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Charles Richard Drew (June 3, 1904 – April 1, 1950) was an American surgeon and medical researcher. He researched in the field of blood transfusions, developing improved techniques for blood storage, and applied his expert knowledge to developing large-scale blood banks early in World War II.
Christian James Lambertsen (May 15, 1917 – February 11, 2011) was an American medical researcher. He was a environmental medicine and diving medicine specialist who was principally responsible for developing the United States Navy frogmen's rebreathers in the early 1940s for underwater warfare.
A hygrometer is an instrument which measures the humidity of air or some other gas: that is, how much of it is water vapor. [1] Humidity measurement instruments usually rely on measurements of some other quantities, such as temperature, pressure, mass, and mechanical or electrical changes in a substance as moisture is absorbed.
1885 — Calender-Van Duesen invented the platinum resistance temperature device; 1887 — Richard Assmann invents the psychrometer (Wet and Dry Bulb Thermometers) 1892 — Henri-Louis Le Châtelier builds the first optical pyrometer; 1896 — Samuel Siegfried Karl Ritter von Basch introduced the Sphygmomanometer to measure blood pressure
Claude Shannon (1916–2016), founder of information theory and modern cryptography, invented Minivac 601, and co-invented the first wearable computer (with Edward O. Thorp) Ugo Cerletti (1877–1963), together with Lucio Bini (1908–1964), Italy – Electroconvulsive therapy; Leona Chalmers (c. 1937), U.S. – modern menstrual cup
1590 – Microscope was invented, which played a huge part in medical advancement; 1596 – Li Shizhen publishes Běncǎo Gāngmù or Compendium of Materia Medica; 1603 – Girolamo Fabrici studies leg veins and notices that they have valves which allow blood to flow only toward the heart; 1621 – 1676 – Richard Wiseman [36] [43] [59] [64] [65]
Smartphones may be used as medical tricorders; smartphone software and camera detect pulse from a fingertip using a technique similar to that of a pulse oximeters.. A medical tricorder is a handheld [1] portable [2] scanning device to be used by consumers [3] to self-diagnose medical conditions [4] within seconds [3] and take basic vital measurements.
Cooling more than a few degrees was no longer needed for heart surgery. Thereafter, the only surgeries that required stopping blood circulation to the whole body ("total circulatory arrest") were surgeries involving blood supply to the brain. The only heart surgeries that continued to require total circulatory arrest were repairs to the aortic ...