Czech Republic – Czechoslovakia 100th Anniversary of Death of J. E. Purkyne 1969 Silver 25 Korun 33mm (16.00 grams) 0.500 Silver (0.2572 oz. ASW) Reference: KM# 66 25 REPUBLIKA ČESKOSLOVENSKÁ SOCIALISTICKÁ, Czech lion with socialist shield within shield. JAN EVANGELISTA PURKYNĚ 1869 – 1969, Purkyne facing right. Edge Lettering: FYSIOLOG, FILOSOF, BUDITEL, BÁSNÍK
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Jan Evangelista Purkyně; also written Johann Evangelist Purkinje (17 or 18 December 1787 – 28 July 1869) was a Czech anatomist and physiologist. In 1839, he coined the term ‘protoplasm’ for the fluid substance of a cell. He was one of the best known scientists of his time. Such was his fame that when people from outside Europe wrote letters to him, all that they needed to put as the address was “Purkyně, Europe”.
Purkyně was born in the Kingdom of Bohemia (then part of the Austrian monarchy, now Czech Republic). After completing senior high school in 1804, Purkyně joined the Piarists order as a monk but subsequently left “to deal more freely with science.” In 1818, he graduated from Charles University in Prague with a degree in medicine, where he was appointed a Professor of Physiology. He discovered the Purkinje effect, the human eye’s much reduced sensitivity to dim red light compared to dim blue light, and published in 1823 description of several entoptic phenomenons. He published two volumes, Observations and Experiments Investigating the Physiology of Senses and New Subjective Reports about Vision, which contributed to the emergence of the science of experimental psychology. He created the world’s first Department of Physiology at the University of Breslau in Prussia (now Wrocław, Poland) in 1839 and the world’s second official physiology laboratory in 1842. Here he was a founder of the Literary-Slav Society.
In 1850, he accepted the Physiology chair at Prague Medical Faculty, a position he held until his death.
He is best known for his 1837 discovery of Purkinje cells, large neurons with many branching dendrites found in the cerebellum. He is also known for his discovery in 1839 of Purkinje fibres, the fibrous tissue that conducts electrical impulses from the atrioventricular node to all parts of the ventricles of the heart. Other discoveries include Purkinje images, reflections of objects from structures of the eye, and the Purkinje shift, the change in the brightness of red and blue colours as light intensity decreases gradually at dusk. Purkyně also introduced the scientific terms plasma (for the component of blood left when the suspended cells have been removed) and protoplasm (the substance found inside cells.)
Purkyně was the first to use a microtome to make thin slices of tissue for microscopic examination and was among the first to use an improved version of the compound microscope. He described the effects of camphor, opium, belladonna and turpentine on humans in 1829. He also experimented with nutmeg that same year, when he “washed down three ground nutmegs with a glass of wine and experienced headaches, nausea, euphoria, and hallucinations that lasted several days”, which remain a good description of today’s average nutmeg binge. Purkyně discovered sweat glands in 1833 and published a thesis that recognised 9 principal configuration groups of fingerprints in 1823. Purkyně was also the first to describe and illustrate in 1838 the intracytoplasmic pigment neuromelanin in the substantia nigra.
Purkyně also recognised the importance of the work of Eadweard Muybridge. Purkyně constructed his own version of a stroboscope which he called forolyt. He put nine photos of him shot from various sides to the disc and entertained his grandchildren by showing them how he, an old and famous professor, is turning around at great speed.
The Czech Republic also known by its short-form name, Czechia, is a landlocked country in Central Europe bordered by Germany to the west, Austria to the south, Slovakia to the east and Poland to the northeast. The Czech Republic covers an area of 78,866 square kilometres (30,450 sq mi) with a mostly temperate continental climate and oceanic climate. It is a unitary parliamentary republic, with 10.6 million inhabitants; its capital and largest city is Prague, with 1.3 million residents. Other major cities are Brno, Ostrava, Olomouc and Pilsen. The Czech Republic is a member of the European Union (EU), NATO, the OECD, the United Nations, the OSCE, and the Council of Europe.
