An Elementary Handbook of PhysicsBlackwood, 1871 - 389 páginas |
No interior do livro
Resultados 1-5 de 28
Página 6
... existence of the rays a luminous body is necessary . By a luminous body I mean a body in a state of intense vibration . If this vibration depend upon a force within the vibrating body , then it is self - luminous , as a gas or candle ...
... existence of the rays a luminous body is necessary . By a luminous body I mean a body in a state of intense vibration . If this vibration depend upon a force within the vibrating body , then it is self - luminous , as a gas or candle ...
Página 10
... here my sense of hearing comes into use . But except by means of my senses , I am in no way cognisant of the existence of the force , which is comprehensible by me INTRODUCTION . 11 GALVANISM . I put together a plate 10 INTRODUCTION .
... here my sense of hearing comes into use . But except by means of my senses , I am in no way cognisant of the existence of the force , which is comprehensible by me INTRODUCTION . 11 GALVANISM . I put together a plate 10 INTRODUCTION .
Página 20
... existence . Each shell will be , of course , greater than any one within , and less than any one without it ; and from this it follows that the sound will become feebler and feebler because of the greater amount of air to be set in ...
... existence . Each shell will be , of course , greater than any one within , and less than any one without it ; and from this it follows that the sound will become feebler and feebler because of the greater amount of air to be set in ...
Página 26
... existence of the echo would not be suggested except it chanced that a person was at one focus and heard a sound produced at the other . In the case of persons talking , the speakers might be many times at one focus , and no one at the ...
... existence of the echo would not be suggested except it chanced that a person was at one focus and heard a sound produced at the other . In the case of persons talking , the speakers might be many times at one focus , and no one at the ...
Página 43
... existence of two sounds , cannot distin- guish one from the other . The same result will , of course , be at- tained by either halving one of two equal strings , or by doubling it . So long as we have two strings , one double the length ...
... existence of two sounds , cannot distin- guish one from the other . The same result will , of course , be at- tained by either halving one of two equal strings , or by doubling it . So long as we have two strings , one double the length ...
Outras edições - Ver tudo
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.