An Elementary Handbook of PhysicsBlackwood, 1871 - 389 páginas |
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Página 9
... wires , or other good conductors . If I bring near the conductor , a Leyden jar , this force is communicated to the jar in the form of sparks . If I place a wire in the conductor , or otherwise make a point on its surface , the number ...
... wires , or other good conductors . If I bring near the conductor , a Leyden jar , this force is communicated to the jar in the form of sparks . If I place a wire in the conductor , or otherwise make a point on its surface , the number ...
Página 11
... wires . But the action upon these wires is not ap- preciable by us , except the motion be within the limits of which ... wire through which an electric current is passing . In all these cases there is motion , but we are not con- scious ...
... wires . But the action upon these wires is not ap- preciable by us , except the motion be within the limits of which ... wire through which an electric current is passing . In all these cases there is motion , but we are not con- scious ...
Página 42
... wire . I take an ordinary violin - string , fasten one end to anything and tighten it either by passing the other end round a screw ( as in a violin ) or by fasten- ing a weight to it . The string being thus tightened , I set it in ...
... wire . I take an ordinary violin - string , fasten one end to anything and tighten it either by passing the other end round a screw ( as in a violin ) or by fasten- ing a weight to it . The string being thus tightened , I set it in ...
Página 44
... wire of a more dense substance but of the same thickness ; and we find this to be the case . If we have on a board several wires of equal lengths and thicknesses and stretched by equal weights , but of different densities - say of ...
... wire of a more dense substance but of the same thickness ; and we find this to be the case . If we have on a board several wires of equal lengths and thicknesses and stretched by equal weights , but of different densities - say of ...
Página 45
... wire into three equal parts ? If I sound the longer part , two - thirds of the whole , I get a sound that makes three vibrations while the whole string makes two . The two notes thus produced by strings in the ratio of 2 to 3 are ...
... wire into three equal parts ? If I sound the longer part , two - thirds of the whole , I get a sound that makes three vibrations while the whole string makes two . The two notes thus produced by strings in the ratio of 2 to 3 are ...
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Palavras e frases frequentes
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
Passagens conhecidas
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.