Two astigmatic image surfaces correspond to one object plane ; and these are in contact at the axis point ; on the one lie the focal lines of the first kind, on the other those of the second.

Both differ substantially from the Book of Common Prayer, though the latter includes in the Order Two form of the Holy Communion a very slight revision of the prayer book service, largely along the lines proposed for the 1928 Prayer Book.

Two lines are planned to Sudan and Cameroon from the capital, with construction expected to start in 2012.

Two rail lines exist, both originating in Phnom Penh and totaling about 612 kilometers of metre gauge single track.

Two nationalized shipping lines serve West Africa and Europe.

Two lines operated-the Demerara-Essequibo Railway, from Vreed en Hoop to Parika () and the Demerara-Berbice Railway, from Georgetown to Rosignol ().

Two of these six helices are separated by a loop that lines the pore and is the primary determinant of ion selectivity and conductance in this channel class and some others.

* lines 15. 33-92 – Two neighboring cities hated each other.

Two generations later, Richard Crashaw caught up the universal sentiment, when in his lines " Upon Bishop Andrewes ' Picture before his Sermons " he exclaims:

* November 2007: Human induced pluripotent stem cells: Two similar papers released by their respective journals prior to formal publication: in Cell by Kazutoshi Takahashi and Shinya Yamanaka, " Induction of pluripotent stem cells from adult human fibroblasts by defined factors ", and in Science by Junying Yu, et al., from the research group of James Thomson, " Induced pluripotent stem cell lines derived from human somatic cells ": pluripotent stem cells generated from mature human fibroblasts.

Two important examples are the contrast between the lines, " Quick, send in the clowns " and " Well, maybe next year.

Two lines are parallel if and only if their slopes are equal and they are not coincident or if they both are vertical and therefore have undefined slopes.

Two lines are perpendicular if the product of their slopes is − 1 or one has a slope of 0 ( a horizontal line ) and the other has an undefined slope ( a vertical line ).

Two air lines control the trailer unit.

Two broad gauge Pakistan Railways lines terminate near the border at Chaman in Balochistan near the Khojak Pass ; and at Torkham, the border town near the Khyber Pass.

Two other lines stem from Toruń, toward Malbork and Sierpc.

Two main trunk lines, the Main Line and Montauk Branches, spin off nine smaller branches.

Two chorus lines, one of four chorus girls and one of four chorus boys then took turns crossing the stage, the former group entering from stage right and the latter from stage left.

Two natural gas lines parallel the old petroleum line as far as Tbilisi, where they turn north across the Caucasus Mountains to join the grid of natural gas pipelines that supply cities throughout Russia and Eastern Europe.

Two simple NIDs, carrying six lines each, on the outside of a building

He was having trouble remembering his lines, a problem he had never previously encountered ( for this reason he was fired from Barbra Streisand's film The Mirror Has Two Faces ).

Two other lines are currently in the planning stage.

Two overt examples of pyramid schemes are a Chain Letter and a Ponzi Scheme, while a stock market bubble, particularly fueled by lines of credit ( margin accounts ) is a more subtle example.

Two miles ( 3 km ) behind the front lines, out of sight of the Confederates, the men of the USCT division were trained for two weeks on the plan.

Elements of classic screwball comedy often found in more recent films which might otherwise simply be classified as romantic comedies include the " battle of the sexes " ( Down with Love, How to Lose a Guy in 10 Days ), witty repartee ( Down with Love ), and the contrast between the wealthy and the middle class ( You've Got Mail, Two Weeks Notice ).

Edwin Schur and Hugo Bedau state in their book Victimless Crimes: Two sides of a Controversy “ some of these laws produce secondary crime, and all create new ‘ criminals ’ many of whom are otherwise law abiding citizens and people in authority .” This is an issue in the United States where prison rates keep increasing even though it already has the highest prison population out of any country.

Two dozen wooden objects bearing rongorongo inscriptions, some heavily weathered, burned, or otherwise damaged, were collected in the late 19th century and are now scattered in museums and private collections.

