Dobson, Gordon

Dobson, Gordon Miller Bourne (1889-1976) British physicist and meteorologist He built the first ozone spectrophotometer and studied the results over many years (now called Dobson spectrometer or Dobsonmeter giving the Dobson unit). 

Irwin, Keith Gordon. The romance of chemistry, from ancient alchemy to nuclear fission. Illustrated by Anthony Ravielli. New York Viking Press, 1959 reprint, London Dobson, 1960. 148p. 

Dobson and Gordon (37) have calculated averaged in various ways over the MWD for the product of random /-functional polycondensation reactions. 

Fig. 8. Random crosslinking of monodisperse chains and aPoisson distribution of primary chains ve jy 1 Poisson distribution and monodisperse chains, Pn- oo 2 monodisperse chains jP = 10.Pci/P 3 monodisperse chain and Poisson distribution, Pn-> oo 4 Poisson distribution, Pn = 10 5 monodisperse chains P = 10. The dotted lines show the gel point and full conversion for Pn = 10 [Dobson and Gordon (4 )]...

Fig. 10. The fraction r0/yei for random crosslinking of high molecular weight primary chain distribution. 1 monodisperse or Poisson, 2 most probable, 3 self-convoluted random [Dobson and Gordon (4/)]...

Such structuring is necessarily an intermolecular effect. The simplest type of an intermolecular effect, which should be treated first, is due to the crosslinks between the chains themselves. Dobson and Gordon (50) have remarked that most crosslinks are actually short chains of one or several links, which upon straining the network, become oriented but cannot be stretched. As a result an additional entropy force should arise, which has not yet been accounted for in the Gaussian theory. This force can be calculated on the basis of the Kuhn and Grun (114) chain vector orientation argument, which yields in extension... 

Dobson, G. R., and M. Gordon Configurational statistics of highly branched polymer systems. J. Chem. Phys. 41, 2389 (1964). 

Basu-Modak S, Gordon MJ, Dobson LH, Spencer JP, Rice-Evans C, Tyrrell RM (2003) Free Radic Biol Med 35 910... 

For more than 80 years atmospheric ozone has been measured from the ground using a Dobson UV spectrometer, invented by Gordon M. B. Dobson (1889-1976), that measures UV absorbance through a vertical ozone column simultaneously at two wavelengths (>90 percent of... 

G. Dobson and M. Gordon, Trans. Inst. Rubber Ind. 1964,40, T262... 

It is based on pure crystalline monomers, and kinetic as well as more sensitive statistical tests show that essentially a single random rate process furnishes the intermolecular links, while the small amount of cyclisation can be allowed for to a good approximation. It is therefore of value as a more reliable material than those used previously to test the network theory of the tree-like gel model against measurements of E, and particularly to estimate the controversial front factor in the classical equation of state of rubbers. The plots c and d in figs. 2 and 3 are based on the equations (cf. Dobson and Gordon )... 

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