| 单词 | spherometer |
| 例句 | It is well to control this process by means of a spherometer, so that the desired radius may be approximately reached. On Laboratory Arts Many devices have been added to the spherometer to make it as sensitive as possible, such as the contact level, the electric contact, and the compound lever contact. Scientific American Supplement, No. 484, April 11, 1885 After a little practice it will be found possible to bring the glass exactly up to the required curvature as tested by template or spherometer. On Laboratory Arts The spherometer is accepted at all stages of the process as the final arbiter as to curvature. On Laboratory Arts A check by spherometer will be applied at intervals according to the judgment of the operator, but, in any case, the fellow tool and lens should be kept at very nearly the same figure. On Laboratory Arts The squares of glass are cemented to the roughing tool, and this is ground to the spherometer by means of the counterpart tool. On Laboratory Arts It will be recognized that in working with the spherometer, only the points in actual contact can be measured at one time, for you may see by Fig. Scientific American Supplement, No. 484, April 11, 1885 Before the grade of emery is changed all three surfaces must agree, as nearly, at least, as the spherometer will show. On Laboratory Arts The process of fine grinding is continually checked by the spherometer, and the art consists in knowing how to move the grinding tool so as to make the lens surface more or less curved. On Laboratory Arts The rough grinding is checked by the spherometer, and is interrupted when that instrument gives accordant and correct measurements all over the surface. On Laboratory Arts The spherometer is accepted as the sole guide in obtaining the proper curvature. On Laboratory Arts Here is a very fine spherometer that Dr. Hastings works with from time to time, and which he calls his standard spherometer. Scientific American Supplement, No. 484, April 11, 1885 |
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