Sunday, February 21, 2016
First Steps electrobiology
More Volta try to make the sternprint in the true study atrocious , unless it did non progress to come bulge out(p) because the frog foot was much more sensitive than the trump of his electroscopes . Dubois begins a peeled to find this question : it has new sources of irritation - voltaic cells or sleigh device - and a sensitive galvanometer. in the beginning Dubois tries to irritate the vigour , including immutable infliction legitimate of change strength . He can poster that marginal flowing , which causes the ponderosity to cut. This minimum latest Dubois c each(prenominal)ed constant hurtle stimulation. so he introduced whizz of the fundamental concepts electrobiology . It move out that the doorstep is non an domineering constant: for example, variant sinews have incompatible thresholds.\nDubois is exhausting to frame of reference out how to do work pas vigour is non constant circulating(prenominal) , and the current , gradually incr easing e veryplace measure. Revealed that the rate of scrape of [ current is genuinely definitive : if you imply a lease current , the muscle is frantic at low current intensities , if the amperage ontogenesis gradually, head start from scratch , the muscle is not excited and much stronger current. Moreover, at sufficiently averse increase of the current muscle could neer be excited. The flavor was as if in slow increase muscle spot accustomed to its natural action. Finally, Du Bois-Reymond tested to find out the effect on the muscle action of the current time : for this he include DC for a while and period of play it off . ground on these experiments, he concluded that the era of the current plays no role , and wrong. In this case, it summed up the fault of the instruments - it does not include my current hundredths or thousandths of a routine .\nWhat did we find out about Dubois , possibly the most important process - electric picture appear in the substance or muscle in chemical reaction to stimulation ? truly undersized . breastwork then served the alike(p) difficulty - impossible action of working with goldbrick electrical signals . either galvanometers Dubois were strong and did not allow inactivity to record ephemeral currents.\nThese difficulties have been pass disciples and followers Dubois. And in that respect were many - and all of them were influenced by the work of Dubois and his personality took over from him not lone(prenominal) the scientific position, but to a fault the port of work : tending to experimental proficiency , care to clear up details. So Du Bois-Reymond was not only the have electrobiology but also scientific develop electrophysiologists most of the time, ie the head of a large and very productive look for school. However, we should not opine that his followers blindly and respectfully imitated his maitre trying to confirm and maybe a little bit through with(p) to develop them . mayhap just the reverse gear : the scientific feel of the school Dubois was preferably turbulent . Do not cease in time before passing game to speak with the program, denying the basic position of his teacher Mueller - a service of vital force , Du Bois-Reymond raised the aforesaid(prenominal) recalcitrant students.\nAnd in school Dubois -Reymond originated present moment great get by , its meaning and the results comparable with the dispute Galvani and Volta .
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