Opticks: A Treatise of the Reflections, Refractions, Inflections, and Colours of LightLibrary of Alexandria, 28 sept 2020 - 414 páginas By the Rays of Light I understand its least Parts, and those as well Successive in the same Lines, as Contemporary in several Lines. For it is manifest that Light consists of Parts, both Successive and Contemporary; because in the same place you may stop that which comes one moment, and let pass that which comes presently after; and in the same time you may stop it in any one place, and let it pass in any other. For that part of Light which is stopp'd cannot be the same with that which is let pass. The least Light or part of Light, which may be stopp'd alone without the rest of the Light, or propagated alone, or do or suffer any thing alone, which the rest of the Light doth not or suffers not, I call a Ray of Light. Refrangibility of the Rays of Light, is their Disposition to be refracted or turned out of their Way in passing out of one transparent Body or Medium into another. And a greater or less Refrangibility of Rays, is their Disposition to be turned more or less out of their Way in like Incidences on the same Medium. Mathematicians usually consider the Rays of Light to be Lines reaching from the luminous Body to the Body illuminated, and the refraction of those Rays to be the bending or breaking of those lines in their passing out of one Medium into another. And thus may Rays and Refractions be considered, if Light be propagated in an instant. But by an Argument taken from the Æquations of the times of the Eclipses of Jupiter's Satellites, it seems that Light is propagated in time, spending in its passage from the Sun to us about seven Minutes of time: And therefore I have chosen to define Rays and Refractions in such general terms as may agree to Light in both cases. |
Dentro del libro
Resultados 1-5 de 35
... half will be lifted higher by the Refraction than its red half. But if the refracting Angle of the Prism be turned downward, so that the Paper may seem to be carried lower by the Refraction, its blue half will be carried something lower ...
... half DG is carried higher to dg than the red half FE is to fe, and therefore suffers a greater Refraction. If the Edge of the refracting Angle be turned downward, the Image of the Paper will be refracted downward; suppose to δε, and the ...
... half of the Paper appeared distinct, the blue half appeared confused, so that the black Lines drawn upon it could scarce be seen; and on the contrary, where the blue half appeared most distinct, the red half appeared confused, so that ...
... half; and if they were more intense and full, that distance would be greater, as will appear hereafter. These Experiments may suffice for the Colours of Natural Bodies. For in the Colours made by the Refraction of Prisms, this ...
... half distant from the Prism, and at this distance that Breadth, if diminished by the Diameter of the Hole in the Windowshut, that is by a quarter of an Inch, subtended an Angle at the Prism of about half a Degree, which is the Sun's ...
Índice
Sección 16 | |
Sección 17 | |
Sección 18 | |
Sección 19 | |
Sección 20 | |
Sección 21 | |
Sección 22 | |
Sección 23 | |
Sección 13 | |
Sección 14 | |
Sección 15 | |
Sección 24 | |
Sección 25 | |
Sección 26 | |
Sección 27 | |
Sección 28 | |
Sección 29 | |
Sección 30 | |
Otras ediciones - Ver todo
Opticks, Or, A Treatise of the Reflections, Refractions, Inflections ... Isaac Newton Vista previa restringida - 1952 |
Opticks Or a Treatise of the Reflections, Refractions, Inflections & Colours ... Isaac Newton Vista de fragmentos - 1979 |
Opticks: Or, a Treatise of the Reflexions, Refractions, Inflexions and ... Isaac 1642-1727 Newton No hay ninguna vista previa disponible - 2021 |