Let Q be a nonsingular quadric surface bearing reguli Af and Af, and let **zg be a Af curve of order K on Q.

The class of the congruence is Af, since an arbitrary plane meets **zg in K points.

Since the complex of singular lines is of order K and since there is no complex of invariant lines, it follows from the formula Af that the order of the involution is Af.

Since C is rational, this correspondence has K coincidences, each of which implies a line of the pencil which meets its image.

For if such were the case, either the plane of the two lines would meet **zg in more than K points or, alternatively, the order of the image regulus of the pencil determined by the two lines would be too high.

The K factor, a term used to denote the rate of heat transmission through a material ( B.t.u./sq. ft. of material/hr./*0F./in. of thickness ) ranges from 0.24 to 0.28 for flexible urethane foams and from 0.12 to 0.16 for rigid urethane foams, depending upon the formulation, density, cell size, and nature of blowing agents used.

Table 1,, p. 394, shows a comparison of K factor ratings of a number of commercial insulating materials in common use, including two different types of rigid urethane foam.

The man most firmly at grips with the problem is the University of Minnesota's Physiologist Ancel Keys, 57, inventor of the wartime K ( for Keys ) ration and author of last year's bestselling Eat Well And Stay Well.

* in J. Barnes, M. Schofield, and R. R. K. Sorabji, eds .( 1975 ).

* Pfeiff, K. A., 1943.

The equilibrium constant K is an expression of the equilibrium concentrations of the molecules or the ions in solution.

The acid dissociation constant K < sub > a </ sub > is generally used in the context of acid-base reactions.

The stronger of two acids will have a higher K < sub > a </ sub > than the weaker acid ; the ratio of hydrogen ions to acid will be higher for the stronger acid as the stronger acid has a greater tendency to lose its proton.

Charles K. Smith argues that Swift ’ s rhetorical style persuades the reader to detest the speaker and pity the Irish.

To do this, Moseley measured the wavelengths of the innermost photon transitions ( K and L lines ) produced by the elements from aluminum ( Z = 13 ) to gold ( Z = 79 ) used as a series of movable anodic targets inside an x-ray tube.

Maj. Gen. Polk ignored the problems of Fort Henry and Fort Donelson when he took command and, after Johnston took command, at first refused to comply with Johnston's order to send an engineer, Lt. Joseph K. Dixon, to inspect the forts.

* 1846 – President James K. Polk asked for and received a Declaration of War against Mexico, starting the Mexican-American War

File: White House 1846. jpg | Earliest known photograph of the White House, taken c. 1846 by John Plumbe during the administration of James K. Polk.

These depictions include " Idun " ( statue, 1821 ) by H. E. Freund, " Idun " ( statue, 1843 ) and " Idun som bortrövas av jätten Tjasse i örnhamn " ( plaster statue, 1856 ) by C. G. Qvarnström, " Brage sittande vid harpan, Idun stående bakom honom " ( 1846 ) by Nils Blommér, " Iduns Rückkehr nach Valhalla " by C. Hansen ( resulting in an 1862 woodcut modeled on the painting by C. Hammer ), " Bragi und Idun, Balder und Nanna " ( drawing, 1882 ) by K. Ehrenberg, " Idun and the Apples " ( 1890 ) by J. Doyle Penrose, " Brita as Iduna " ( 1901 ) by Carl Larsson, " Loki och Idun " ( 1911 ) by John Bauer, " Idun " ( watercolor, 1905 ) by B. E. Ward, and " Idun " ( 1901 ) by E. Doepler.

under the system of supervision by town superintendents, Thomas W. potter served in 1844 and 1845, John C. Potter in 1846, Paul K. Davison in 1847 and 1848, Dr. Amos Allen from 1850 to 1853 and Daniel H. Davison from 1854 to 1856.

In 1846, Johann Strauss I was awarded the honorary title of K. K.

Schneidewin was also the founder of Philologus ( 1846 ), a journal devoted to classical learning, and dedicated to the memory of K. O. Müller.

The concept of an American Empire was first popularized during the presidency of James K. Polk who led the United States into the Mexican – American War of 1846, and the eventual annexation of the territories like California and the Gadsden purchase.

It served as the primary justification for U. S. President James K. Polk's declaration of war against Mexico in 1846, sparking the Mexican-American War.

* Bauer, K. Jack, The Mexican-American War, 1846 – 1848

* Bauer, K. Jack ," The Mexican-American War, 1846 – 1848 "

Lucy Clifford ( 2 August 1846 – 21 April 1929 ), better known as Mrs. W. K. Clifford, was a British novelist and journalist, and the wife of William Kingdon Clifford.

