Specular Reflection: From 1 Different Sources
(in *ultrasonics) the reflection of sound waves from the surface of an internal structure, which can be used to produce a picture of the surface as a sonogram (see ultrasonography). A specular reflection contrasts with vaguer diffuse echoes produced by minor differences in tissue density.
(Hebrew) One who meditates; a pause for reflection... higgaion
(Greek) Resembling a daffodil; self-love; in mythology, a youth who fell in love with his reflection Narcisa, Narcisse, Narkissa, Narcissah, Narcisah, Narcessa, Narcissus, Narcyssa, Narcysa, Nargis, Nargiss, Nargys, Naryss, Nargisse, Nargysse... narcissa
Oil secreting glands, mostly clustered around hair follicles. The oil, sebum, is released into the oil glands from the disintegrated cytoplasm of shedding holocrine cells that line the alveolar surfaces. The nature of the secretion is a direct reflection of the state of the body’s lipid metabolism.... sebaceous gland
Essential oils are used in prayer, zen, yoga or meditation to induce rest and reflection. Bergamot, Balm (Melissa), Sage, Lavender, Orange Blossom. Any one used as an inhalant or to anoint the forehead with a smear. ... meditation
The transmission of images through bundles of thin, flexible glass or plastic threads which propagate light by total internal reflection. This means that all the light from a powerful external source travels the length of the fibre without losing its intensity. Fibre-optics have led to the development of endoscopes, which enable structures deep within the body to be viewed directly.... fibre-optics
(Placido’s disc) n. an instrument for detecting abnormal curvature of the cornea. It consists of a black disc, about 20 cm in diameter, marked with concentric white rings. The examiner looks through a small lens in the centre at the reflection of the rings in the patient’s cornea. A normal cornea will reflect regular concentric images of the rings; a cornea that is abnormally curved (for example in *keratoconus) or scarred reflects distorted rings. Modern keratoscopes can print out a contour map of the corneal surface.... keratoscope
(PAR) a radical approach to public health issues that actively involves communities in collaboration, reflection, data collection, and activities that empower them to improve their own health. See empowerment.... participatory action research
the red area seen through the pupil as a result of the reflection of light from the retina. It is usually seen on *fundoscopy and sometimes in photographs taken using a flashlight.... red reflex
the process of critically considering one’s own professional practice during or after events in order to review one’s values and to understand the emotions and reasons behind one’s actions and decisions and the effect of those actions and decisions on others. Reflection is seen as essential to developing and maintaining ethical medical practice. See autonomy.... reflective practice
n. an instrument used to determine the power of spectacle lens required to correct *refractive errors of the eye. It is held in the hand and casts a beam of light into the subject’s eye. The examiner looks along the beam and sees the reflection in the subject’s pupil. By interpreting the way the reflection moves as the instrument is moved, and by altering this by lenses held in the other hand near the subject’s eye, the examiner is able to determine the degree of refractive error. —retinoscopy n.... retinoscope
n. vulnerability to disease. It is partly a reflection of general health and health-related behaviour but is also influenced by vaccination or other methods of increasing resistance to specific diseases.... susceptibility
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