George E. Brown, C. H. Hewitt,
... Ltd., "Boardoid" Photography, The Sanger-Shepherd New Adjustable Filter Holder, Adherent Tissue Co., Ltd., W. Watson & Sons, ... and Other Cameras, Goerz-Anschutz, New Black Graduated Filter and Autochrome Screen Combined, Thornton-Pickard Patent Reflex ...
1914 - Gale Group | NCCO Photography
Acoustic Wave Filters Composed of a Series of Like Sections.---(1) Theory. Taking the impedance of any part of an acoustic ... dissipative forces, it is possible to construct a filter having limiting frequency values of no attenuation determined ... is somewhat empirical. (2) Construction and test of filters of three types. Low-frequency-pass filters were made, for example, by two concentric cylinders ... d.v. where transmission again appeared, Other similar filters of different dimensions attenuated through wider or narrower ...
Tópico(s): Scientific Research and Discoveries
1922 - American Institute of Physics | Physical Review
... Price List, The "Klito", The Taxiphote, "Kopit" Tap Filter, Hood Post Cards!, Robbins'"Polo" Specialities, Kodak Limited, ... Plates, 'Wellington', The Sanger-Shepherd New Graduated Colour Filter, The New Gwyer Lime-Light Jets, "Celluloid", Rough & ...
1910 - Gale Group | NCCO Photography
Lotfi A. Zadeh, Kenneth S. Miller,
... the basic concepts in the theory of electrical filters is that of an ideal filter. As commonly defined, an ideal filter is a network which passes without distortion all ... is formulated which extends the concept of ideal filter to both linear varying-parameter and nonlinear types of systems. Briefly, a filter N is said to be ideal if it ... consequence of this definition is that any ideal filter N (linear or nonlinear) is idempotent, that is, is equivalent to a tandem combination of two filters each of which is identical with N. The ...
Tópico(s): Structural Health Monitoring Techniques
1952 - American Institute of Physics | Journal of Applied Physics
Jeremy Rundall, L. J. Corbett, Charles Raw, John Henderson, Richard Buckle, Anthony Vice Editor, Business News, Elizabeth Nicholas, Nicholas Carroll Diplomatic Correspondent, Athole Still, Michael Manning, F Whitham, Ian Peebles, Marcella FitzGerald, Eric Ambrose, J. W. Lambert, Robert Carrier's, Antony Terry, Roger Nuttall, Cal McCrystal, Rev M C D'Arey, Elizabeth Good, Henry Brandon, Alix Coleman, John Russell, Douglas Hogg, Geoffrey Nicholson, Hugh Wynn, Derek Jewell, Sarah Hollis, Patrick Campbell, Vivian Jenkins, Brian Inglis, Tom Margerison, Richard Gale, Hugh Somerville, Cyril Connolly, Peter Stone, Sir Herbert Thompson, Rosalind Lang, Michael Howard, Raymond Mortimer, J G Watling, Oliver Marriott, Maxwell Boyd, Nigel M Jenkins, Oscar Turnill, Richmond, Peter Wilsher, Susan Noel, Alain Vernay, Bryan Silcock, Michael Limb, Roger Mortimer, John Berger, Desmond Shawe-Taylor, Alastair Buchan Director, Institute for Strategic Studies Ltd, Margaret Laing, B H Liddell Hart, Tim Llewellyn, Stephen Aris, J S Rowley, Lanning Roper, Dilys Powell, Hugh Johnson, Brigid Keenan, M R Loveridge, C G Mills, Richard Hughes, John John, Harold Abrahams, Felix Aprahamian, David Leitch, Ogmore, Henry Longhurst, Edmund Stephens, Lewis Chester, Godfrey Smith, James Margach Political Correspondent, Michael Moynihan, Brian Glanville, J M M Smith, Derek Wilson, Keith Richardson, Walter Heller, Andrey Voznesensky, Ralph Bond, C. H. O'd. Alexander, Maurice Wiggin, John Bowen, E Mear Walters, Andrew Horsbrugh-Porter, Vera Russell, Gordon Ross, Phillip Knightley, Julian Mitchell, Anthony Cowdy, T. Folkingham, Anthony Howard, Pauline Peters, Kenneth Konstam, John Mattison, Nicholas Tomalin,
... who love the sun, love Spain Hoover Embassy Filter Virginia Terylene Japanese cameras Limited J. R. Freeman ... in sexuality Trans World Airlines Sobranie Fine Virginia Filter Engineers With professional qualifications Yashica Normand (Mayfair) Limited ...
