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Home > Dictionary of Science Quotations > Scientist Names Index N > Sir Isaac Newton Quotes > Heat

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Sir Isaac Newton
(25 Dec 1642 - 20 Mar 1727)

English physicist and mathematician who made seminal discoveries in several areas of science, and was the leading scientist of his era.



Do not Bodies and Light act mutually upon one another; that is to say, Bodies upon Light in emitting, reflecting, refracting and inflecting it, and Light upon Bodies for heating them, and putting their parts into a vibrating motion wherein heat consists?
— Sir Isaac Newton
Opticks (1704), Book 3, Query 5, 133.
Science quotes on:  |  Act (272)  |  Action (328)  |  Body (537)  |  Consist (223)  |  Do (1908)  |  Emission (17)  |  Heat (174)  |  Inflection (3)  |  Light (609)  |  Motion (312)  |  Mutual (53)  |  Reflection (91)  |  Refraction (11)  |  Say (984)  |  Vibration (20)

Do not great Bodies conserve their heat the longest, their parts heating one another, and may not great dense and fix'd Bodies, when heated beyond a certain degree, emit Light so copiously, as by the Emission and Re-action of its Light, and the Reflexions and Refractions of its Rays within its Pores to grow still hotter, till it comes to a certain period of heat, such as is that of the Sun?
— Sir Isaac Newton
Opticks (1704), Book 3, Query II, 135.
Science quotes on:  |  Action (328)  |  Beyond (308)  |  Body (537)  |  Certain (550)  |  Conservation (168)  |  Degree (275)  |  Density (25)  |  Do (1908)  |  Emission (17)  |  Emit (15)  |  Great (1575)  |  Grow (238)  |  Heat (174)  |  Light (609)  |  Period (198)  |  Pore (7)  |  Ray (114)  |  Reaction (104)  |  Reflection (91)  |  Refraction (11)  |  Still (613)  |  Sun (387)

Is not Fire a Body heated so hot as to emit Light copiously? For what else is a red hot Iron than Fire? And what else is a burning Coal than red hot Wood?
— Sir Isaac Newton
Opticks (1704), Book 3, Query 9, 134.
Science quotes on:  |  Body (537)  |  Burn (87)  |  Burning (48)  |  Coal (58)  |  Copious (5)  |  Emission (17)  |  Emit (15)  |  Fire (189)  |  Heat (174)  |  Hot (60)  |  Iron (96)  |  Light (609)  |  Wood (92)

Seeing therefore the variety of Motion which we find in the World is always decreasing, there is a necessity of conserving and recruiting it by active Principles, such as are the cause of Gravity, by which Planets and Comets keep their Motions in their Orbs, and Bodies acquire great Motion in falling; and the cause of Fermentation, by which the Heart and Blood of Animals are kept in perpetual Motion and Heat; the inward Parts of the Earth are constantly warm'd, and in some places grow very hot; Bodies burn and shine, Mountains take fire, the Caverns of the Earth are blown up, and the Sun continues violently hot and lucid, and warms all things by his Light. For we meet with very little Motion in the World, besides what is owing to these active Principles.
— Sir Isaac Newton
From Opticks, (1704, 2nd ed. 1718), Book 3, Query 31, 375.
Science quotes on:  |  Active (76)  |  All (4107)  |  Animal (617)  |  Blood (134)  |  Burn (87)  |  Cause (542)  |  Cavern (9)  |  Comet (61)  |  Conservation (168)  |  Continue (165)  |  Earth (998)  |  Fall (230)  |  Fermentation (15)  |  Find (999)  |  Fire (189)  |  Gravity (133)  |  Great (1575)  |  Grow (238)  |  Heart (230)  |  Heat (174)  |  Hot (60)  |  Inward (6)  |  Light (609)  |  Little (708)  |  Lucid (9)  |  Motion (312)  |  Mountain (187)  |  Necessity (191)  |  Orb (20)  |  Orbit (82)  |  Owing (39)  |  Perpetual (57)  |  Perpetual Motion (14)  |  Planet (357)  |  Principle (510)  |  Seeing (142)  |  Sun (387)  |  Thing (1915)  |  Variety (133)  |  Volcano (39)  |  Warm (69)  |  World (1778)

Why there is one Body in or System qualified to give Light and Heat to all ye rest, I know no reason, but because ye author of the Systeme thought it convenient.
— Sir Isaac Newton
Letter to Bentley (10 Dec 1692). In The Works of Richard Bentley (1838), Vol. 3, 204.
Science quotes on:  |  All (4107)  |  Author (168)  |  Body (537)  |  Convenience (50)  |  Heat (174)  |  Know (1519)  |  Light (609)  |  Qualified (12)  |  Reason (744)  |  Rest (281)  |  Science And Religion (310)  |  Solar System (78)  |  Sun (387)  |  System (537)  |  Thought (954)  |  Why (491)


