F. H. Richardson's bluebook of projection (1942)

Record Details:

Title:
F. H. Richardson's bluebook of projection
Date:
1942
Publisher:
New York : Quigley Publishing Company, Inc.
Volume:
F. H. Richardson's bluebook of projection
Leaf #:
000370
Language:
English
Subjects:
Motion Pictures, Motion Picture Technology
Collection:
Books
Format:
Books
Contributor:
Media History Digital Library
Sponsor:
Media History Digital Library
Coordinator:
Media History Digital Library
Description:
Date Added:
July 11, 2024
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354 RICHARDSON'S BLUEBOOK OF PROJECTION 49. Why should arc gases be vented outside the projection room? 50. What is a carbon "jaw"? 51. Why are magnets used in connection with the arc lamp? 52. What are mirror guards and why are they used? 53. What special condition in an arc lamp complicates the choice of lubricants? 54. How can the projectionist tell if his arc is correctly positioned ? 55. How can the projectionist tell if his arc current is what it should be? 56. What types of current are used in projection arcs, and from what sources are they obtained? 57. What is a straight high intensity light source? 58. What is the brilliancy of straight high intensity craters per square mm ? 59. Why should the straight high intensity light source be operated carefully? 60. Is high intensity very sensitive to improper adjustment? 61. What is the total candle power of high intensity at different amperages ? 62. What is the correct adjustment of the high intensity arc? 63. Is arc voltage a safe guide in operating the high intensity light source ? 64. From what does the major portion of high intensity light emanate ? 65. Is high intensity light more brilliant than carbon at the temperature of volatilization ? 66. Must the high intensity crater be kept filled with gas? 67. By what is the gas confined to the positive crater? 68. In exactly what position should the negative carbon tip be ? 69. What are the correct measurements between positive and negative carbon tips with a 16 mm trim? 70. Do the various makes of high intensity lamps all perform the same functions? High Intensity Positive Contacts, page 378 71. Of what are high intensity lamp carbon contacts made and how long should they last ? 72. What should be done with badly burned or pitted contacts? 73. Is it practical to use a file on the contacts?