1965 - Gale Group | Sunday Times HA GDA
... hydraulics upon the formation and erosion of mud filter cakes. The tests were conducted to simulate drilling ... as nearly as possible. The formation of mud filter cake in a drilling well does not proceed ... being circulated. If the mud column is quiescent, filter cake formation is a smooth function of the ... the system. If the mud is being circulated filter cake formation depends not only upon the filtration ... the erosive action of the flowing mud column. Filter cakes formed during continuous mud circulation were observed ...
Tópico(s): Enhanced Oil Recovery Techniques
1952 - Society of Petroleum Engineers | Journal of Petroleum Technology
George E. Brown, A. Horsley Hinton,
... Folding Ruby", The Sinclair "Junior Una", Sanger-Shepherd Filter-Fittings & Orders, Lizars'"Challenge" Focussion Magazine Cameras, Lancaster' ... Instantaneous Shutter, Marion & Co., Ltd., Beck-Harris Spectrum Filter, Best Quality Stand Camera, Light Filters, Gandolfi's ...
1909 - Gale Group | NCCO Photography
... discusses the results obtained from high temperature, highpressure filter loss studies in which field samples of clay- ... premiumpriced emulsion and oil base drilling fluids show filter loss peculiaritiesthat are not predicted by standard API tests. It is recommended that hightemperature-high pressure filter loss tests be used to evaluate the performanceof ... money each year on chemicaltreating agents for lowering filter loss and on premium-priced low filter lossdrilling fluids. While it is an accepted fact ...
Tópico(s): Reservoir Engineering and Simulation Methods
1952 - Society of Petroleum Engineers | Journal of Petroleum Technology
C. H. Hewitt, D. Berlin, L. Haweis,
... The Altrincham Rubber Company's Washing Rose and Filter for Negatives & Prints, Seavey Co., Bromona, The Sinclair " ... Folding Pocket Camera, The Sanger-Shepherd Graduated Light Filter, The Sanger-Shepherd Arc Lamp, Goerz-Anschutz Stereoscopic ...
1912 - Gale Group | NCCO Photography
The theory of optimum nonlinear filters outlined in this paper is based on the consideration of a sequence of classes of nonlinear filters, designated as 𝔑1, 𝔑2, 𝔑3, …, such that each ... preceding classes and, furthermore, the class of linear filters is a subclass of every class in the sequence. A filter of class 𝔑m is described in terms of ... time-function. The input-output relationship for a filter of class 𝔑m has the form of an ... shown that the characteristic function of the optimum filter (in the least squares sense) within the class ...
Tópico(s): Cybersecurity and Information Systems
1953 - American Institute of Physics | Journal of Applied Physics
Springer Link
Russell Sedgfield, George Croughton, W. E. Batho, John Nicol, W. De W. Abney, Lindsay Howie, Josef Maria Eder, John Lessels, J. H. T. Ellerbeck, M. Noton, W. E. Batho, J. H. Steward,
... with the Camera, Operating Department No. I, To Filter or Not to Filter?, A Convenient Method of Development for Dry Plates, ...
1876 - Gale Group | NCCO Photography
Optical birefringent filters, which depend for their action on the interference of polarized light, can be designed to transmit very sharp ... design is given.Three forms of wide field filters designed by Lyot are described in detail. A more recently developed split element, wide field filter requires only half as many polarizers as the ... of adjusting the transmission bands of a birefringent filter, including the use of elements of variable thickness, ... and their application, in simple and split element filters are described.A few crystalline materials which have ...
Tópico(s): Optical Coatings and Gratings
1949 - Optica Publishing Group | Journal of the Optical Society of America
C. Hazen Trayvor, Dr. C. E. K. Mees, Arthur Carpenter,
... Dry Mounting Tissue, Eastman Kodak Company, Kodak Color Filter, Kodak Film Tank and Kodak Amateur Printer. Essay: ... Lens; Stop, 16; 1/5 Sec., with Tripod, Filter Factors, Negative and Print Criticism, The Light of ...
