A London encyclopaedia, or universal dictionary of science, art, literature and practical mechanics : comprising a popular view of the present state of knowledge : illustrated by numerous engravings, a general atlas, and appropriate diagrams (1829)
Curtis, Thomas, fl. 1820 · London : Thomas Tegg · leaf 382
or moon. We might also have a circleabout 1 above either of these which mightrepresent the sensible a]iparent horizon withregard to the moon, including the correction forher parallax ; and a similar ring, placed stilllower, woidd show the duration of twilight, orany sup|iosilion tliat might be… … Fu/.l.
Encyclopedias and dictionaries · Aeronautics
Internet Archive · California Digital Library · Public Domain Mark 1.0. Free to use for anything.
![An illustration from M. Vitrvvii viri svae professionis pertissimi De architectvra libri decem, ad Avgvstum Cæsarem accuratiss. conscripsit & nvnc primvm in Germania qva potuit diligentia excusi, atq[ue] hinc inde schematibus non iniucundis exornati (1543)](https://img.insideoutlibrary.com/img/200/ia-mvitrvviivirisva00vitr-82-19.webp)
![An illustration from [Graphophone patents] (1878)](https://img.insideoutlibrary.com/img/200/ia-graphophonepaten07unit-519-348.webp)
