The Young Gentleman and Lady's Philosophy,: Containing, I. The use of the celestial and terrestrial globes. II. The philosophy of light and colours, and the use of all sorts of optical instruments. III. The philosophy of sounds, music, and the organization of the ear. Illustrated by nineteen copper-platesW. Owen, Temple-Bar; and by the author, at his house in Fleet-Street., 1772 - Science |
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Page 157
... magnified in the folar Microfcope , are reprefented in a Beam of the Sun's Light , very much dilated upon the Side of a Room or Screen ; but here you will fee Objects reprefented on the real Face , or the Disk of the Sun itfelf ; so ...
... magnified in the folar Microfcope , are reprefented in a Beam of the Sun's Light , very much dilated upon the Side of a Room or Screen ; but here you will fee Objects reprefented on the real Face , or the Disk of the Sun itfelf ; so ...
Page 158
Benjamin Martin. nitude , according to the Distance of the Screen from the magnifying Glafs , and you will always know the Diameter of the magnified Image of the Sun by the Number of Inches to which the Screen is placed on the Scale ...
Benjamin Martin. nitude , according to the Distance of the Screen from the magnifying Glafs , and you will always know the Diameter of the magnified Image of the Sun by the Number of Inches to which the Screen is placed on the Scale ...
Page 160
... magnifying Objects in the Nature of a folar Microscope , I fhall explain to you at another Season , which will be very fhortly : As our next Subjects of philofophical Converfation will be thofe of the Defcription , and prac- tical Uses ...
... magnifying Objects in the Nature of a folar Microscope , I fhall explain to you at another Season , which will be very fhortly : As our next Subjects of philofophical Converfation will be thofe of the Defcription , and prac- tical Uses ...
Page 163
... magnify any fmall Object : -But one Query I must beg you to fatisfy before we proceed farther , and that is , how it is in the Power of a Glafs to make an Object bigger or less . Cleon , The Glafs , my Euphrofyne , can do no fuch Thing ...
... magnify any fmall Object : -But one Query I must beg you to fatisfy before we proceed farther , and that is , how it is in the Power of a Glafs to make an Object bigger or less . Cleon , The Glafs , my Euphrofyne , can do no fuch Thing ...
Page 165
... magnified by fuch a Glafs , Cleon . What you have now faid , you inftantly prove by Experiment ; and the fame Reafon holds for any Glafles of thorter focal Distances , they always magnify more in Proportion . But let us reflect a little ...
... magnified by fuch a Glafs , Cleon . What you have now faid , you inftantly prove by Experiment ; and the fame Reafon holds for any Glafles of thorter focal Distances , they always magnify more in Proportion . But let us reflect a little ...
Common terms and phrases
Aftronomers alfo anſwer apparent Magnitude appear becauſe Brafs Cafe called Circle Cleon Cleonicus Colours confequently confiderable confifts Conftellations Conftruction Convex Courſe curious defcribed Defign Degree Diameter diftant diftinct diurnal Motion eafily eafy Earth Ecliptic Euphrof Euphrofyne faid fame farther fecond feems feen feven feveral fhall fhew fhould fince fingle firft firſt fmall focal Diſtance folar fome Form ftill fuch fufficient fuppofe Glaffes Glafs Glaſs Globe Hemifphere Horizon Image Inches Inftance Inftrument interfect itſelf juft laft Latitude lefs magnifying Manner meaſure Meridian Microſcope moft Monochord Moon moſt Motion mufical muft muſt Nature neceffary Number obferve Object Occafion Octave optical pafs Phænomenon Place Planet pleaſe Pleaſure Pofition Point pray prefent Purpoſe Rays Reafon reflected refracted reprefent Retina Rifing ſmall Sound Speculum Stars String Sun's Surface Teleſcope thefe theſe Thing thofe thoſe Tranfit underſtand Uſe Vibrations View Vifion Weft whofe
Popular passages
Page 39 - When grown to manhood he begins his reign, And with stiff pinions can his flight sustain, He lightens of its load the tree that bore His father's royal sepulchre before, And his own cradle: This (with pious care) Plac'd on his back, he cuts the buxom air, Seeks the Sun's city, and his sacred church. And decently lays down his burden in the porch.
Page 105 - Elevate the pole for the latitude of the place; find the sun's place in the ecliptic, and bring it to the meridian, and set the index...
Page 38 - The horses started with a sudden bound, And flung the reins and chariot to the ground ; The studded harness from their necks they broke, Here fell a wheel, and here a silver spoke, Here were the beam and axle torn away; And, scatter'd o'er the earth, the shining fragments lay.
Page 21 - Then may he cast his Juno off, and lead The great Lycaon's offspring to his bed. But you, ye venerable pow'rs, be kind, And, if my wrongs a due resentment find, Receive not in your waves their setting beams, Nor let the glaring strumpet taint your streams.
Page 211 - ... an instrument so excellent, as " to show things almost a thousand times larger, and above thirty times nearer to the naked eye.
Page 17 - Balance, hung on high, Betwixt the nights and days divides the sky, Then yoke your oxen, sow your winter grain, Till cold December comes with driving rain. Linseed and fruitful poppy bury warm, In a dry season, and prevent the storm. Sow beans and clover in a rotten soil, And millet rising from your annual toil...
Page 211 - Badoverie, at Paris, I applied myself to consider the reason of it, and by what means I might contrive a similar instrument, which I afterwards attained to by the doctrine of refractions.
Page 21 - em through the air In whirlwinds up to heaven, and fix'd 'em there : Where the new constellations nightly rise, And add a lustre to the northern skies. When Juno saw the rival in her height, Spangled with stars, and circled round with light, She sought old Ocean in his deep abodes, And Tethys ; both revered among the gods. They ask what brings her there : " Ne'er ask," says she, " What brings me here, heaven is no place for me.
Page 39 - An infant Phoenix from the former springs, His father's heir, and from his tender wings Shakes off his parent dust ; his method he pursues, And the same lease of life on the same terms renews : When grown to manhood he begins his reign, And with...
Page 18 - Where, in the void of heaven, a space is free, Betwixt the Scorpion and the Maid, for thee ? The Scorpion, ready to receive thy laws, Yields half his region, and contracts his claws.