 520  213. Virtually all modern headphones fall into one of three generic groups: magnetic, crystal, or dynamic. In all the units we checked, only one was found to fall outside these categories — it being a variable-reluctance device. 214. Perhaps one of the biggest problems is ventilating sucts. They act as speaking tubes, carrying noise from one area to another. Conversations overheard from office to office or from one toilet room to another are likely to cause embarrassment, at the very least. 215. The reactions of benzyl and cinnamylchlorides are similar; here the reactants are also mesomeric, but there is nevertheless an increase in activation energy during reaction, the benzyl and cinnamyl radicals having larger resonance energies than the parent chlorides. 216. The amplifier is so designed that, should one of these transistors open circuit, the feedback network would operate to continue to provide a fairly flat transmission path without excessive loss. 217. It has been shown that emphasis is necessary in step 2a because the choice it includes has not been adequately recognized in the past. It is this step which essentially determines the form of the system of equations and the magnitude of the derived units. 218. Since the data of Bernardini and Goldwasser are generally believed to indicate proportionality of 6 to the pion momentum in this energy region the retardation effects are not likely to be very strong because if they were the threshold law for S pion ejection would be obeyed poorly. 219. The satellite is in a 100 per cent sun-time orbit with the transmitter assembly located on the shadow side of the vehicle normal to the sun vector. This is a steady-state position with the transmitter assembly receiving no direct solar energy. 220. Decapryn is considered to be one of the prominent anti-histamine drugs. Although certain compounds containing a quin-oline or isoquinoline nucleus have been found to have antihista-mine activity, no analogs of Decapryn containing a quinolyl oisoquinolyl group have been reported. 221. The fact of instability of heavy nuclei throws light on the question as to why there are only ninety-two elements in nature; in fact any nucleus heavier than Uranium could not exist for any period of time and would immediately break into much smaller fragments. 520 |
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