Epact Scientific Instruments of Medieval and Renaissance Europe

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Glossary

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140 to 144 of 227 glossary terms

perpetual calendar: calendar covering a number of years, see article on time and date.

phase of the moon: the changing appearance of the moon throughout its approximately monthly cycle, from the thin crescent of new moon to the complete circle of full moon and back again.

pillar dial: type of altitude dial, see article on the sundial.

pin gnomon: the part of a sundial which casts the shadow, where this part is in the form of a pin.

plane table: type of surveying instrument, see article on the plane table.

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