1917 - Gale Group | NCCO Photography
Inductorless filters are attractive for numerous practical reasons. Passive RC filters, however, suffer from the defects of high in- ... elements. These defects are overcome in active RC filters in which amplifying elements supply power to the filter in addition to that applied by the signal. A class of active filters is described in which one active component, a ... number of reactive elements in the corresponding LC filter. The ultimate limit in performance in this class of active filters is the drift in the converter. The drift ...
Tópico(s): Analog and Mixed-Signal Circuit Design
1954 - Institute of Electrical and Electronics Engineers | Proceedings of the IRE
Springer Link
A Fg L, Max Madden Mp, Rosemary Righter, Will Ellsworth-Jones, Joe Hollander, Terry Simms, Jon Swain, Christopher Price Mp, Philip Norman, Harold Hobson, Peter Gillman, John Lambert, Mathew Robertson, Syed Farook Rahman, Graham Rose, James Poole, J. W. Lambert, Hugh Rossi, John Whale, Keith Boteford, Joan Macintosh, Richard Streeton, Philip Oakes, Mario Modiano, Henry Brandon, John Coates, Richard Milner, Deryk Brown, Keith Botsford, David Dougill, Edith Lenart, Cliff Temple, Philip Clarke, Derek Jewell, Sir Harold Wilson, Rhombus, John Ballantine, Norman Harris, David Blundy, Michael Jones, Robert Troop, P. J. Warren Editor, Robin Marlar, Hugh Somerville, Danah Zohar, Malcolm Crawford Economics Editor, Patrick Forman, Roger Eglin, G Turvey Deputy Director-General, Jean Kelly, Peter Lennon, Michael Howard, Jilly Cooper, Lorana Sullivan, John Wardroper, John Ball, Carylne Murphy, Judith Jackson, John Fryer Labour Correspondent, Annabel Herriott, Anthony Storr, Vanya Walker Leigh, John Hopkins, C H Rolph, Kathleen Don, Roman Eisentein, John Barry, Jill Neville, Derrik Mercer, Eric Marsden, Peter Wilsher, Rosemary Atkins, Jean Robertson Travel editor, Terry Sedgo, David Prince, Roy East, Malcolm Winton, Wendy Cooper, John Raymond, Michael Pye, Kuldip Nayer, David May, Desmond Shawe-Taylor, Quentin Crisp, Alan Brien, Gwen Nuttall, Michael Bateman, Iain Carson, K A Sutherland, Patrick Rowley, Dilys Powell, Carolyn Faulder, R. H. Dent Chairman, Brigid Keenan, Russell Miller, Brough Scott, Parin Janmohamed, Oliver Gillie Medical Correspondent, Brad Burgess, Elkan Allan, Richard Hughes, Rob Rohrer, Dudley Doust, David Leitch, Ian Jack, Graham Searjeant Financial Editor, William Allsopp, Peter Clarke, Peter Pringle, Richard Burnell, Humphrey Brooke, Christopher Ricks, Hunter Davies, Antonia Fisher, Derek Humphry, Michael Moynihan, Brian Glanville, Richard West, Keith Richardson, Graham Searjeant, J M Williams, Caroline Silver, Dave Phillips, Maurice Wiggin, Michael Jones Political Correspondent, Denis Lehane, Michael Parkinson, Roman Eisenstein, Marina Vaizey, Margery Fisher, Phillip Knightley, Philip Jacobson, Roland Adburgham, Boris Schapiro, Sandy Sutherland,
... Top ten in the Stately Homes league Embassy Filter Yesterday's Album Nordic Saunas So who was ... u. k. ltd Vintage Cars Craven Black Cat Filter Sheraton Hotels in Europe Royal Navy Officer A. ...
1976 - Gale Group | Sunday Times HA GDA
L. N. Hadley, David M. Dennison,
An interference filter of the reflection type consists in its simplest form of a perfectly reflecting mirror on which is placed ... thin metallic film. When properly constructed such a filter reflects 100 percent of radiation at the frequencies ... at the frequencies (2n + 1)ν0.A transmission filter consists of a thin dielectric layer, both sides ... with very thin metallic films. A well made filter will transmit up to approximately 40 percent of ... the film.The reflection coefficient for the reflection filter is developed next and is expressed as a ...
