Savings Time.