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Mesomorphic states: States of matter intermediate between solid and liquid. Plastic crystal: A molecular solid with long-range positional order but with constituent molecules retaining rotational freedom. Liquid crystal: Properties intermediate between liquids and crystals. Generally, able to flow like a liquid but exhibiting long-range ...
This is a list of properties and districts listed on the National Register of Historic Places in Pennsylvania. As of 2015 [update] , there are over 3,000 listed sites in Pennsylvania. All 67 counties in Pennsylvania have listings on the National Register.
Philadelphia County is unique in Pennsylvania in that it is a consolidated city-county, and so while the county is technically not governed by a home rule charter (and is therefore not included on the list), the fact that Philadelphia City (which constitutes the same land area as and administers all the governmental affairs of Philadelphia ...
Pennsylvania is the fifth-most populous state in the United States, with over 13 million residents as of the 2020 United States census, its highest decennial census count ever. [3] The state is the 33rd-largest by area and has the ninth-highest population density among all states.
This article contains a list of fossil-bearing stratigraphic units in the state of Pennsylvania, U.S. Sites. Group or Formation Period Notes Allegheny Formation:
The top plate illustrates the tectonic setting for the sediments of Pennsylvania. This section is characterized by the metamorphic rocks that provide much of the bedrock for this area. The oldest exposed rocks in Pennsylvania are found here and consist of the Baltimore Gneiss. [8] These rocks have a complex history and a vast array of different ...
Sep. 1—WILKES-BARRE — Treasurer Stacy Garrity this week announced that Pennsylvania will receive more than $20 million in unclaimed property following a settlement that concludes the landmark ...
The Pennsylvania Archives are a 138 volume set of reference books compiling transcriptions of letters and early records relating to the colony and state of Pennsylvania. The volumes were published in nine different series between 1838 and 1935 by acts of the Pennsylvania legislature .