It is a developed country with an advanced, high income export-oriented social market economy based in services, manufacturing and innovation. The UNDP ranks the country 14th in inequality-adjusted human development. The Czech Republic is a welfare state with a “continental” European social model, a universal health care system, tuition-free university education and is ranked 14th in the Human Capital Index. It ranks as the 6th safest or most peaceful country and is one of the most non-religious countries in the world, while achieving strong performance in democratic governance.
<img src="https://upload.wikimedia.org/wikipedia/commons/thumb/e/ed/Coat_of_arms_of_the_Czech_Republic.svg/85px-Coat_of_arms_of_the_Czech_Republic.svg.png" align="left" the="" czech="" republic="" includes="" historical="" territories="" of="" bohemia,="" moravia,="" and="" silesia.="" state="" was="" formed="" in="" late="" 9th="" century="" as="" duchy="" bohemia="" under="" great="" moravian="" empire.="" after="" fall="" empire="" 907,="" centre="" power="" transferred="" from="" moravia="" to="" přemyslid="" dynasty.="" 1002,="" formally="" recognized="" an="" imperial="" holy="" roman="" along="" with="" kingdom="" germany,="" burgundy,="" italy,="" numerous="" other="" territories,="" becoming="" 1198="" reaching="" its="" greatest="" territorial="" extent="" 14th="" century.="" beside="" itself,="" king="" ruled="" lands="" bohemian="" crown,="" holding="" a="" vote="" election="" emperor;="" prague="" seat="" periods="" between="" 17th="" hussite="" wars="" 15th="" driven="" by="" protestant="" reformation,="" faced="" economic="" embargoes="" defeated="" five="" consecutive="" crusades="" proclaimed="" leaders="" catholic="" church.=""
Following the Battle of Mohács in 1526, the whole Crown of Bohemia was gradually integrated into the Habsburg Monarchy alongside the Archduchy of Austria and the Kingdom of Hungary. The Protestant Bohemian Revolt (1618-20) against the Catholic Habsburgs led to the Thirty Years’ War. After the Battle of the White Mountain, the Habsburgs consolidated their rule, eradicated Protestantism and reimposed Catholicism, and also adopted a policy of gradual Germanization. This contributed to the anti-Habsburg sentiment. A long history of resentment of the Catholic Church followed and still continues. With the dissolution of the Holy Roman Empire in 1806, the Bohemian Kingdom became part of the German Confederation 1815-1866 as part of Austrian Empire (1804 to 1867) and the Czech language experienced a revival as a consequence of widespread romantic nationalism. In the 19th century, the Czech lands became the industrial powerhouse of the monarchy and were subsequently the core of the Republic of Czechoslovakia, which was formed in 1918 following the collapse of the Austro-Hungarian Empire after World War I.
Czechoslovakia remained the only democracy in this part of Europe in the interwar period. However, the Czech part of Czechoslovakia was occupied by Germany in World War II, while the Slovak region became the Slovak Republic; Czechoslovakia was liberated in 1945 by the armies of the Soviet Union and the United States. Most of the three millions of the German-speaking minority were expelled following the war. The Communist Party of Czechoslovakia won the 1946 elections and after the 1948 coup d’état, Czechoslovakia became a one-party communist state under Soviet influence. In 1968, increasing dissatisfaction with the regime culminated in a reform movement known as the Prague Spring, which ended in a Soviet-led invasion. Czechoslovakia remained occupied until the 1989 Velvet Revolution, when the communist regime collapsed and market economy was reintroduced. On 1 January 1993, Czechoslovakia peacefully dissolved, with its constituent states becoming the independent states of the Czech Republic and Slovakia. The Czech Republic joined NATO in 1999 and the EU in 2004.
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