These youngsters are aptly called protostars, since their cores are not yet hot to undergo nucleosynthesis, the process by which stars make heavier elements and release energy.
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The most promising thing about "An Ordinary Muslim" is the way its best moments seem to creep delicately out from under the rock of the author's determination to make heavier points.
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In fusion, lighter atoms are fused to make heavier atoms. The easiest fuels to do this with are isotopes of hydrogen.Azenti book on ICF, 2004, chapter 1 Generally these reactions take place inside a plasma. A plasma is a heated gas, where all the electrons have been stripped away; the gas has been fully ionized.
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Bigger, solid rubber, grooved "anti-shimmy" tail wheel tyres were introduced in March 1943 on all Typhoons from the 1,001st production aircraft, EK238. The new tyres helped to make heavier, bomb-laden Typhoons more manageable during ground manoeuvres. With the introduction of the bomb racks, small extensions were added to the cannon shell case ejector slots. These allowed the casings to drop clear of bombs or drop tanks suspended from the wing racks.Thomas and Shores 1988, p. 23.
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In sociology of science, the graphism thesis is a proposition of Bruno Latour that graphs are important in science. Research has shown that one can distinguish between hard science and soft science disciplines based on the level of graph use, so it can be argued that there is a correlation between scientificity and visuality. Furthermore, natural sciences publications appear to make heavier use of graphs than mathematical and social sciences. It has been claimed that an example of a discipline that uses graphs heavily but is not at all scientific is technical analysis.
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Initially, armour was used to defend both from ranged and close combat; even a fairly light shield could help defend against most slings and javelins, though high-strength bows and crossbows might penetrate common armour at very close range. Infantry armour had to compromise between protection and coverage, as a full suit of attack- proof armour would be too heavy to wear in combat. As firearms improved, armour for ranged defence had to be thicker and stronger. With the introduction of the heavy arquebus designed to pierce standard steel armour, it was proven easier to make heavier firearms than heavier armour; armour transitioned to be only for close combat purposes.
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In Germany, conscription can also be used if a village does not have a functioning fire service. Other unusual arrangements are seen in Denmark, where most fire services are run by private companies, and in France, where two of the country's fire services (the Paris Fire Brigade and the Marseille Naval Fire Battalion) are part of the armed forces; similarly, the national fire service of Monaco is part of the Military of Monaco and maintains an armoury of sidearms for use by firefighters during civil defence operations. Another way in which a firefighter's work varies around the world is the nature of firefighting equipment and tactics. For example, American fire departments make heavier use of aerial appliances, and are often split between engine and ladder companies.
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The internal heating within stars is so great that (after an initial phase of gravitational contraction) they ignite and sustain thermonuclear reaction of hydrogen (with itself) to form helium, and can make heavier elements (see Stellar nucleosynthesis). The Sun for example has a core temperature of 13,600,000 K. The more massive and older the stars are, the more internal heating they have. During the end of its lifecycle, the internal heating of a star increases dramatically, caused by the change of composition of the core as successive fuels for fusion are consumed, and the resulting contraction (accompanied by faster consumption of the remaining fuel). Depending upon the mass of the star, the core may become hot enough to fuse helium (forming carbon and oxygen and traces of heavier elements), and for sufficiently massive stars even large quantities of heavier elements.
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