paper capacitors are constructed by
21Timeline of computing hardware 2400 BC–1949 — History of computing Hardware before 1960 Hardware 1960s to present Hardware in Soviet Bloc countries Artificial intelligence Computer science Operating systems Programming languages …
22Loudspeaker — For other uses, see Loudspeaker (disambiguation). An inexpensive, low fidelity 3½ inch speaker, typically found in small radios …
23Physical 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… …
24electromagnetism — /i lek troh mag ni tiz euhm/, n. 1. the phenomena associated with electric and magnetic fields and their interactions with each other and with electric charges and currents. 2. Also, electromagnetics. the science that deals with these phenomena.… …
25Insulator (electrical) — Ceramic insulator at railways Conducting copper wire insulate …
26Nokia — This article is about the telecommunications corporation. For the Finnish town, see Nokia, Finland. For other uses, see Nokia (disambiguation). Nokia Corporation Type Public company Traded as …
27physical science, principles of — Introduction the procedures and concepts employed by those who study the inorganic world. physical science, like all the natural sciences, is concerned with describing and relating to one another those experiences of the surrounding… …
28Carbon nanotube — Not to be confused with Carbon fiber. Part of a series of articles on Nanomaterials Fullerenes …
29Ionocraft — [ thumb|right|A simple ionocraft, generating 15 gF (0.147 newtons) of thrust at 54 kV] An ionocraft or ion propelled aircraft, commonly known as a lifter, is an electrohydrodynamic device (utilizing an electrical phenomenon known as the… …
30Nobel Prizes — ▪ 2009 Introduction Prize for Peace The 2008 Nobel Prize for Peace was awarded to Martti Ahtisaari, former president (1994–2000) of Finland, for his work over more than 30 years in settling international disputes, many involving ethnic,… …