See also:
  • 25 Dec - short biography, births, deaths and events on date of Newton's birth.
  • Isaac Newton - biography from Famous Men of Science (1889)
  • Isaac Newton - Comments on his “Playing on the Seashore” Quote
  • Isaac Newton - “Playing on the Seashore” illustrated quote - Medium 500px.
  • Isaac Newton - “Playing on the Seashore” illustrated quote - Large 800px.
  • Isaac Newton - context of quote “A change in motion” - Medium image (500 x 250 px)
  • Isaac Newton - context of quote “A change in motion” - Large image (800 x 400 px)
  • Isaac Newton - context of quote “In experimental philosophy” - Medium image (500 x 250 px)
  • Isaac Newton - context of quote “In experimental philosophy” - Large image (800 x 400 px)
  • Isaac Newton - context of quote “Standing on the shoulders of giants” - Medium image (500 x 250 px)
  • Isaac Newton - context of quote “Standing on the shoulders of giants” - Large image (800 x 400 px)
  • Isaac Newton - context of quote “Impressed force is the action” - Medium image (500 x 250 px)
  • Isaac Newton - context of quote “Impressed force is the action” - Large image (800 x 400 px)
  • Isaac Newton - context of quote “Inherent force of matter is the power of resisting…” - Medium image (500 x 250 px)
  • Isaac Newton - context of quote “Inherent force of matter is the power of resisting…” - Large image (800 x 400 px)
  • Isaac Newton - context of quote “Plato is my friend” - Medium image (500 x 250 px)
  • Isaac Newton - context of quote “Plato is my friend” - Large image (800 x 400 px)
  • Isaac Newton - context of quote “Colours which appear through the Prism ” - Medium image (500 x 250 px)
  • Isaac Newton - context of quote “Colours which appear through the Prism ” - Large image (800 x 400 px)
  • Isaac Newton - context of quote “Nature does nothing in vain” - Medium image (500 x 250 px)
  • Isaac Newton - context of quote “Nature does nothing in vain” - Large image (800 x 400 px)
  • Isaac Newton - context of quote “No more causes of natural things should be admitted” - Medium image (500 x 250 px)
  • Isaac Newton - context of quote “No more causes of natural things should be admitted” - Large image (800 x 400 px)
  • Isaac Newton - context of quote “Truth is ever to be found in simplicity” - Medium image (500 x 250 px)
  • Isaac Newton - context of quote “Truth is ever to be found in simplicity” - Large image (800 x 400 px)
  • Isaac Newton - context of quote “Every body perseveres in its state of being at rest” - Medium image (500 x 250 px)
  • Isaac Newton - context of quote “Every body perseveres in its state of being at rest” - Large image (800 x 400 px)
  • Isaac Newton - context of quote “God, in the beginning, formed matter” - Medium image (500 x 250 px)
  • Isaac Newton - context of quote “God, in the beginning, formed matter” - Large image (800 x 400 px)
  • Isaac Newton - context of quote “The cause of gravity is what I do not pretend to know” - Medium image (500 x 250 px)
  • Isaac Newton - context of quote “The cause of gravity is what I do not pretend to know” - Large image (800 x 400 px)
  • Sir Isaac Newton’s Apple-Tree - debunking the myth, from Historic Ninepins: A Book of Curiosities by John Timbs (1869)
  • Newton and the Dog - debunking the myth about Newton’s dog Diamond.
  • Booklist for Isaac Newton.

Carl Sagan Thumbnail In science it often happens that scientists say, 'You know that's a really good argument; my position is mistaken,' and then they would actually change their minds and you never hear that old view from them again. They really do it. It doesn't happen as often as it should, because scientists are human and change is sometimes painful. But it happens every day. I cannot recall the last time something like that happened in politics or religion. (1987) -- Carl Sagan
Quotations by:Albert EinsteinIsaac NewtonLord KelvinCharles DarwinSrinivasa RamanujanCarl SaganFlorence NightingaleThomas EdisonAristotleMarie CurieBenjamin FranklinWinston ChurchillGalileo GalileiSigmund FreudRobert BunsenLouis PasteurTheodore RooseveltAbraham LincolnRonald ReaganLeonardo DaVinciMichio KakuKarl PopperJohann GoetheRobert OppenheimerCharles Kettering  ... (more people)

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