In 1846, President James K. Polk appointed him 20th Attorney General of the United States after his predecessor, John Y. Mason, returned to being Naval Secretary.

In 1846 Brewster was appointed commissioner by President James K. Polk to adjudicate the claims of the Cherokee against the U. S. federal government.

* The Mid-Victorian Generation, 1846 – 1886 — K. Theodore Hoppen ( 1998 )

In 1846, on vacating this appointment, he was made a K. C. B., and thenceforward was chiefly concerned with the East India Company's military academy at Addiscombe.

and cite additional work on the problem and its generalizations by C. Adams ( 1846 ), Adolphe Quidde ( 1850 ), K. H. Schellbach ( 1853 ), Arthur Cayley ( 1854, 1857, 1875 ), Alfred Clebsch ( 1857 ), P. Simons ( 1874 ), J. Casey ( 1888 ), Rouché and Comberousse ( 1900 ), H. F. Baker ( 1925 ), L. J. Rogers ( 1928 ), Angelo Procissi ( 1932 ), Jun Naito ( 1975 ), and D. G. Rogers ( 2005 ).

In 1846 President James K. Polk, an admirer and follower of Jackson, vetoed the Rivers and Harbors Bill on similar grounds.

* Barth, Christian K. ( 1846 ).

** K. F. Ledderhose, Das Leben Spangenbergs ( Heidelberg, 1846 )

Further stations opened at Daubhill and Chequerbent in 1846, along with Bradshaw Leach on the K & LJ.

On December 28, 1846, Iowa became the 29th state in the Union when President James K. Polk signed Iowa's admission bill into law.

President James K. Polk appointed him minister to Spain ( 1846 – 1849 ).

* 1909 – V. K. Gokak, Indian writer ( d. 1992 )

* 2012 – N. K. P. Salve, Indian politician ( b. 1921 )

:: K. Commodus ( 31 August 161 – 31 December 192 ), died without issue

* Bowman, Alan K. The Cambridge Ancient History: The High Empire, A. D. 70 – 192.

* 1915 – A. K. Hangal, Indian actor ( d. 2012 )

* 1980 – Matt Thiessen, Canadian-American singer-songwriter and guitarist ( Relient K )

* 1979 – Dave Douglas, American singer-songwriter and musician ( Relient K and Ace Troubleshooter )

* 1945 – Physicist Harry K. Daghlian, Jr. is fatally irradiated in a criticality accident during an experiment with the Demon core at Los Alamos National Laboratory.

Theorem: If K < sub > 1 </ sub > and K < sub > 2 </ sub > are the complexity functions relative to description languages L < sub > 1 </ sub > and L < sub > 2 </ sub >, then there is a constant c – which depends only on the languages L < sub > 1 </ sub > and L < sub > 2 </ sub > chosen – such that

* 1986 – Denice K., Danish porn actress, producer, and radio host

* 1962 – A. K. Fazlul Huq, Bengali statesman ( b. 1873 )

* 1992 – Gerard K. O ' Neill, American physicist ( b. 1927 )

* 2006 – T. K.

* Mann, Horace, K. The Lives of the Popes in the Early Middle Ages, Vol III: The Popes During the Carolingian Empire, 858 – 891.

* Mann, Horace, K. The Lives of the Popes in the Early Middle Ages, Vol IV: The Popes in the Days of Feudal Anarchy, 891 – 999.

* 1963 – Tõnu Trubetsky, Estonian singer, musician, and director ( Vennaskond and J. M. K. E.

Compressing boron above 160 GPa produces a boron phase with an as yet unknown structure, and this phase is a superconductor at temperatures 6 – 12 K.

Between 70 K and room temperature, berkelium behaves as a Curie – Weiss paramagnetic material with an effective magnetic moment of 9. 69 Bohr magnetons ( µ < sub > B </ sub >) and a Curie temperature of 101 K. This magnetic moment is almost equal to the theoretical value of 9. 72 µ < sub > B </ sub > calculated within the simple atomic L-S coupling model.

* Mathews, L. K. “ Benjamin Franklin ’ s Plans for a Colonial Union, 1750 – 1775 .” American Political Science Review 8 ( August 1914 ): 393 – 412.

Considerable research into biological warfare was undertaken throughout the Cold War era ( 1947 – 1991 ) by the U. S., U. K. and U. S. S. R., and probably other major nations as well, although it is generally believed that such weapons were never used.