Sonuçlar gösteriliyor "Architecture" için Astronomi ve Uzay Bilimi kategorisinde

Ninety-five percent of the universe is invisible. Dark matter holds galaxies together; dark energy tears space apart. For a quarter of a century, these two phenomena have been treated as separate mysteries—independent entries in the cosmic ledger, unrelated in origin and opposite in effect. This book argues that they are the same mystery. Drawing on quantum field theory, general relativity, and a systems-theoretic perspective that spans disciplines, Boris Kriger proposes that the energy of empty space is not uniform.

This book was curated by the State Federation of Pennsylvania Women for tourists' use on a journey to Pennsylvania. Each of Pennsylvania's 67 counties has its own chapter, discussing beautiful art and buildings that may be found there (or, in lieu of art, pioneer history). These chapters were each written by a knowledgeable person from that county. While details are often sparse, the guide is an excellent starting point for individuals who wish to learn more about local history of Pennsylvania. Note: While the book was compiled in 1917, the first world war prevented its publication until 1924....