Tópico(s): Optical Coatings and Gratings
1947 - Optica Publishing Group | Journal of the Optical Society of America
... Schwing Finger-Print Camera, Photographing Stained Glass Windows, Filter Factors and Orthochromatic Plates, What Background?, Our Illustrations. ... ads: Eastman Portrait Film, Use a Wratten K2 Filter and Orthochromatic Plate and Reflections from Polished Surfaces ...
1917 - Gale Group | NCCO Photography
... of the feeding organs in various aquatic invertebrate filter feeders (suspension feeders), especially in such forms as ... suspension‐feeding lamellibranchs the gills both propel and filter the water. Most investigators assume that the filtration ... has, however, also been demonstrated in the oyster. Filter‐feeding habits have been adopted independently by several ... to the mucus. In suspension‐feeding copepods a filter chamber is enclosed between the ventral body wall ... mouth and forming the lateral walls of the filter chamber. The feeding currents are produced chiefly by ...
Tópico(s): Marine Ecology and Invasive Species
1955 - Wiley | Biological reviews/Biological reviews of the Cambridge Philosophical Society
Springer Link
Francis Bedford, W. England, H. P. Robinson, J. Mudd, V. Blanchard, N. K. Cherrill, T. Cuthbertson, O. G. Rejlander, J. H. Dallmeyer, W. T. Bovey, H. P. Robinson, John Anthony, J. H. Dallmeyer, William Mayland, Hugh W. Diamond, Col. Stuart Wortley, N. K. Cherrill, R. Faulkner, H. Baden Pritchard, W. T. Bovey, Dr. D. Van Monckhoven, J. Werge, Prof. H. Vogel, Samuel Fry, John Nicol, O. G. Rejlander, F. W. Window, R. Maidstone Smith, F. G. Eliot, John Beattie, William Heighway, John Spiller, Wm. Bedford, T. L. Phipson, John A. Spencer, R. Slingsby, H. S. Burton, George Bruce, W. Neilson, Sydney Smyth, George Croughton, Captain Francis W. Turton, William Brooks, Henry Gregson, G. S. Penny, R. Tudor Williams, T. Gulliver, R. Kennett, W. T. Wilkinson, George Willis, C. Ferranti, Reuben Mitchell, Frank M. Sutcliffe, R. W. Aldridge, Charles E. Pearce, W. G. Hunter, A. Johnston, J. C. Stodart, J. Brier Jr., William H. Watson, Geo. Hooper, A. Rivot, F. Beasley Jr., A. H. Bool, William Perrin, A. Borland, T. Tedrake, David Hedges, Albert Dumsday, C. J. Eve, T. Gulliver, R. W. Aldridge, James Martin, J. Walter, Charles Knight, A. C. Burgess, J. M. Young, J. W. Gough, George Hooper, Alfred Pumphrey, J. Alexander, W. Tindill Watson, Augustus W. Wilson, William Gillard, Charles Allan Ferneley, W. Colquhoun, B. J. Edwards, J. Barker, John Titterton, Fritz Haugk, Frank M. Good, Koch Reich, Capt. W. De. W. Abney, Edmund Phipps, Henry Gregson, Sydney Smyth, George Washington Wilson, E. H. Speight, F. M. Bell Smith, Alex. Asher, W. J. Stillman, Valentine Blanchard, Edwin Cocking, W. Griggs, C. Durand, P. Le Neve Foster,
... and on Printing, Transparencies for Enlargements, A Simple Filter for the Nitrate Bath, The Ownership of Negatives, ... Novel and Brilliant Effects in Portraiture, A Simple Filter, Guides to Practice—By Various Contributors Softness and ...
1875 - Gale Group | NCCO Photography
The problem of terminal wave-filter impedance characteristics is considered in this paper, in particular that of obtaining an approximately constant wave-filter impedance in the transmitting bands of a wave-filter of any class, which is of importance where the wave-filter is terminated by a Constant resistance, the usual ... repealed use of the methods of deriving wave-filter structures which gave the M-types, combined with composite wave-filter principles. The results are wave-filter transducers which ...
Tópico(s): Non-Destructive Testing Techniques
1931 - Institute of Electrical and Electronics Engineers | Bell System Technical Journal