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Albert was later credited as a co-inventor of the X-ray microscope. [ 16 ] [ 17 ] [ 18 ] Joan's cousin, John C. Baez , is a mathematical physicist . [ 19 ] Her mother, Joan Chandos Baez (née Bridge), referred to as Joan Senior or "Big Joan", was born in Edinburgh, Scotland, the second daughter of an English Anglican priest who claimed to be ...
A typical chest x-ray delivers 20 μSv (2 mrem) of effective dose. [47] A dental x-ray delivers a dose of 5 to 10 μSv. [48] A CT scan delivers an effective dose to the whole body ranging from 1 to 20 mSv (100 to 2000 mrem). The average American receives about 3 mSv of diagnostic medical dose per year; countries with the lowest levels of health ...
Polyethylene glycol (PEG; / ˌ p ɒ l i ˈ ɛ θ əl ˌ iː n ˈ ɡ l aɪ ˌ k ɒ l,-ˈ ɛ θ ɪ l-,-ˌ k ɔː l /) is a polyether compound derived from petroleum with many applications, from industrial manufacturing to medicine.
The palimpsest was stored at the Walters Art Museum in Baltimore, Maryland, where it was subjected to a range of modern tests including the use of ultraviolet and X-ray light to read the overwritten text. [102] It has since returned to its anonymous owner. [103] [104] The treatises in the Archimedes Palimpsest include: On the Equilibrium of ...
In vertebrates, the circulatory system is a system of organs that includes the heart, blood vessels, and blood which is circulated throughout the body. [1] [2] It includes the cardiovascular system, or vascular system, that consists of the heart and blood vessels (from Greek kardia meaning heart, and Latin vascula meaning vessels).
Spinosaurus (/ ˌ s p aɪ n ə ˈ s ɔːr ə s /; lit. ' spine lizard ') is a genus of spinosaurid dinosaur that lived in what now is North Africa during the Cenomanian stage of the Late Cretaceous period, about 100 to 94 million years ago.
Map of 2,872 terrorist incidents in the contiguous United States from 1970 to 2017. KEY: Orange: 2001–2017; Green: 1970–2000 Terrorism deaths in the United States In the United States, a common definition of terrorism is the systematic or threatened use of violence in order to create a general climate of fear to intimidate a population or government and thereby effect political, religious ...