An Elementary Handbook of PhysicsBlackwood, 1871 - 389 páginas |
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Página 68
... needle of a galvanometer , if it be allowed to pass through it . By connecting a galvanometer to the ends of the thermo - pile , by means of a wire , I may detect the presence of a current , and the amount of deflection will also show ...
... needle of a galvanometer , if it be allowed to pass through it . By connecting a galvanometer to the ends of the thermo - pile , by means of a wire , I may detect the presence of a current , and the amount of deflection will also show ...
Página 137
... needle the wire of an electric circuit , and I find it has become a magnet - i . e . , will tend to set itself north and south , and will at- tract very light iron bodies or another magnet like itself . This also is more easily and ...
... needle the wire of an electric circuit , and I find it has become a magnet - i . e . , will tend to set itself north and south , and will at- tract very light iron bodies or another magnet like itself . This also is more easily and ...
Página 142
... , and that the rapidity or direction of the vibration determines in which it shall be manifested ? Again , the vibrations of an electric NATURE OF ELECTRICITY . 143 current deflect a magnetic needle 142 ELECTRICITY .
... , and that the rapidity or direction of the vibration determines in which it shall be manifested ? Again , the vibrations of an electric NATURE OF ELECTRICITY . 143 current deflect a magnetic needle 142 ELECTRICITY .
Página 143
William Rossiter. NATURE OF ELECTRICITY . 143 current deflect a magnetic needle at right angles to its path , but not an ordinary needle . What is the difference of condition be- tween an ordinary piece of steel and the same when ...
William Rossiter. NATURE OF ELECTRICITY . 143 current deflect a magnetic needle at right angles to its path , but not an ordinary needle . What is the difference of condition be- tween an ordinary piece of steel and the same when ...
Página 153
... needles . It may therefore itself be called a kind of magnetism : and just as a magnet is supposed to become a magnet by having its par- ticles arranged , or polarised , may we suppose that the passage of an electric current is really ...
... needles . It may therefore itself be called a kind of magnetism : and just as a magnet is supposed to become a magnet by having its par- ticles arranged , or polarised , may we suppose that the passage of an electric current is really ...
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absorbed acid action amount of heat angle antimony apparatus arrangement atoms attraction ball battery becomes bismuth body carbon chemical coil colour conducting conductor connection continuous copper current passes decomposed decreases density direction distance earth effect electric current electric force electrified electroscope equal ether excited galvanic galvanometer gases given glass greater hydrogen inches increase latent heat length less Leyden jar light falling light passing liquid magnet magnetised means measure medium mercury metal mirror motion move needle negative nitric acid number of vibrations ordinary oxygen parallel particles passage piece plate platinum polarised pole position prism produce quantity radiation ray of light refraction repulsion result side soft iron solid sound sound-wave spark specific heat spectrum string substance sulphuric acid surface temperature theory thickness tion tricity tube velocity velocity of sound weight whole wire zinc
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Página 54 - ... the angle of reflection is always equal to the angle of incidence, the image for any point can be seen only in the reflected ray prolonged.
Página 391 - A Manual of Palaeontology, for the Use of Students. With a General Introduction on the Principles of Palaeontology.
Página 292 - ... before incidence. Hence the reflected rays, on being produced back, will meet at a point as far behind the reflector as the point of the object is in front of it.