abridgments according action alluded Annales appeared Arts attraction Bibl Biog bodies Book Britannica called cause chap communicated compass conductor constructed containing Cosmos David Brewster Davy described Dict direction discovery distance earth edition effects electricity Encycl English Essay experiments fact fluid force four French galvanic Gilbert given gives glass Hist History Humboldt important inches iron Italy John Journal known Lectures letter light likewise loadstone London magnetic means Memoirs mentioned metals motion nature needle observations original Paris passing Phil Philosophical Physique pile placed plate poles positive produced Prof Professor proved published REFERENCES remarks Researches Royal Society says Sciences spark stone surface telegraph theory Thomas Trans translation treating treatise Univ University variation VIII volume wire writings
Pagina 4 - Canst thou lift up thy voice to the clouds, That abundance of waters may cover thee? Canst thou send lightnings, that they may go, And say unto thee, Here we are?
Pagina 193 - Make a small cross of two light strips of cedar, the arms so long as to reach to the four corners of a large thin silk handkerchief when extended ; tie the corners of the handkerchief to the extremities of the cross, so you have the body of a kite ; which, being properly accommodated with a tail, loop, and string, will rise in the air, like those made of paper; but this being of silk is fitter to bear the wet and wind of a thundergust without tearing.
Pagina 24 - I'd divide, And burn in many places ; on the topmast, The yards and bowsprit, would I flame distinctly, Then meet, and join. Jove's lightnings, the precursors O...
Pagina 194 - To the end of the twine, next the hand, is to be tied a silk ribbon, and where the silk and twine join, a key may be fastened.
Pagina 194 - As soon as any of the thunder clouds come over the kite, the pointed wire will draw the electric fire from them, and the kite, with all the twine, will be electrified, and the loose filaments of the twine will stand out every way and be attracted by an approaching finger.
Pagina 392 - Thermodynamics states that heat cannot of itself pass from a colder to a hotter body...
Pagina 324 - I ever read with attention. It opened to me a new world of thought and enjoyment; invested things before almost unnoticed with the highest interest; fixed my mind on the study of nature, and caused me to resolve at the time of reading it that I would immediately commence to devote my life to the acquisition of knowledge.
Pagina 459 - In a very early stage of electro-magnetic experiments it had been suggested that an instantaneous telegraph might be established by means of conducting wires and compasses. The details of this contrivance are so obvious, and the principle on which it is founded so well understood, that there was only one question which could render the result doubtful ; and this was, — is there any diminution of effect by lengthening the conducting wire?