| birefringence |
In CDs and other optical discs, it means double refractive ability. It is caused mainly by improper cooling of the substrate during the injection-molding process. In optical applications, substrate birefringence is unwanted, since it interferes with the read function. Users, however, can not determine that it is birefringence that is causing read errors or poor performance of their CD-ROM applications--it is detected by special equipment and tests.
출처: www.geocities.com/columbiaisa/glossary_basic.htm
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| birth control |
Any method used to reduce births, including celibacy, delayed marriage, contraception; devices or medication that prevent implantation of fertilized zygotes, and induced abortions.
출처: highered.mcgraw-hill.com/sites/0070294267/student_...
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| birth control |
Any device used for the regulation of conception, pregnancy, and birth. 374
출처: highered.mcgraw-hill.com/sites/007241278x/student_...
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| birefringence |
(Nearly synonymous with double refraction.) Two different real parts of the refractive index for electromagnetic waves, identical except for their states of (orthogonal) polarization. By orthogonal is meant that the waves have opposite handedness, the same ellipticity, and the major axes of their vibration ellipses are perpendicular to each other. The most general birefringence is elliptical, specific examples of which are linear and circular. ...
출처: amsglossary.allenpress.com/glossary/browse
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| birth control |
the regulation of the number of children born, referring either to the prevention of pregnancy (by birth control pill, sterilization, etc) or the prevention of birth (by abortion, etc)
출처: www.american-depot.com/services/resources_gl_b.asp
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