موسوعة العلمـاء و المخترعين .. العلمـاء بالترتيب حسب اسم الشهرة .. الحرف ٥_ك

Encyclopedia of Scientists and Inventors.. Scientists in order according to their nickname.. The letter 5_k

⏹ Karcher Atanasios
Kircher Athnanasius

German mathematician (1601 - 1680)
Kircher began studying theology, then taught philosophy in Wurzburg, and then worked as a professor of mathematics in Rome.
Karcher wrote a number of books on the science of sound, invented a wind musical instrument, and elaborated an explanation for the experience of the bell and bell (to prove that air is the medium that transmits sound), but he reached wrong conclusions, and Karcher invented the magic lantern (laterna magica), then turned to historical studies and archeology.

⏹ کRNSTAT Axel Frederick, Baron
Cronstedt, Axel Fredrik Baron

Swedish metal plumber (1722 - 1765)
Krenstadt studied mathematics and physical sciences, then worked as a foundry worker in the Mining Office. Cronstadt discovered nickel metal and noted its weak magnetic susceptibility. He also discovered a type of zeolite (a silicate mineral used to remove water hardness) and prepared a classification of widely used minerals.

⏹ Crog, August Steinberg window
Krogh, Schack August Steenberg

Danish physiologist (functions of organs) (1874-1949) ·
Krug was educated in London, Lund, Göttingen and Budapest. Then he worked as a professor of zoo-physiology in Copenhagen. Krug stood out in his research on capillary properties and osmosis • He won the Nobel Prize for Medicine in 1920 for his discovery of the organization of the motor mechanism of capillaries - his most prominent book is a book entitled: The anatomy and physiology of capillaries
It was published in 1923.

⏹ Crawford, Adair

Irish physician (1748-1795)
Crawford was educated in Glasgow, then worked as a physician at St Thomas' Hospital and taught chemistry at Woolwich.
Crawford is best known for his studies of animal heat. His name remains stuck in the minds because he indicated the presence of a new substance in a mineral located in Strontian near Argyllshire. Davy was able to isolate this substance and called it Strontium.

⏹ Crookes, Sir William
Crookes, Sir William

English chemist and physicist (1832-1919)
Crookes was educated at the Royal College of Chemistry in London, then worked as a professor of chemistry at Chester College, and was chosen as a Fellow of the Royal Society. He was also chosen as President of the British Association.
Crookes invented the vacuum tube named after him « Crookes tube , for electrical discharge units in the vacuum . He was the first to accurately describe the cathode rays, which are fast-moving particles charged with a mechanical charge.
Crookes also invented a radiometer, a device for measuring radiation (dadiometer). He discovered the element “thallium” as a result of his examination of “Fraunhofer lines, in the spectrum. He also invented a device for detecting alpha radiation in a visual way, Spinthariscope. He believed in spirituality and said that telogenism (distant friendly communication) is an exchange of waves between brains.

⏹ Kraepelin, Emil

German psychiatrist (1856 - 1926)
Kraepelin worked as a professor of psychotherapy in «Munich» and was the first to conduct psychological studies on mental illness. He divided these diseases into two parts: depression and depression. (manic depression).
Schizophrenia or dementia praecox
However, such a division proved incorrect. Kraepelin has studied brain stress and the mental effects of alcohol and has reached valuable results.

⏹ Kristiansen, Kristian
Christiansen, Christian

Danish physicist (1843 - 1917)
Christiansen worked as a professor of physics in Copenhagen in 1886, after receiving his education there. He had conducted many researches and physical experiments. He also investigated Sellmeier's theory of anomalous dispersion.
This is done by doing experiments on the refractive index of fuchsine (also known as fuchsine and magenta).