A pair of inappropriate glasses not only fails to achieve an ideal outcome of the correction, but also may be harmful to wearers' eyes. Frames that are too large are easy to fall off and break up, and then you may be scratched by broken lenses. However, the line between large and sma...
[Mathematics] has for its object the indirect measurement of magnitudes, and it proposes to determine magnitudes by each other, according to the precise relations which exist between them. — Auguste Comte In The Positive Philosophy of Auguste Comte, translated by Harriet Martineau, (1896), Vol....
a polariser and two measurement glass holders (11) which can be moved horizontally in front of the eyes of the subject and which contain fully correcting measurement glasses and carry analysers (1... H Heinz 被引量: 1发表: 1996年 Laser distance measurement device The utility model provides ...
A method is provided for the correction of the eye, corrective measurement of the eye, and personal Sunglasses including individuals whose visual acuity is 20 / 20 and glasses, and apparatus, and systems are provided.リャン,ジュンジョン
‘Randot stereo’ test, cover-test and underwent general eye examination including fundus ophthalmoscopy and a slit lamp examination of the anterior segment. The criteria for inclusion were visual acuity better than 0.1 LogMar with a difference of less than 0.2 LogMar between eyes, stereopsis better...
My father fat, tall, with black hair and blue eyes, wearing square glasses, is a hospital doctor. My uncle lanky, brown hair, blue eyes, was a policeman. 我是珍妮,我是我来自美国的12年。 我的母亲过分瘦长,用金黄头发,她是医院护士。 我的父亲肥胖,高,与黑发和蓝眼睛,佩带的方形的玻璃,是...
You are probably well aware that strong acids are dangerous. The fact that they cause extreme skin irritation and sting if they get in your eyes is incentive enough to wear protective clothing and glasses. However strong bases, such as KOH or drain-cleaning solutions which are NaOH-based, are...
1, one or both of the lenses 102 may be relatively clear or transparent so as not to obstruct vision of a user wearing the eyeglasses 100. As an example, in the first state, one or both of the lenses 102 may allow between about 90% and 100% light transmittance to pass therethrough...
16. A measurement method for measuring birefringence of a reticle, comprising: arranging the reticle in an installation position between an illumination system and a projection objective of a projection exposure apparatus proximate to an object surface of the projection objective; and measuring the biref...
between 1 and 2 mm and to receive the light scattered from this measurement point with high accuracy. This requires accurate alignment between the apparatus and the eye under examination, particularly in the horizontal direction, and also makes it necessary to have a method for confirming that ...