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(61) Optical approaches also generate less heat and may eventually operate at speeds up to 1, 000 times faster than electronic approaches.

(62) This is an optical illusion in which the diagram of a skeleton cube appears to the observer in either of two orientations.

(63) Massive database management may be one area that could be dominated by optical technology.

(64) Holographic edge filters for Raman spectroscopy are now available from Optilas, the laser and optical specialist.

(65) In the optical system two slotted discs fitted to the end of the rollers.

(66) Optical aids prescribed by a low vision specialist will be described later in this section of the book.

(67) Even better, the full Coliseum will not be an optical illusion.

(68) The first questions Wien asked were related to the resolving power of optical instruments.

(69) The final chapter where the current commercial applications of optical fiber technology are reviewed is very informative.

(70) But lasers have snags: even with optical fibres, lasers can not reach every part of the body.

(71) I found the authors' expert discussion of the role of the electroweak force in promoting optical activity in biopolymers quite fascinating.

(72) Nikon use an optical zoom lens that has a 2.5x range.

(73) First, insects have compound eyes consisting of up to several thousand optical units called ommatidia, each with a single lens.

(74) Both have optical equipment that allows pilots to carry out nighttime bombing missions.

(75) To be seen clearly under an optical microscope, cell tissues often have to be stained to increase contrast.

(76) In their report, the prime minister's advisers did not come out against optical fibres altogether.

(77) This is called an optical illusion, which means that your eyes trick you into seeing something that is not really there.

(78) We have seen that it turns a state of arbitrary polarisation into one polarised perpendicular to the crystal's optical axis.

(79) Wilkinson's fourth case was that of an optical company,[www.Sentencedict.com] making spectacle lenses.

(80) It was probably an optical illusion, but the place seemed to be flying more eagles and swastikas than stars and stripes.

(81) For this reason the phase control signals to these upper base drives are often transmitted via a stage of optical isolation.

(82) Even knowing what he did, Kirov found it difficult to see how the optical illusion had been managed.

(83) Quantum, optical, chemical, analogue and evolutionary computers all offer opportunities to rethink completely the way we do computing.

(84) It is distinguished by an X-Windows/Motif interface, and its ability to integrate with optical character readers and document processors.

(85) One of the most innovative systems is that found in the optical mouse used with the Xerox Star business computer.

(86) Business machines accounted for 81.3 percent of net sales as demand for cameras and other optical products slipped, it said.

(87) However, the dimensions of the smallest circuit-parts will soon have shrunk beyond the limit that optical microscopes can resolve.

(88) Another mass-storage option gaining in popularity is the optical drive.

(89) IskraTEL specialists are currently laying optical fibre cables to connect the city's exchanges.

(90) The comparable figure, it said, for optical fibres was nearly ￡2000.