Philosophia Britannica: Or, A New & Comprehensive System of the Newtonian Philosophy, Astronomy & Geomgraphy: In a Course of Twelve Lectures, with Notes, Containing the Physical, Mechanical, Geometrical, & Experimental Proofs & Illustrations of All the Principal Propositions in Every Branch of Natural Science. Also a Particular Account of the Invention ... of All the Considerable Instruments, Engines, & Machines ...C. Micklewright & Company, 1747 |
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Philosophia Britannica: Or, A New & Comprehensive System of the Newtonian ... Benjamin Martin Vista de fragmentos - 1747 |
Términos y frases comunes
alfo alſo Altitude Angle Angle of Incidence appear Arch Atmoſphere Axis becauſe Body Cafe call'd caufe cauſe Center centripetal Force Circle Colours Comet confequently conftant defcend defcribed Degree Denfity Diameter Diſtance Earth Ecliptic equal Equator exhaufted faid fame fecond feen Feet feveral fhall fhew fhewn fince firft firſt fix'd fmall fome Force form'd fuch fuppofe Glafs Glaſs greater greateſt Heat Hence Image Inches increaſed interfect itſelf Jupiter Latitude Latus Rectum leaft lefs Length Lens meaſured Mercury Miles moft Moon moſt Motion muft muſt Number obferved Object oppofite Orbit Orrery paffing Parabola parallel Particles perpendicular Phænomena Place Planet Plate Pofition Point Preffure Prifm Pulfes Quantity Radius Ratio Rays of Light Reaſon reflected Refraction refrangible reprefented Saturn Semidiameters ſhall Sine Sir Ifaac ſmall Sound Star Sun's Surface Teleſcope thefe theſe thofe thoſe thro Tube uſed Velocity Water Weft Weight whence whofe Wind
Pasajes populares
Página 179 - Light at one degree of obliquity fhould meet with Pores enough in the Air to tranfmit the greater part of it, and at another degree of obliquity mould meet with nothing but parts to reflect it wholly, efpecially confidering that in its paftage out of Air into Glafs...
Página 179 - Boyle] as when it is adjacent to it. Secondly, If Light in its paflage out of Glafs into Air be incident more obliquely than at an Angle of 40 or 4 1 Degrees it is wholly reflected, if lefs obliquely it is in great meafure tranfmitted.
Página 287 - It is to be noted, that the most luminous of the prismatic colours are the yellow and orange. These affect the senses more strongly than all the rest together ; and next to these in strength are the red and green. The blue compared with these is a faint and dark colour, and the indigo and violet are much darker and fainter, so that these compared with the stronger colours are little to be regarded.
Página 180 - Prifm placed at a greater diftance from the former, in fuch -manner that they are all alike incident upon it, the fecond Prifm may be fo inclined to the incident Rays, that thofe which are of a blue Colour fhall be all reflected by it, and yet thofe of a red Colour pretty copioufly tranfmitted. Now if the...
Página 52 - I myself have been one of five who have been together at the bottom in nine or ten fathoms water, for above an hour and a half at a time, without any sort of ill consequence ; and I might have continued there as long as I pleased, for any thing that appeared to the contrary.
Página 181 - ... from polifhed bodies could not be fo regular as they are. For in polifhing glafs with fand, putty, or tripoly, it is not to be imagined that thofe fubftances can, by grating and fretting the glafs, bring all its leaft particles to an accurate polifh, fo that all their furfaces fhall be truly plane or truly fpherical, and look all the fame way, fo as together to
Página 52 - ... their descent ; and to let it out again when they were drawn up full from below. And to a hole in the uppermost part of these barrels, I fixed a leathern trunk or hose well liquored with bees...
Página 182 - Now, if light be reflected, not by impinging on the folid parts of bodies, but by fome other principle, it is probable that as many of its rays as impinge on the folid parts of bodies are not reflected, but ftifled or loft in the bodies.
Página 182 - The Particles when they are shaken off from Bodies by Heat or Fermentation, so soon as they are beyond the reach of the Attraction of the Body, receding from it, and also from one another with great Strength, and keeping at a distance, so as sometimes to take up above a Million of Times more space than they did before in the form of a dense Body.