Cosmological Expansion

Autor/in	Linton, J. O.
Titel	Cosmological Expansion
Quelle	In: Physics Education, 47 (2012) 1, S.96-105 (10 Seiten)Infoseite zur Zeitschrift PDF als Volltext Verfügbarkeit
Sprache	englisch
Dokumenttyp	gedruckt; online; Zeitschriftenaufsatz
ISSN	0031-9120
DOI	10.1088/0031-9120/47/1/96
Schlagwörter	Radiation; Mathematics; Mathematical Formulas; Astronomy; Laboratory Equipment; Teaching Methods + Suchen Sie Ihr Suchwort? Strahlung; Mathematik; Mathematische Formel; Astronomie; Laborausstattung; Teaching method; Lehrmethode; Unterrichtsmethode
Abstract	As teachers, we want to encourage our students to ask searching questions on topics like how old the Universe is, how much of the Universe we can actually see and how far away the cosmic microwave background radiation is. But how many of us can honestly say we know the answers? And, even if we know the answers, how are we going to respond to the student's next obvious question regarding how the cosmic microwave background radiation can be 90 billion light years away when the Universe is only 13.6 billion years old? In this article, using some straightforward mathematics I derive some interesting formulae which will not only provide reasonably accurate numerical answers, but, more importantly, give much needed insight into the paradoxes which abound when applying general relativity to the Universe as a whole. (Contains 3 figures.) (As Provided).
Anmerkungen	Institute of Physics Publishing. The Public Ledger Building Suite 929, 150 South Independence Mall West, Philadelphia, PA 19106. Tel: 215-627-0880; Fax: 215-627-0879; e-mail: info@ioppubusa.com; Web site: http://journals.iop.org
Erfasst von	ERIC (Education Resources Information Center), Washington, DC
Update	2017/4/10