And There Was Light

Our inner visual world is shaped by the ability of one molecule to exist in two distinct structures, and by the response of this molecule to light. The visual pigment 

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And God said, Let there be light and there was light, but the Electricity Board said... 

And the Lord said let there be light. And there was light, and it was good. 

The body load never mellowed out, as it would have with mescaline, after the first hour or two. Mental effects didn t develop in any interesting way. I was aware of brief heart arrhythmia. Tummy was uncomfortable, off and on, and there was light diarrhea. Even as late as the fifth hour, my feet were cold, and the whole thing left me with a slightly uncomfortable, Why did I bother feeling. 

Again, Genesis l l-5 states "In the beginning God created the heaven and the earth. And the earth was without form, and void and darkness was upon the face of the deep. And the Spirit of God moved upon the face of the waters. And God said. Let there be Ught and there was light. And God saw the light, that... 

Photochemistry is probably the most essential process for life as we know it. At the risk of gross impertinence, one of the first references to illumination is from the book of Genesis, "And God said Let there be light and there was light. And God saw the light, that it was good" [2]. 

Finally, when we are running out of cyclohexane, the process terminates by the interaction of two radical species, e.g. two chlorine atoms, two cyclohexyl radicals, or one of each species. The combination of two chlorine atoms is probably the least likely of the termination steps, since the Cl-Cl bond would be the weakest of those possible, and it was light-induced fission of this bond that started off the radical reaction. Of course, once we have formed cyclohexyl chloride, there is no reason why this should not itself get drawn into the radical propagation steps, resulting in various dichlorocyclohexane products, or indeed polychlorinated compounds. Chlorination of an alkane will give many different products, even when the amount of chlorine used is limited to molar ratios, and in the laboratory it is not going to be a particularly useful process. 

I turned the big key. Then I encountered a heavy curtain, and beyond that a very dimly lit corridor with another curtain, and finally a room. It was barely large enough to hold the table in the center, flanked by two chairs and bearing a lantern, but at last there was light enough for us to see each other. Another door at the far side presumably led to either Sciara s house or a back exit. 

SYNTHESIS A solution of 11.5 g 3-bromo-N-cyclohexyl-4,5-diethoxy-benzylidenimine (see under ASB for its preparation) in 150 mL anhydrous Et20 was placed in a He atmosphere, well stirred, and cooled in an external dry ice acetone bath to -80 °C. There was light formation of fine crystals. There was then added 25 mL of 1.6 N butyllithium in hexane and the mixture stirred for 15 min. This was followed by the addition of 5.8 g diethyl disulfide over the course of 20 min during which time the solution became increasingly cloudy with the eventual deposition of an insoluble gummy phase. The mixture was allowed to come to room temperature over the course of 1 h, and then added to 400 mL of dilute HC1. The organic phase was separated and stripped of solvent under vacuum. This residue was combined with the original aqueous phase, and the mixture was heated on the steam bath for... 

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