Two types of light source were used, a thousand watt projection lamp and an AH6 high pressure mercury arc.

Two major types of fully distributed cost analysis

Two types of punched cards used to program the machine.

Two F-14 Tomcats of the Islamic Republic of Iran Air Force | IRIAF, armed with different types of air-to-air missiles, including AIM-54 Phoenixes.

Two types of bone can be identified microscopically according to the pattern of collagen forming the osteoid ( collagenous support tissue of type I collagen embedded in glycosaminoglycan gel ):

* Brake equipment: Two main types are used: brake shoes that are pressed against the tread of the wheel, and disc brakes and pads.

Two common types of employee crime exist: embezzlement and sabotage.

Two types of crystallographic defects.

Two liquids can form different types of emulsions.

Two main types of filter media are employed in the chemical laboratory — surface filter, a solid sieve which traps the solid particles, with or without the aid of filter paper ( e. g. Büchner funnel, Belt filter, Rotary vacuum-drum filter, Cross-flow filters, Screen filter ), and a depth filter, a bed of granular material which retains the solid particles as it passes ( e. g. sand filter ).

Two common types of engineered design for anchoring floating structures include tension-leg and catenary loose mooring systems.

Two major types of hydrological models can be distinguished:

Two ’ s complement arithmetic is convenient because there is a perfect one-to-one correspondence between representations and values ( in particular, no separate + 0 and − 0 ), and because addition, subtraction and multiplication do not need to distinguish between signed and unsigned types.

Two types of ink were prevalent at the time: the Greek and Roman writing ink ( soot, glue, and water ) and the 12th century variety composed of ferrous sulfate, gall, gum, and water.

Two types of climate are found in Jamaica.

Two courses of red yarn illustrating two basic fabric types.

Two dwarf species, named Orcinus nanus and Orcinus glacialis, were described during the 1980s by Soviet researchers, but most cetacean researchers are skeptical about their status, and linking these directly to the types described below is difficult.

Two types of coprocessors were defined, the floating point unit ( MC68881 or MC68882 FPU ) and the paged memory management unit ( MC68851 PMMU ).

Two other types of acquired resistance rarely seen include the production of drug-inactivating enzymes ( esterases or kinases ), as well as the production of active ATP-dependent efflux proteins that transport the drug outside of the cell.

Two different types of cost are important in microeconomics: marginal cost, and fixed cost.

Two types of inland river barges were generally available in Europe for use in Sea Lion: the peniche, which was 38. 5 metres long and carried 360 tons of cargo, and the Kampine, which was 50 metres long and carried 620 tons of cargo.

Two French voice types, premiere dugazon and deuxieme dugazon, were named after successive stages in the career of Louise-Rosalie Lefebvre ( Mme.

Two types of ring are used: the upper rings have solid faces and provide gas sealing ; lower rings have narrow edges and a U-shaped profile, to act as oil scrapers.

Two types of deviations from linearity may be considered here.

" Two important types of future interests are:

Two years later, in 1933, Ruska built an electron microscope that exceeded the resolution attainable with an optical ( lens ) microscope.

Two of the primary methods for identifying rocks in the laboratory are through optical microscopy and by using an electron microprobe.

* Two or more mirrors that form an optical resonator.

Two compounds that are enantiomers of each other have the same physical properties, except for the direction in which they rotate polarized light and how they interact with different optical isomers of other compounds.

Two gyrotropic materials with reversed rotation directions of the two principal polarizations, corresponding to complex-conjugate ε tensors for lossless media, are called optical isomers.

Near the source of the leat there is a curious optical illusion ; viewed from the opposite bank of the West Dart River between Two Bridges and Wistman's Wood, it appears to flow uphill.

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

Two methods for storing information on the film were employed: " magnetic IX " and " optical IX ".

* Two photon optical chip

Two other stars, located at angular separations of 44 and 370 arcseconds, are likely optical companions that are not physically associated with the system.

Two streams of stars seem to cascade down like waterfalls due to compositing | optical effects.

Two of the larger factors are: quantum efficiency, which indicates how well incident optical photons are absorbed and then used to generate primary charge carriers ; and total leakage current, which is the sum of the dark current and photocurrent and noise.

Two sets of independent follow-up spectroscopy data suggested that this was again another optical transient rather than a supernova, possibly an outbursting Luminous Blue Variable star according to one spectrum, as earlier predicted from the nature of the candidate mid-infrared progenitor.

Two scientific awards have been created in his honour ; the David Bates Medal of the European Geophysical Society is awarded yearly for outstanding contributions to planetary and solar system science, and the Institute of Physics have the David Bates Prize, awarded in even dated years, for distinguished achievement in atomic, molecular, optical and plasma physics.

Two special cases of the Kerr effect are normally considered, these being the Kerr electro-optic effect, or DC Kerr effect, and the optical Kerr effect, or AC Kerr effect.

It is equipped with a number of instruments, including the Two Degree Field facility ( 2dF ), a robotic optical fibre positioner for obtaining spectroscopy of up to 400 objects over a 2 ° field of view simultaneously ; the University College London Échelle Spectrograph ( UCLES ), a high-resolution optical spectrograph which has been used to discover many extrasolar planets ; and IRIS2, a wide-field infrared camera and spectrograph.

Two of the optical telescope domes can be seen on the roof.

Two gyrotropic materials with reversed rotation directions of the two principal polarizations are called optical isomers.

Two different types of proximity fuze can be fitted: the standard Strizh ( Swift ) optical fuse, which can be replaced with a Kolibri active radar fuse.

Two CCD star sensors were used for optical position sensing of guide stars and attitude determination of the spacecraft.

Two mirror images of a chiral molecule are called enantiomers or optical isomers.

Two low frequency control tones were printed on the film's mono optical or magnetic track ; from the projector, the tones entered a control box in the projection booth, which fed low frequency pseudorandom noise to 1, 600 watt BGW 750 audio amplifiers driving the speakers.

Two such points are called a stigmatic pair of the optical system.