A description of helioscopes and some other instruments |
Common terms and phrases
almoſt alſo Angle Animadverſions anſwer Arbor Axis Azimuth becauſe beſt body cauſe centre Clock confpicuous conſequently contrivance Croſs cylindrical defired deſcribe deſcription deſign deſired dimneſs Diſcovered diſtance dium Diurnal motion diviſions doth Earth eaſe eaſie eaſily Eclipse Ecliptick elſe entred eſpecially exactly Eye Glaſs faid fame faſtned Figure firſt firſt Axis Glaſſes Hand hath hazineſs Helioscope inclination Inſtrument Invention joyned Joynt laſt leaſure leſs Limb loſe manner of Dials Moon moſt motion moved muſt Object obſerved Optick parallel paſs Penumbra perpendicular Perſons plain Plate pleaſed poliſh poſſible poſture preſently publiſh purpoſe Quadrant reaſon Reflecting-plate reflection refraction repreſent reſpect Rowlers Royal Society ſaid ſame Screw ſecond ſee ſeeming ſelf Semicircular Arms ſerve ſet ſeveral ſhadow ſhall ſhew ſhould ſide ſmall ſome ſomewhat ſpaces ſpread ſteady ſtill ſtreight ſtrength ſuch ſufficiently ſuperficies ſuppoſe ſurfaces taken hold Telescopes thereof theſe thoſe Threds Tube Umbra uſe vwhich whoſe