| birefringent |
Birefringence, or double refraction, is the division of a ray of light into two rays (the ordinary ray and the extraordinary ray) when it passes through certain types of material, such as calcite crystals, depending on the polarization of the light. This is explained by assigning two different refractive indices to the material for different polarizations. ...
출처: en.wikipedia.org/wiki/Birefringent
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| birth control |
Birth control generally refers to any plan or method used to alter or avoid the body's natural state of fertility, thereby preventing or reducing the probability of pregnancy without abstaining from sexual intercourse; the term is also sometimes used to include abortion and natural family planning. The term family planning is normally considered a synonym for the term birth control. ...
출처: en.wikipedia.org/wiki/Birth_control
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| birth control pill |
Oral contraceptives are chemicals taken by mouth to inhibit normal fertility. All act on the hormonal system. Female oral contraceptives have been on the market since the early 1960s, and enjoy great popularity. It is used by millions of women around the world, though the acceptance varies by region: approximately one-third of sexually active women in the United Kingdom, but much less in countries such as Japan. ...
출처: en.wikipedia.org/wiki/Birth_control_pill
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| birth trauma |
Pre- and perinatal psychology is the study of the psychological implications of the earliest experiences of the individual, before (prenatal) and during (perinatal) childbirth. Although theoretical and therapeutic approaches vary in their treatment of the topic, a common thread is the fundamental importance of pre- and perinatal experiences in the shaping of the personality and future psychological development. ...
출처: en.wikipedia.org/wiki/Birth_trauma
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| birth weight |
Birth weight is the weight of a baby at its birth. It has direct links with the gestational age at which the child was born and can be estimated during the pregnancy by measuring fundal height. A baby born within the normal range of weight for that gestational age is known as appropriate for gestational age (AGA). ...
출처: en.wikipedia.org/wiki/Birth_weight
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