Two incidents spoiled this otherwise fine accomplishment for the British-Portuguese.

All references to The Two Gentlemen of Verona, unless otherwise specified, are taken from the Oxford Shakespeare ( Warren ), based on the First Folio text of 1623.

Two indigenous languages are spoken on the Torres Strait Islands: Kala Lagaw Ya / Kalaw Kawaw Ya / Kawalgau Ya / Muwalgau Ya / Kulkalgau Ya, and Meriam Mir, as well as Brokan, otherwise called Torres Strait Creole.

Two years later, in 1888, he secured passage of a new Oaths Act, which enshrined into law the right of affirmation for members of both Houses, as well as extending and clarifying the law as it related to witnesses in civil and criminal trials ( the Evidence Amendment Acts of 1869 and 1870 had proved unsatisfactory, though they had given relief to many who would otherwise have been disadvantaged ).

Two further, specifically Roman orders of architecture have their characteristic capitals, the sturdy and primitive Tuscan capitals, typically used in military buildings, similar to Greek Doric, but with fewer small moldings in its profile, and the invented Composite capitals not even mentioned by Vitruvius, which combined Ionic volutes and Corinthian acanthus capitals, in an order that was otherwise quite similar in proportions to the Corinthian, itself an order that Romans employed much more often than Greeks.

Two fatal accidents ( See Southern Airways Flight 932 November 14, 1970 and Southern Airways Flight 242 April 4, 1977 ) blighted the airline's otherwise excellent safety record.

In " Two for the Show ", this was a rare serious moment in an otherwise humorous revue.

Two otherwise securely isolated processes running on a single system with either cache memory or virtual memory can communicate by deliberately causing page faults and / or cache misses in one process, then monitoring the resulting changes in access times from the other.

Two systems of externally blown flaps were developed, both using the direct exhaust of wing-mounted engines on otherwise simple flaps.

Two spring-fed tributaries, the North and South Llano, stretch across the otherwise arid lands of West Texas before merging just east of the small town of Junction, Texas in Kimble County, forming the head of the Llano River proper.

To become a CUO, a cadet must have completed the Senior Leaders Course Module Two, otherwise known as the CUO / WO Course, often held either at a mid or end of year session.

* Two edges meeting at a corner are required to form an angle that is not straight ( 180 °); otherwise, the line segments will be considered parts of a single edge.

Two laps from home, he had to dive into the pits for oil, emerging 10 seconds behind Farina-which he rattled off on the next lap, catching Farina just a mile from home to win by several seconds after an otherwise dull race.

Two matrices can be multiplied when the number of columns in one is the same as the number of rows in the other ; otherwise, they are incompatible.

Two Irish Jews, Esther Steinberg and her infant son, are known to have been killed during the Holocaust, which otherwise did not substantially directly affect the Jews actually living in Ireland.

Two fragments of this work, otherwise lost, are retained in the book Yosif Ometz, by Joseph Hahn, Frankfurt am Main, 1723.

Two of these ports connected to the onboard NOAC, and were designed to fit NES and Famicom cartridges, respectively: despite otherwise featuring exactly the same hardware, North American and European NES game cartridges used a 72-pin design, resulting in slightly larger cartridges than the Famicom, which used a 60-pin design.

Two contestants were then chosen, based on that day's performance and how well they otherwise kept their 1970s facade.

Two women are portrayed by Norma Shearer to spotlight their very different social classes ; otherwise, nobody takes any notice of their identical appearance.

Two other kinds are a pair of unbalanced circles together with a connecting simple path, such that the two circles are either disjoint ( then the connecting path has one end in common with each circle and is otherwise disjoint from both ) or share just a single common vertex ( in this case the connecting path is that single vertex ).

Two types of balancing accounts exist to avoid fictitious profits and losses that might otherwise occur when cash is paid out not in the same accounting periods as expenses are recognized, because expenses are recognized when obligations are incurred regardless when cash is paid out according to the matching principle in accrual accounting.