coupling adjustment
31Superheterodyne receiver — A 5 tube superheterodyne receiver made in Japan around 1955 In electronics, a superheterodyne receiver (sometimes shortened to superhet) uses frequency mixing or heterodyning to convert a received signal to a fixed intermediate frequency, which… …
32Dirac equation — Quantum field theory (Feynman diagram) …
33Anxiety disorder — Classification and external resources The Scream (Norwegian: Skrik) an Expressionist painting by Norwegian artist Edvard Munch ICD 10 …
34Drum brake — A drum brake with the drum removed as used on the rear wheel of a car or truck. Note that in this installation, a cable operated parking brake uses the service shoes …
35Steam locomotive — A steam locomotive is a locomotive powered by steam. The term usually refers to its use on railways, but can also refer to a road locomotive such as a traction engine or steamroller.Steam locomotives dominated rail traction from the mid 19th… …
36Porsche 959 — Infobox Automobile name=Porsche 959 manufacturer=Porsche class=Sports car 200 produced production=1986–1989 (337 produced) [cite book |title=Porsche. Excellence Was Expected, vol.3 |last=Ludvigsen |first=Karl |year=2003 |publisher=Bentley… …
37Solar thermal energy — Solar thermal system for water heating in Santorini, Greece …
38Open relationship — The Purple Mobius symbol for polyamory and non monogamy. An open relationship is an interpersonal relationship in which the parties want to be together but agree to a form of a non monogamous relationship.[1] This means that they agree that a… …
39Pocket watch — This article is about the portable timepiece. For the Dave Grohl album, see Pocketwatch (album). A gold pocket watch with hunter case and watch chain …
40Belt (mechanical) — For other belts, see Belt (disambiguation). A pair of vee belts …
