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1 result for "Focal Point" in Creator.

Found in catalogs (50+)

• Educational Screen 1926-1927 — page 460

  …Hence lens of short focal length are used to give moderately large picture at close range, whi lenses of long focal length are used…

• Educational Screen 1932 — page 13

  …In a later unit, in our study of lenses, we shall measure focal lengths of lenses, and review the relationships between focal lengths, object…

• Business Screen 1954 — page 700

  …18", 22" focal lengths; tamp: 1" ,AC; Weight: 35 lbs.; Price: Accessories: pointer—$22.50; u^.^- .-.^.. •—$20.00: cover—$10.60; 12"xi2" pro…

• Educational Screen 1930-1931 — page 418

  …A lens of one inch focal length is usually supplied on 16 mm. cameras. Focal lengths up to six inches are standard equipment and…

• See and Hear 1945-1946 — page 265

  …the mode of ving in remote market places of the local focal point for all communication of leas. «ELO\\— Comparison sharpens any child's…

• Business Screen 1958 — page 304

  …As a show case, a publicity and preview focal point, the Columbus Festival would seem to be a worthy success: Films from all over…

• Educational Screen 1922 — page 74

  …Pictures as Focal Points That is, vividness, clearness, and ac- curacy of impressions are terms of relationship ; they depend upon the interest and attention…

• Educational Screen 1946-1947 — page 359

  …Pointer aperture permits use of pointer with slides . . . Attractively finished, compact, sturdy with clean flowing lines and controls and parts readily accessible . . . the ideal…

• See and Hear 1946,1947 — page 13

  …Pointer aperture permits use of pointer with slides . . . Attractively finished, compact, sturdy with clean flowing lines and controls and parts readily accessible . . . the ideal…

• Educational Screen 1957-1958 — page 841

  …Simpson Focal Length Modifier. By sim- ply attaching this auxiliary lens to the front of present 1 6mm projector lenses, the focal length of…

• Business Screen 1944,1945,1946 — page 781

  …Pointer aperture |>ermits use of pointer wilh slides . . . ConyenienI, positive, quick action tilling—either up or down \ttraclively fiiuslicil, compact, stui-dy witli clean…

• Educational Screen 1926-1927 — page 459

  OPTICS OF THE PROJECTOR 455 Figure 5 Ifcause the source of light, F, is not a point <pex) but a surface of considerable area…

• Business Screen 1959,1960 — page 1196

  …TIj series includes a choice of eigi' lenses, made from new glasses high index, with focal lengtl ranging from 20mm to 9" (speej of…

• Business Screen 1955 — page 318

  …NEW AUDIO-VISUAL EQUIPMENT Recent Equipment Developments for Production and Projection Wide, Normal Field Lenses Announced by Bell & Howell ^ High spre'(.l and focal…

• Business Screen 1965,1966 — page 971

  …series is short, succinct and ^t point. Average running time minutes. Subject matter is wfiled in a way calculated to in-depth discussion. five…

• Educational Screen 1932 — page 82

  …We found that focal length of a lens or combination of lenses determines the size of the image on the screen. Since many teachers…

• Business Screen 1956 — page 552

  …Kodak Offers Lens Converter for 16mm Kodascope Projector A lens converter for 16nnn Koda- scope Projectors which incorporates lenses of two focal lengths in…

• Business Screen 1969 — page 365

  …There is a choice of 11 focal lengths. For additional information, write Genarco, Inc.. 15-58 127th St.. College Point (Flushing), New York^ll356…

• Business Screen 1944,1945,1946 — page 529

  …short focal length lens gives the instructor, properly placed for inter- a projection from the desk to the screen pretation and pointing, back of…

• See and Hear 1946,1947 — page 179

  …Modern designs point toward windowless struc- tures; often the auditorium also serves as the school gymnasium. Projection, particularly for the average smaller auditorium, is…

• Educational Screen 1951,1952,1953 — page 183

  . . one of the focal points in the defense pattern for the nation by JOSEPH T. NERDEN Consultant, Audio-Visual Education Connecticut State Department of…

• Business Screen 1959,1960 — page 868

  …The "High Speed" model is supplied with an 18" focal length lens, 5" in diameter; the Standard model with a 22" focal length lens…

• See and Hear 1945-1946 — page 545

  …audio- visual aids as in the classroom, since this is the focal point in the educational life of children. The provision of special rooms…

• Educational Screen 1948-1949 — page 48

  …Nineteen full pages of lenses of every malie and description from one-half inch to 60-inch focal lengths. Cine, commercial, portrait and process…

