Nature, Volume 47Sir Norman Lockyer Macmillan Journals Limited, 1893 - Electronic journals |
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Page 12
... lens . The movement of dry air past the eye , as provided by forced air heating or air conditioning systems , can greatly exacerbate these low- humidity effects . Low humidity ( 15-20 percent or less relative ... LENSES 12 Lens Wear Time.
... lens . The movement of dry air past the eye , as provided by forced air heating or air conditioning systems , can greatly exacerbate these low- humidity effects . Low humidity ( 15-20 percent or less relative ... LENSES 12 Lens Wear Time.
Page 39
... Lens Inc .-- that they first manufactured a button in May 6 , 1976 and a lens from that button on July 8 , 1976. He concluded that the " human tests were done only on the first polymer " -- not the polymer ultimately ap- proved ...
... Lens Inc .-- that they first manufactured a button in May 6 , 1976 and a lens from that button on July 8 , 1976. He concluded that the " human tests were done only on the first polymer " -- not the polymer ultimately ap- proved ...
Page 43
Allen Mann. CHAPTER 5 ZOOM LENSES 5.1 TYPES OF ZOOM LENSES There are two types of zoom lenses , optically compensated and mechanically compensated . 5.1.1 Optically compensated zoom lens In an optically compensated zoom lens , two or ...
Allen Mann. CHAPTER 5 ZOOM LENSES 5.1 TYPES OF ZOOM LENSES There are two types of zoom lenses , optically compensated and mechanically compensated . 5.1.1 Optically compensated zoom lens In an optically compensated zoom lens , two or ...
Page 89
... lens and the anterior surface of the eye, which serves as a fluid reservoir during lens wear. This fluid reservoir can vary widely in depth [5], and accumulation of debris in the post-lens fluid reservoir has been observed. Decentration ...
... lens and the anterior surface of the eye, which serves as a fluid reservoir during lens wear. This fluid reservoir can vary widely in depth [5], and accumulation of debris in the post-lens fluid reservoir has been observed. Decentration ...
Page 165
... lens consisting of a rigid gas-permeable lens or the like made of PMMA or a SiMA/MMA polymer. Furthermore, it is also possible to use a two material contact lens having the features of both hard-type and soft-type lenses, and it is also ...
... lens consisting of a rigid gas-permeable lens or the like made of PMMA or a SiMA/MMA polymer. Furthermore, it is also possible to use a two material contact lens having the features of both hard-type and soft-type lenses, and it is also ...
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Page viii - PROCESSES, AND COLLATERAL INFORMATION IN THE ARTS, MANUFACTURES, PROFESSIONS, AND TRADES, INCLUDING MEDICINE, PHARMACY, AND DOMESTIC ECONOMY ; designed as a General Book of Reference for the Manufacturer, Tradesman, Amateur, and Heads of Families.
Page 145 - FELKIN, HM— Technical Education in a Saxon Town. Published for the City and Guilds of London Institute for the Advancement of Technical Education.
Page 111 - I. By Sir W. THOMSON, LL.D., DCL, FRS, Professor of Natural Philosophy in the University of Glasgow...
Page 120 - That the magnitudes of these standards should be determined on the electro-magnetic system of measurement with reference to the centimetre as unit of length, the gramme as unit of mass, and the second as unit of time, and that by the terms centimetre and gramme are meant the standards of those denominations deposited with the Board of Trade. 3. That the standard of electrical resistance should be denominated the ohm, and should have the value 1,000,000,000 in terms of the centimetre and second. 4....
Page 58 - The purpose of this laboratory is to afford opportunities for the study and observation of the development, anatomy, and habits of common types of marine animals, under suitable direction and advice.
Page xxix - Is it to be understood from all this that a chlorine compound which is not produced by energetic union — say an endothermic compound like...
Page 89 - Wright (Lewis). — LIGHT ; A COURSE OF EXPERIMENTAL OPTICS, CHIEFLY WITH THE LANTERN. By LEWIS WRIGHT. With nearly 200 Engravings and Coloured Plates. Crown 8vo. 7*. 6d. ASTRONOMY. Airy. — POPULAR ASTRONOMY. With Illustrations by Sir GB AIRY, KCB, formerly Astronomer-Royal.
Page xl - I would commend to your consideration the propriety of transferring it to the funds of the Imperial Institute of the United Kingdom, the Colonies, and India...
Page 26 - A New and Enlarged Edition. Constructed from the best materials, and embodying the results of the most recent investigations, accompanied by a complete INDEX OF PLACES, in which the proper quantities are given by T.
Page 120 - As a unit of resistance, the international ohm, which is based upon the ohm equal to 10" units of resistance of the CGS system of electromagnetic units, and is represented by the resistance offered to an unvarying electric current by a column of mercury at the temperature of melting ice, 14.4521 grams in mass, of a constant cross-sectional area and of the length of 106.3 centimetres.