Two pendula with the same period fixed on a string act as pair of coupled oscillators.

Two oscillators that have the same frequency and different phases have a phase difference, and the oscillators are said to be out of phase with each other.

* Two main oscillators with analog-style FM and sync

* Two oscillators with sync & detune, one producing either a Square or Sawtooth waveform, with the other producing either a Pulse or Sawtooth waveform.

Two or three times, C. C. Burlingham came to lunch with us in Weston, that wonderful man who lived to be more than a hundred years old and whose birthplace had been my Wall Street suburb.

Two other alcohols whose uses are relatively widespread ( though not so much as those of methanol and ethanol ) are propanol and butanol.

Two other uncommon sources were promoted by Alexander: Anselm of Canterbury, whose writings had been ignored for almost a century gained an important advocate in Alexander and he used Anselm's works extensively in his teaching on Christology and soteriology ; and, Pseudo-Dionysius the Areopagite, whom Alexander used in his examination of the theology of Orders and ecclesiastical structures.

Examples include Lock, Stock and Two Smoking Barrels ( 1998 ) ( wherein the slang is translated via subtitles in one scene ); The Limey ( 1999 ); Sexy Beast ( 2000 ); Snatch ( 2000 ); Ocean's Eleven ( 2001 ); and Austin Powers in Goldmember ( 2002 ); It's All Gone Pete Tong ( 2004 ), after BBC radio disc jockey Pete Tong whose name is used in this context as rhyming slang for " wrong "; Green Street Hooligans ( 2005 ).

Two authors whose works are vital to an understanding of feminist theology are Mary Daly and Rosemary Radford Ruether.

Two men stay on, an invalid Cracker, Will Benteen, and Ashley Wilkes, whose spirit is broken.

Two of the male characters were played by women, whose shapely legs were put on display in a fashion that Gilbert later condemned.

Two Pacific Ocean populations are known to exist: one of not more than 130 individuals ( according to the most recent population assessment in 2008 ) whose migratory route is presumed to be between the Sea of Okhotsk and southern Korea, and a larger one with a population between 20, 000 and 22, 000 individuals in the eastern Pacific travelling between the waters off Alaska and Baja California Sur.

Two rural-style comedians, already well known in their native Canada, gained their first major U. S. exposure — Gordie Tapp and Don Harron ( whose KORN Radio character, newscaster Charlie Farquharson, had been a fixture of Canadian television since 1952 and later appeared on The Red Green Show ).

Two Lie groups are called isomorphic if there exists a bijective homomorphism between them whose inverse is also a homomorphism.

Two monosaccharides with equivalent molecular graphs ( same chain length and same carbonyl position ) may still be distinct stereoisomers, whose molecules differ in the three-dimensional arrangement of the bonds of certain atoms.

Two weeks after Soviet armies had entered the Baltic states, Berlin requested Finland to permit the transit of German troops, followed five weeks thereafter by Hitler's issuance of a secret directive " to take up the Russian problem, to think about war preparations ," a war whose objective would include establishment of a Baltic confederation.

Two miles ( 3 km ) to the south is the former village of Old Malden from which it gets its name, whose origins go back to Anglo-Saxon times, the name being Old English for Mæl + duna = the cross on the hill.

Two terms with the same variables raised to the same powers are called " similar terms " or " like terms ", and they can be combined, using the distributive law, into a single term whose coefficient is the sum of the coefficients of the terms that were combined.

where n is a natural number, the coefficients are elements of R, and X is a formal symbol, whose powers X < sup > i </ sup > are just placeholders for the corresponding coefficients a < sub > i </ sub >, so that the given formal expression is just a way to encode the sequence, where there is an n such that a < sub > i </ sub > = 0 for all i > n. Two polynomials sharing the same value of n are considered equal if and only if the sequences of their coefficients are equal ; furthermore any polynomial is equal to any polynomial with greater value of n obtained from it by adding terms in front whose coefficient is zero.

Two especially important figures in this period of British history are the prime ministers Gladstone and Disraeli, whose contrasting views changed the course of history.

Two failed riots in Mantua ( 1852 ) and Milan ( 1853 ) were a crippling blow for the Mazzinian organization, whose prestige never recovered.

Two feature films were made based on the series-the first was Till Death Us Do Part ( 1969 ), whose first half dealt with the younger Alf and Else during World War II, and whose second half dealt with all the Garnetts in the present day being moved from their East End slum to the New town of Hemel Hempstead, and the adjustments and changes that brought on the family.

Two confronted-animals | lionesses flank the central column, whose significance is much debated.

Two of Grace Kelly's uncles were prominent in the arts ; her father's eldest brother, Walter C. Kelly ( 1873 – 1939 ), was a vaudeville star whose nationally known act The Virginia Judge was filmed as a 1930 MGM short and a 1935 Paramount feature, and another older brother, George Kelly ( 1887 – 1974 ), estranged from the family due to his homosexuality, became renowned in the 1920s as a dramatist, screenwriter and director with a hit comedy-drama, The Show Off in 1924 – 25, and was awarded the 1926 Pulitzer Prize for Drama for his next play, Craig's Wife.

Two widely distributed commercial recordings by The Boston Camerata, " Simple Gifts " ( 1995 ) and " The Golden Harvest " ( 2000 ), were recorded at the Shaker community of Sabbathday Lake, Maine, with active cooperation from the surviving Shakers, whose singing can be heard at several points on both recordings.

These include Ulster Qualifying League Two side Letterkenny RFC, whose ground is named after Dave Gallaher, the captain of the 1905 New Zealand All Blacks touring team, who have since become known as The Originals.

Two organisms whose genes differ at even one locus ( position in their genome ) are said to have different genotypes.

A broadcasting organisation may broadcast several programs at the same time, through several channels ( frequencies ), for example BBC One and Two.

Two notes with fundamental frequencies in a ratio of any power of two ( e. g. half, twice, or four times ) are perceived as very similar.

Two new VHF frequencies, 9A and 12, have since been made available and are being used primarily for digital services ( e. g. ABC in capital cities ) but also for some new analogue services in regional areas.

Two optical resonators constructed from crystalline sapphire, controlling the frequencies of two lasers, were set at right angles within a helium cryostat.

Two signals are transmitted on one out of 40 ILS channels in the carrier frequency range between 108. 10 MHz and 111. 95 MHz ( with the 100 kHz first decimal digit always odd, so 108. 10, 108. 15, 108. 30, and so on are LOC frequencies but 108. 20, 108. 25, 108. 40, and so on are not ).

A broadcasting organization may broadcast several programs at the same time, through several channels ( frequencies ), for example BBC One and Two.

Two techniques are used at these frequencies: wave shaping with series resistors and embedding the traces between the two planes.

Two months later on May 18, 1990, CKSO and CIGM swapped frequencies.

The second Service Regulation affixed to this Convention designated 500 kHz as one of the standard frequencies to be employed by shore stations, specifying that " Two wave lengths, one of 300 meters Mc / s and the other of 600 meters, are authorized for general public service.

Two months later on May 18, 1990, CKSO and CIGM swapped frequencies.

Two radio frequencies represent binary 0 and 1.

Two fundamental calculations are central to population genetics: allele frequencies and genotype frequencies.

Two tones close in frequency generate a beat frequency at the difference of the frequencies, which is generally subsonic.

( Two stations with other formats on their regular frequencies, WLTW in the city and WVIP in New Rochelle, have country formats on HD2 and HD3, respectively.