Normal sparking from an electrical outlet. When that power is suddenly diverted to an appliance, there will be a quick draw on the available power, causing a brief spark. Once the electrons are flowing freely, there should be no reason for a spark to form.
Alfred Kastler (3 May 1902 â 7 January 1984) was a French physicist, and Nobel Prize laureate.
Sir Hans Krebs came to the University of Sheffield as Lecturer in Pharmacology in 1935. He was a German Jewish refugee who had already discovered the ornithine (urea) cycle at Freiburg before being forced to flee the country in 1933.