| cardioid | Resembling a heart. Origin: cardi-+ G. Eidos, resemblance (05 Mar 2000) |
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| cardioid condenser | A type of dark-field condenser. (05 Mar 2000) |
| cardioid dark field condenser | <microscopy> A condenser designed with two reflecting surfaces, the first, a spherical surface which reflects the rays to a second, cardioid (heart-shaped) surface. The virtue in such an arrangement is that, if the cardioid surface is of true figure, the lens is both achromatic and aplanatic. It has a limiting numerical aperture of about 1.0. Thus objectives of a greater numerical aperture cannot be used successfully with it. A true cardioid figure is the trace of a point on the circumference of a circle rolling around an equal, fixed circle. (05 Aug 1998) |
| cardioid |
an epicycloid in which the rolling circle equals the fixed circle
Ãâó: wordnet.princeton.edu/perl/webwn
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| cardioid condenser |
a special type of condenser for illuminating a specimen in darkfield microscopy.
Ãâó: www.mercksource.com/pp/us/cns/cns_hl_dorlands.jspz...
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| cardioid |
Describes the pickup pattern of one type of directional microphone, which is roughly in the shape of a heart. Such microphones are several dB less sensitive to sound arriving from sources at angles 90 degrees or greater away from its front.
Ãâó: www.kareoke.com/glossary/microphone_glossary_of_te...
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| cardioid |
This describes the shape of one type of microphone's sound sensitivity: it literally means "heart-shaped."
Ãâó: www.internews.ru/books/radiohandbook/29.html
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| cardioid c. |
a special type of condenser for illuminating a specimen in darkfield microscopy.
Ãâó: www.mercksource.com/pp/us/cns/cns_health_library.j...
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| cardioid | an epicycloid in which the rolling circle equals the fixed circle |
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