adjusting needle
21Model engine — For the band (previously known as Black Eyed Sceva), see Model Engine. An old Cox Babe Bee 0.049 cubic inch (0.8 cubic cm.) reed valve engine disassembled. The weight is two and a quarter ounces with the propeller and large fuel tank, but without …
22performing arts — arts or skills that require public performance, as acting, singing, or dancing. [1945 50] * * * ▪ 2009 Introduction Music Classical. The last vestiges of the Cold War seemed to thaw for a moment on Feb. 26, 2008, when the unfamiliar strains …
23plant disease — ▪ plant pathology Introduction an impairment of the normal state of a plant that interrupts or modifies its vital functions. All species of plants, wild and cultivated alike, are subject to disease. Although each species is… …
24Diesel engine — Diesel engines in a museum Diesel generator on an oil tanker …
25Barometer — Schematic drawing of a simple mercury barometer with vertical mercury column and reservoir at base …
26Air navigation — The principles of air navigation are the same for all aircraft, big or small. Air navigation involves successfully piloting an aircraft from place to place without getting lost, breaking the laws applying to aircraft, or endangering the safety of …
27Nadaswaram — A typical ensemble of two nadaswaram and two thavil The nadaswaram, also spelt nadhaswaram, and also called nagaswaram (Tamil: நாதஸ்வரம்), is one of the most popular classical musical instruments in the South Indian culture and the world s… …
28Headset (bicycle part) — The headset is the set of components on a bicycle which provide a rotatable interface between the bicycle fork and the bicycle frame itself. The short tube through which the steerer of the fork passes is called the head tube. A typical headset… …
29Invention of radio — Great Radio Controversy redirects here. For the album by the band Tesla, see The Great Radio Controversy. Contents 1 Physics of wireless signalling 2 Theory of electromagnetism …
30Insect wing — Original veins and wing posture of a dragonfly. Hoverflies hovering to mate …
