performance energy ratio
81Oxygen — This article is about the chemical element and its most stable form, O2 or dioxygen. For other forms of this element, see Allotropes of oxygen. For other uses, see Oxygen (disambiguation). nitrogen ← oxygen → fluorine ↑ O ↓ …
82Passive solar building design — Elements of passive solar design, shown in a direct gain application …
83Pontiac GTO — Infobox Automobile name = Pontiac GTO manufacturer = Pontiac parent company = General Motors class = Muscle car production = 1964 ndash;1974 2004 ndash;2006 predecessor = Pontiac Grand Prix Coupe successor = Pontiac G8 (2008) layout = FR… …
84Earthquake engineering — is the study of the behavior of buildings and structures subject to seismic loading. It is a subset of both structural and civil engineering.The main objectives of earthquake engineering are: * Understand the interaction between buildings or… …
85Industrial and organizational psychology — Psychology …
86Solar cell — A solar cell made from a monocrystalline silicon wafer …
87Pontiac Grand Prix — Infobox Automobile name=Pontiac Grand Prix manufacturer=General Motors production=1962–2008 class=Personal luxury car (1962 1987) Mid size (1988 2008) successor=Pontiac G8 (US Canada) Pontiac G6 (Mexico)The Pontiac Grand Prix was an automobile… …
88Physical Sciences — ▪ 2009 Introduction Scientists discovered a new family of superconducting materials and obtained unique images of individual hydrogen atoms and of a multiple exoplanet system. Europe completed the Large Hadron Collider, and China and India took… …
89Hard disk drive — Hard drive redirects here. For other uses, see Hard drive (disambiguation). Hard disk drive Mechanical interior of a modern hard disk drive Date invented 24 December 1954 [1] …
90Piano — Pianoforte redirects here. For earlier versions of the instrument, see Fortepiano. For other uses of Piano, see Piano (disambiguation). Piano Bösendorfer grand piano Keyboard instrument …
