Mitä ihmiset sanovat - Kirjoita arvostelu
Yhtään arvostelua ei löytynyt.
Muita painoksia - Näytä kaikki
acting action apparatus appears Application dated arrangement August axis body boiler carried cause centre Charles coal combination communication connected construction containing covered cutting cylinder dated July described direction earth effect employed engineer experiments fabrics fact feet fire fixed fluid force frame France furnace George give given heat Henry Improvements inches invention consists inventor iron James John Joseph Lancaster length less letter London machine machinery magnetic manner manufacture March material matter means Mechanics ments metal method Middlesex mode motion move notice object obtained October Paris pass Patent dated pipe piston placed plate portion position present pressure principle produced propeller provements railway RECENTLY rollers screw shaft ships side similar smoke space SPECIFICATIONS spring steam steel substances suitable supply surface Thomas tion tubes valve vessel weight wheel whole William
Sivu 254 - That gravity should be innate, inherent and essential to matter, so that one body may act upon another at a distance through a vacuum, without the mediation of anything else, by and through which their action and force may be conveyed from one to another, is to me so great an absurdity, that I believe no man who has in philosophical matters a competent faculty of thinking, can ever fall into it.
Sivu 254 - ... a vacuum, without the mediation of anything else, by and through which their action and force may be conveyed from one to another, is to me so great an absurdity, that I believe no man who has in philosophical matters a competent faculty of thinking, can ever fall into it. Gravity must be caused by an agent acting constantly according to certain laws ; but whether this agent be material or immaterial, I have left to the consideration of my readers.
Sivu 256 - Newton generalized the law of attraction into a statement that every particle of matter in the universe attracts every other particle with a force which varies directly as the product of their masses and inversely as the square of the distance between them; and he thence deduced the law of attraction for spherical shells of constant density.
Sivu 152 - ... which is equal to the difference of level between the surface of the water in the...
Sivu 452 - ... which it may be prevented from doing by attaching a piece of wood across the zinc bar, to suspend it from the cover of the battery. The jar is nearly filled with water acidulated with two pounds of sulphuric acid and one ounce of nitric acid, and the battery is ready for use.
Sivu 189 - I find that I am not the same person I was four years ago, when I invented the fire-engine, and foresaw, even before I made a model, almost every circumstance that has since occurred. I was at that time spurred on by the alluring hope of placing myself above want, without being obliged to have much dealing with mankind, to whom I have always been a dupe. The necessary experience in great was wanting ; in acquiring it I have met with many disappointments.
Sivu 124 - Hand, and several other Insurance offices sprung into existence at the close of the 17th, and the beginning of the 18th centuries, each office collected and kept to itself the statistics of its own solitary experience. On the formation of the London Fire-engine...
Sivu 256 - Such, I think, must be the character of the conclusion, if it be supposed that the attraction of the sun upon the earth arises because of the presence of the earth, and the attraction of the earth upon the sun, because of the presence of the sun; there remains the case of the power, or the efficient source of the power, having pre-existed in the sun (or the earth) before the earth (or the sun) was in presence. In the...
Sivu 254 - ... into the nature of the physical means which cause distant bodies to affect each other; and the man who hesitates to admit the sufficiency of the answer, or of the assumption on which it rests, and asks for a more satisfactory account, runs some risk of appearing ridiculous or ignorant before the world of science.
Sivu 7 - Bunsen elements charged with concentrated nitric acid mixed with one-tenth of oil of vitriol. The bath is to be heated to ebullition, and is introduced into a glass with a foot, in which the two electrodes are plunged. The object to be covered is suspended from the positive pole, whilst a plate of brass is attached to the negative pole.