Information: - A microscope (from the , "mikros", "small" and , "skopein", "to look" or "see") is an instrument used to see objects that are too small for the naked eye. The science of investigating small objects using such an instrument is called microscopy. Microscopic means invisible to the eye unless aided by a microscope. - The Helmholtz Association of German Research Centres is the largest scientific organisation in Germany. It is a union of 18 scientific-technical and biological-medical research centers. The official mission of the Association is "solving the grand challenges of science, society and industry". Scientists at Helmholtz therefore focus research on complex systems which affect human life and the environment. The namesake of the association is the German physiologist and physicist Hermann von Helmholtz. - A research center is a facility or building dedicated to research, commonly with the focus on a specific area. There are over 14,000 research centers in the United States. Centers apply varied disciplines including basic research and applied research in addition to non traditional techniques. However, a research center should not be confused with a research institute. Additionally, today many universities are establishing research centers to conduct a specific research or education activity. Over a hundred of research centers can be established in one university. This number certainly differs from a university to a university, but most of the research centers there do bring something to the scientific table. - RWTH Aachen University or Rheinisch-Westfalische Technische Hochschule Aachen is a research university located in Aachen, North Rhine-Westphalia, Germany. With more than 42,000 students enrolled in 144 study programs, it is the largest technical university in Germany. - Ernst August Friedrich Ruska (25 December 1906 27 May 1988) was a German physicist who won the Nobel Prize in Physics in 1986 for his work in electron optics, including the design of the first electron microscope. - Germany, officially the Federal Republic of Germany, is a federal parliamentary republic in central-western Europe. It includes 16 constituent states, covers an area of , and has a largely temperate seasonal climate. With about 82 million inhabitants, Germany is the most populous member state of the European Union. After the United States, it is the second most popular immigration destination in the world. Germany's capital and largest metropolis is Berlin. Other major cities include Hamburg, Munich, Cologne, Frankfurt, Stuttgart and Dusseldorf. - The Nobel Prize in Physics is a yearly award given by the Royal Swedish Academy of Sciences for those who conferred the most outstanding contributions for mankind in the field of physics. It is one of the five Nobel Prizes established by the will of Alfred Nobel in 1895 and awarded since 1901; the others being the Nobel Prize in Chemistry, Nobel Prize in Literature, Nobel Peace Prize, and Nobel Prize in Physiology or Medicine. - Hermann Ludwig Ferdinand von Helmholtz (August 31, 1821 September 8, 1894) was a German physician and physicist who made significant contributions in several scientific fields. The largest German association of research institutions, the Helmholtz Association, is named after him. - Electron optics is a mathematical framework for the calculation of particle paths along given electrostatic or magnetostatic fields. The term "optics" is used because a charged particle beam can be manipulated using magnetic or electrostatic lenses in a similar fashion to the manipulation of a light beam with optical lenses. - A research university is a university that expects all its tenured and tenure-track faculty to continuously engage in research, as opposed to merely requiring it as a condition of an initial appointment or tenure. Such universities can be recognized by their strong focus on innovative research and the prestige of their brand names. On the one hand, research universities strive to recruit faculty who are the most brilliant minds in their disciplines in the world, and their students enjoy the opportunity to learn from such experts. On the other hand, new students are often disappointed to realize their undergraduate courses at research universities are overly academic and fail to provide vocational training with immediate "real world" applications; but many employers value degrees from research universities because they know that such coursework develops fundamental skills like critical thinking. - North Rhine-Westphalia (, commonly shortened to NRW) is the most populous state of Germany, with a population of approximately 18 million, and the fourth largest by area. Its capital is Dusseldorf; the most populous city is Cologne. Four of Germany's ten largest citiesCologne, Dusseldorf, Dortmund, and Essenare located within the state, as well as the largest metropolitan area on the European continent, Rhine-Ruhr. - The Ernst Ruska - Centre ( ER - C ) for Microscopy and Spectroscopy with Electrons is a German research establishment conjointly operated by the Julich Research Centre and RWTH Aachen University on a pari passu basis . The facility , which also offers user services to external research groups , is located on the campus of Research Centre Julich belonging to the Helmholtz Association of German Research Centres . The ER - C 's main purposes are fundamental research in high - resolution transmission electron microscopy method development as well as respective applications coming along with topical problems in solid state research and energy research . For theses purposes the ER - C runs several state - of - the - art transmission electron microscopes and develops customed software solutions to be used for e.g. for the exit wave retrieval purposes or the measurement of higher - order lens aberrations . The ER - C was founded in Aachen on 27 January 2004 by means of a contract signed by the chairman of Forschungszentrum Julich Joachim Treusch and RWTH Aachen University 's rector Burkhard Rauhut . The centre was inaugurated on 18 May 2006 in presence of members of the Ernst Ruska family as well as representatives of the international electron microscopy community . - Aachen or Bad Aachen, traditionally known in English and French as Aix-la-Chapelle , is a spa and border city in North Rhine-Westphalia, Germany. Aachen was the preferred residence of Charlemagne, and, from 936 to 1531, the place where 31 Holy Roman Emperors were crowned Kings of the Germans. - An electron microscope is a microscope that uses a beam of accelerated electrons as a source of illumination. As the wavelength of an electron can be up to 100,000 times shorter than that of visible light photons, electron microscopes have a higher resolving power than light microscopes and can reveal the structure of smaller objects. A transmission electron microscope can achieve better than 50pm resolution and magnifications of up to about 10,000,000x whereas most light microscopes are limited by diffraction to about 200nm resolution and useful magnifications below 2000x. After reading the paragraphs above, we are interested in knowing the entity with which 'ernst ruska-centre' exhibits the relationship of 'instance of'. Find the answer from the choices below. Choices: - 25 - academy - academy of sciences - area - association - august - award - border - building - city - condition - destination - electron - facility - field - five - framework - hochschule - hundred - illumination - institute - instrument - limited - may - member - metropolitan - microscope - mission - nobel peace prize - nobel prize - number - official - particle - population - prize - republic - research - research center - research institute - research university - society - spa - state - state of germany - table - technische hochschule - ten - term - training - university - will - work
Answer:
research institute