An Elementary Handbook of PhysicsBlackwood, 1871 - 389 páginas |
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Página 44
... leaves off . From this second string , shortened as before , we can get the notes E F G and A. The third string , a still thinner one , is tuned to produce A when open , and B C D and E when short- ened . The fourth and thinnest string ...
... leaves off . From this second string , shortened as before , we can get the notes E F G and A. The third string , a still thinner one , is tuned to produce A when open , and B C D and E when short- ened . The fourth and thinnest string ...
Página 100
... leaves the surface as much on one side of the perpendicular as its original direction is on the other side . The law of refraction is equally simple in its nature , but not so easily expressed in simple language . But by the aid of a ...
... leaves the surface as much on one side of the perpendicular as its original direction is on the other side . The law of refraction is equally simple in its nature , but not so easily expressed in simple language . But by the aid of a ...
Página 132
... leaf and some pith - balls on a sheet of paper , and hold over them a stick of sealing - wax after rubbing it smartly . The pieces of leaf at once fly to the wax , and remain attached to it ; while the balls will jump to the wax , ad ...
... leaf and some pith - balls on a sheet of paper , and hold over them a stick of sealing - wax after rubbing it smartly . The pieces of leaf at once fly to the wax , and remain attached to it ; while the balls will jump to the wax , ad ...
Página 133
... leaf , and its presence will be evidenced by the diverg- ence of the leaves . T Fig . 70 . Fig . 69 shows one of these " gold - leaf electroscopes , " consisting of an ordinary glass shade on a wooden stand , closed at the top by a ...
... leaf , and its presence will be evidenced by the diverg- ence of the leaves . T Fig . 70 . Fig . 69 shows one of these " gold - leaf electroscopes , " consisting of an ordinary glass shade on a wooden stand , closed at the top by a ...
Página 134
... leaves of the elec- troscope to open , the other will cause them first to close and then again to diverge . Thus , if I apply resinous electricity , the leaves , being both negative , repel each other . If when they are apart I apply an ...
... leaves of the elec- troscope to open , the other will cause them first to close and then again to diverge . Thus , if I apply resinous electricity , the leaves , being both negative , repel each other . If when they are apart I apply an ...
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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.