Cosa dicono le persone - Scrivi una recensione
Nessuna recensione trovata nei soliti posti.
Altre edizioni - Visualizza tutto
The Mechanic's Magazine, Museum, Register, Journal and Gazette, Volume 30
Visualizzazione completa - 1839
The Mechanic's Magazine, Museum, Register, Journal and Gazette, Volume 45
Visualizzazione completa - 1846
The Mechanic's Magazine, Museum, Register, Journal and Gazette, Volume 43
Visualizzazione completa - 1845
acid angles apparatus applied April April 15 atmosphere atmospheric railway boiler Braidwood carbon carbonic acid centre of gravity construction crank cylinder described diameter Dublin effect electric employed engine equal equation experiments February 20 feet fire flues Folkstone force friction frustrum fuel furnace Galignani glass heat hour hydrogen improvements invention iron James January January 21 length lever locomotive London machine machinery manganese manufacture March March 13 means mechanical ment mercury Messrs metal Middlesex miles minute mode motion º º obtained Ondine opinion paper passes patent pipes piston plane plate present pressure principle produced propeller purpose quantity railway Rattler revolving rollers screw screw propeller shaft side six months solidity speed steam steam-engines steamer stroke sufficient supply surface tain temperature tion tons tube valve vapour velocity ventilation vessel weight wheel wood
Pagina 109 - they were in large flocks containing both species in the proportion of two of the former to one of the latter " (the present)
Pagina 83 - ... a way to make my vessels so that they are strengthened by the force within them, and the one to fill after the other, I have seen the water run like a constant...
Pagina 84 - An admirable and most forcible way to drive up water by fire, not by drawing or sucking it upwards, for that must be as the philosopher calleth it, infra spheeram activitatis, which is but at such a distance. But this way hath no bounder, if the vessels be strong enough ; for I have taken a piece of a whole cannon, whereof the end was burst, and filled it three...
Pagina 62 - A Treatise on the Forces which produce the Organization of Plants. With an Appendix, containing several Memoirs on Capillary Attraction, Electricity, and the Chemical Action of Light.
Pagina 254 - It is far from my wish to promulgate to the world that the ridiculous expectations, or rather professions, of the enthusiastic speculatist, will be realised, and that we shall see engines travelling at the rate of twelve, sixteen, eighteen, twenty miles an hour. Nothing could do 'more harm towards their general adoption and improvement than the promulgation of such nonsense...
Pagina 254 - It was not an easy task for me to keep the engine down to ten miles an hour, but it must be done, and I did my best.
Pagina 226 - Walton do hereby describe the manner in which my said invention is to be performed, by the following statement thereof, reference being had to the drawing annexed, and to the figures and letters marked thereon...
Pagina 83 - ... but unanimously, and with harmony agreeing they all augment and contribute strength unto the intended work and operation: And therefore I call this A Semi-omnipotent Engine, and do intend that a Model thereof be buried with me.
Pagina 255 - It is possible that roads paved with iron may hereafter be employed for the purpose of expeditious travelling, since there is scarcely any resistance to be overcome except that of the air; and such roads will allow the velocity to be increased almost without limit.