| 词汇 | nodus |
| 释义 | BETA Examples of nodusnodus isn’t in the Cambridge Dictionary yet. You can help! The sun's elevation is indicated by the position of a nodus, either the shadow-tip of a gnomon, or a spot of light. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. The time is read from where the nodus falls on a set of hour-curves that vary with the time of year. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. A nodus is formed where the second main vein (subcosta) meets the leading edge of the wing. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Nodus-based sundials may use a small hole or mirror to isolate a single ray of light; the former are sometimes called "aperture dials". From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. The mirror acts like a nodus, casting a single spot of light on the ceiling. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. The tip of the pointer serves as the nodus; the height of the nodus-shadow within the bowl gives the time of the year. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. With a knot or bead on the string as a nodus, and the correct markings, a diptych (really any sundial large enough) can keep a calendar well-enough to plant crops. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. |
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