• Business Screen 1958 — page 267

  …i^ This film, which points up Theodore Roose- velt's ideal of "Responsible Citizenship," is based on cartoons of the 26th President, and illustrations…

• Educational Screen 1928-1929 — page 229

  …well as the inclusion of those ideas which we find in point of fact have actually been omitted or conjoined in as- sociative combinations…

• Educational Screen 1954,1955,1956 — page 1304

  …Automatic take up reel ond optical magnifying pointer. 3, 5, 7, 9, 11 inch lenses available. STRIP-OMATIC Remote control 35mm film- strip advance…

• Educational Screen 1957-1958 — page 71

  …2", 3", 5" and 7" focal- length lenses available. V-2C • V-22C For 35mm filmstrip single and double frame, vertical and horizontal pictures…

• Educational Screen 1954,1955,1956 — page 1242

  …2", 3", 5" and 7" focal- length lenses available. < V-2C - V-22C - V-25C For 35mm filmstrip single and double frame, vertical and…

• Educational Screen 1944-45 — page 480

  …With these two points in mind, let us examine a telephoto lens, say of three inches focal length. This means that in- stead of…

• Educational Screen 1957-1958 — page 744

  …2", 3", 5" and 7" focal- length lenses available. WotM hrgeil £'xc&tM/e, MamipuJureri o^ StiM Ptojedoti ^^^ igCT j^Bi ^m» tl" HHaii…

• Educational Screen 1948-1949 — page 523

  …one teaching jjrocess, it became apparent that these various departments one focal point for all teaching aids Portland's MITI^RIALS Center by AMO…

• Educational Screen 1954,1955,1956 — page 1229

  …The focal length of the converter is changed by simply reversing its position. It can alter the focal length of the standard 2- inch…

• Business Screen 1958 — page 460

  …It is dominated by a mammoth statue of Lenin, and the focal point which attracts the attention of the visitors is, of course, the…

• Educational Screen 1942 — page 396

  …CASH wtthORDER 50c Bring Africa, Focal Point In World News to ITour Classroom How? It*s easy! Just rent the 16nim. !-ound film called…

• Business Screen 1954 — page 693

  …5" f:3.5, fade shutter, micro- scope knob; pointer; geared tilt; Lamp: 500-watt; Weight: 13 lbs. Price: $119.50. Other Models: AU…

• Educational Screen 1948-1949 — page 836

  …To accommodate a wide range of pro- jection conditions, three objectives in the following focal lengths and "i" values are available: S" i/3…

• Business Screen 1942,1943 — page 75

  …It is pointed out that the personnel of this department has had many years experience in visualization through any and all mediums. Now. at…

• Educational Screen 1924-1925 — page 709

  …for your particular purposes, and involve the further point of the ease with which the focal axis of the instrument may be raised and…

• Educational Screen 1941 — page 140

  …Each projector is equipped with 2-inch f/1.6 lens but a choice of six lenses is available, in focal lengths of 1…

• Educational Screen 1932 — page 161

  …The amplified music can then he distributed to any desired points. Some rooms in which the music reproducer is frequently needed have both input…

• Business Screen 1963,1964 — page 1076

  …is one of the focal points of the Kodak Pavilion, Produced by Saul Bass, the tilm dramatizes the heights of sensitivity to which vision…

• Business Screen 1957 — page 540

  …35mm Model— Focal Length 25 to 200mm _ $68.50 35mm Widescreen Model—Covers all ratios from 1:75 to 2:55 $98.50 16…

• Business Screen 1953 — page 668

  …through a switching panel, to se- lected points in the building, such as the main dining room, main office lobby, and the cafeteria. Tied…

• Educational Screen 1941 — page 18

  …The short focal length lenses that are standard for miniature cameras have great depth of field. e. Film for miniature cameras is inexpensive. f…

• Business Screen 1954 — page 394

  …the focal length of the lens being used. Industrial, science and art classes can use this equipment to reduce tracings, the company points out…

• Business Screen 1940 — page 263

  …or as a projector for advertising exhibits, show displays and sim- ilar purposes, A 3-inch focal length lens and Vernier focus assures simple…

• Business Screen 1969 — page 564

  …He is in the mainstream of opinion and therefore becomes the focal point at which data can be collected, analyzed, evaluated and he can…

• Business Screen 1959,1960 — page 1038

  …Lens has focal ligthi of four-tenths of an inch a) a| speed of 2.2. It is also usejon the projection system. Only…

• Educational Screen 1923 — page 319

  …By having all duplicate material passed on before being offered for exchange and through the numerous points of con- tact which such an institution…