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1. It is interesting to illustrate, at this point, how Flory's original equation can lead to serious discrepancies if applied without due regard to the actual concentration of materials.

2. The relationship is responsible for the original shifting of this band.

3. It is not clear to what extent this polymerization is affected by orientating influences in the aromatic ring.

4. The motion of a valency electron in its orbital is again equivalent to the flow of a current in the locus of its motion.

5. No final decision between all these various alternatives is possible at present.

6. This, in turn, is multiplied in a harmonic generator to give signals 10 kc apart and near the resonance frequency.

7. These correlations appear to hold, also, for many hydrocarbons.

8. The statistical approach is more powerful than the kinetic approach because it gives numerical values for constants which cannot be evaluated by the kinetic method.

9. Steric influence in the formation of the head-to-tail arrangement may therefore be assumed to cause the heat of polymerization to decrease.

10. The usual means of identifying organic compounds by melting points is either not available or far less characteristic in many of these cases.

11. Hydrogen is bound to be dissolved and chemisorbed by the adsorbent and the treatment must be followed by stringent out-gassing.

12. Among cyclic esters the property of undergoing reversible polymerization is characteristic of and peculiar to the 6-mem-bered rings.

13. A homogeneous system is one which is conventionally defined as one whose properties are the same throughout its extent.

14. Multilayers of different substances may be deposited above one another, and their interdiffusion might be followed with the help of X-rays.

15. The rates and molecular weights are affected by lowering the temperature, the former being decreased and the latter increased.

 

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The Information Explosion

(1) A revolution in communications is taking place. Telephones, formerly connected through underground wires, are increasingly becoming hand held devices that transmit via radio waves. Soon people could be reached anywhere on the globe via a network of satellites.

(2) Conversely, television, originally broadcast on the same frequencies that cellular phones now use, is set to become a digital medium, providing hundreds of different channels piped into homes along optical fibers hair- thin strands of glass that carry enormous amounts of information at the speed of light.

(3) A cellular phone conversation is accompanied by unheard digital exchanges (a series of I and O representing data) as the handset and the computers that control the network process the call.

(4) The cells the phones are named after are a mosaic of hexagonal areas, each with a transmitter/receiver or base station at its center.

(5) More people can use cellular phones than other radio phone systems because the signals used are very weak, so frequencies used I one cell may be reused in another a short distance away.

(6) Every 15 minutes, each base station beams out a message asking all the handsets within its cell to report in. This enables the central computers to know where to route a call when a handset is phoned.

 

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