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William Roark Ratliff (born August 16, 1936) is an American politician and engineer who served as a member of the Texas Senate from 1988 to 2004. [1] Between 2000 and 2003 he served as the 40th lieutenant governor of Texas, after previous Lieutenant Governor Rick Perry replaced George W. Bush, who resigned to become president of the United States.
Sirius B, which is a white dwarf, can be seen as a faint point of light to the lower left of the much brighter Sirius A. A white dwarf is a stellar core remnant composed mostly of electron-degenerate matter. A white dwarf is very dense: in an Earth sized volume, it packs a mass that is comparable to the Sun.
Carbon detonation or carbon deflagration is the violent reignition of thermonuclear fusion in a white dwarf star that was previously slowly cooling. It involves a runaway thermonuclear process which spreads through the white dwarf in a matter of seconds, producing a type Ia supernova which releases an immense amount of energy as the star is blown apart.
The oath or affirmation of office for the president was established in the Constitution of the Republic of Texas and was mandatory for a president 'before entering upon the duties' of the office. The wording, very similar to that of the United States' version , was prescribed by Article VI of the Constitution, as follows: [ 1 ]
Texas portal; Texas has had chief executives with the titles of governors and presidents since 1691. These were under the flags of: (New) Spain (governors, 1691–1821) Mexico (governors, 1821–1836) Republic of Texas (presidents, 1836–1846) United States of America (governors, 1846–1861 and 1865–present)
In a degenerate gas, all quantum states are filled up to the Fermi energy. Most stars are supported against their own gravitation by normal thermal gas pressure, while in white dwarf stars the supporting force comes from the degeneracy pressure of the electron gas in their interior. In neutron stars, the degenerate particles are neutrons.
Lorene Lane Rogers (April 3, 1914 – January 11, 2009) was an American biochemist and educator who served as the 21st President of the University of Texas at Austin. [1] She has been described as the first woman in the United States to lead a major research university.
The Type Ia supernova leaves no compact remnant, but the whole mass of the former white dwarf dissipates through space. The theory of this type of supernova is similar to that of novae, in which a white dwarf accretes matter more slowly and does not approach the Chandrasekhar limit. In the case of a nova, the infalling matter causes a hydrogen ...