An Elementary Handbook of PhysicsBlackwood, 1871 - 389 páginas |
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Página 9
... plate becomes thereby excited , possessing a force which before it had not . Small pieces of paper , feathers , threads , are drawn to and adhere to it for a time . Here is evi- dently a force capable of producing motion . This force ...
... plate becomes thereby excited , possessing a force which before it had not . Small pieces of paper , feathers , threads , are drawn to and adhere to it for a time . Here is evi- dently a force capable of producing motion . This force ...
Página 10
... plate ; we see the sparks and the glow , and from this we infer the pre- sence of the force . If I touch the excited conductor , I feel a shock : here I am conscious of the presence of the force by means of my sense of touch : the ...
... plate ; we see the sparks and the glow , and from this we infer the pre- sence of the force . If I touch the excited conductor , I feel a shock : here I am conscious of the presence of the force by means of my sense of touch : the ...
Página 11
William Rossiter. INTRODUCTION . 11 GALVANISM . I put together a plate of zinc c , a rod of carbon a , and some diluted acid ; I get a galvanic current . Here I have at command a force capable of producing heat , light , and sound , of ...
William Rossiter. INTRODUCTION . 11 GALVANISM . I put together a plate of zinc c , a rod of carbon a , and some diluted acid ; I get a galvanic current . Here I have at command a force capable of producing heat , light , and sound , of ...
Página 48
... plates are placed together , air may be blown through the holes , and will pass through both plates . But if the upper plate be made to revolve upon the lower , each hole in the upper plate will pass in succession over every hole in the ...
... plates are placed together , air may be blown through the holes , and will pass through both plates . But if the upper plate be made to revolve upon the lower , each hole in the upper plate will pass in succession over every hole in the ...
Página 50
... plate , and its breadth and thickness are as real as those of a deal board . We stretch a wire and set it in ... plate of metal . A string so shortened and broadened becomes a membrane . It would be dif- ficult to decide where was the ...
... plate , and its breadth and thickness are as real as those of a deal board . We stretch a wire and set it in ... plate of metal . A string so shortened and broadened becomes a membrane . It would be dif- ficult to decide where was the ...
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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.