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"With a shock to the head, the animal was rendered lifeless, and arose with a second shock to the chest; however, after the experiment was repeated rather often, the hen was completely stunned, walked with some difficulty, and did not eat for a day and night; then later it was very well and even laid an egg." Abildgaard, Peter Christian. On 20th September 1786 he wrote "I had dissected and prepared a frog in the usual way and while I was attending to something else I laid it on a table on which stood an electrical machine at some distance from its conductor and separated from it by a considerable space.
Now when one of the persons present touched accidentally and lightly the inner crural nerves of the frog with the point of a scalpel, all the muscles of the legs seemed to contract again and again as if they were affected by powerful cramps." He later showed that direct contact with the electrical generator or the ground through an electrical conductor would lead to a muscle contraction.
So, take a stroll down memory lane to remember all of our past Word of the Year selections.
library contents | ECG axis | ECG history | ECGs by Example Find out how electrocuting chickens (1775), getting laboratory assistants to put their hands in buckets of saline (1887), taking the ECG of a horses and then observing their open heart surgey (1912), induction of indiscriminate angina attacks (1931), and hypothermic dogs (1953) have helped to improve our understanding of the ECG as a clinical tool. William Gilbert, Physician to Queen Elizabeth I, President of the College of Physicians (before its Royal Charter), and creator of the 'magnetic philosophy' introduces the term 'electrica' for objects (insulators) that hold static electricity.
Pseudodoxia Epidemica: Or, enquiries Into Very Many Received Tenents, and Commonly Presumed Truths. He had worked on his ideas in the 1630s but had abandoned publication because of the persecution of other radical thinkers such as Galileo.
William Harvey had developed similar ideas but they were never published. De Homine (Treatise of Man); 1662: Moyardum & leffen, Leiden.
Swammerdam refines his experiments on muscle contraction and nerve conduction and demonstrated some to notable figures such as the Grand-Duke Cosimo of Tuscany who was visiting Swammerdam's father's house on the Oude Schans in Amsterdam.
One experiment suspended the muscle on a brass hook inside a glass tube with a water droplet to detect movement and 'irritated' the nerve with a silver wire.Browne calls the attractive force "Electricity, that is, a power to attract strawes or light bodies, and convert the needle freely placed".(He is also the first to use the word 'computer' - referring to people who compute calendars.) Browne, Sir Thomas. London The work of Rene Descartes, French Philosopher, is published (after his death) and explains human movement in terms of the complex mechanical interaction of threads, pores, passages and 'animal spirits'.He showed that the properties of the shock were similar to those from a Leyden jar in that it could be conducted or insulated with appropriate materials.The Torpedo fish and other species were widely known to deliver shocks and were often used in this way for therapeutic reasons.Later he found that the transfer could be achieved over greater distances by using brass wire.Tags: Adult Dating, affair dating, sex dating