PhysicsAppleton, 1878 - 149 páginas |
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Página 52
... in a short time a great number of little knocks to the air . When the air is struck , it does not receive the stroke quietly , but strikes the air next it , and 52 [ VIBRATING SCIENCE PRIMERS . Sound explained VIBRATING BODIES.
... in a short time a great number of little knocks to the air . When the air is struck , it does not receive the stroke quietly , but strikes the air next it , and 52 [ VIBRATING SCIENCE PRIMERS . Sound explained VIBRATING BODIES.
Página 53
... strikes the air just deals it one single blow , such as when a cannon is fired , the air carries this one blow to our ear , and we say that we hear a noise . If however the body that strikes the air be in vibration , and deal it a great ...
... strikes the air just deals it one single blow , such as when a cannon is fired , the air carries this one blow to our ear , and we say that we hear a noise . If however the body that strikes the air be in vibration , and deal it a great ...
Página 57
... strike them , but something more will happen after that . The sound when it has struck the cliffs , finding it can get ... strikes . A very curious experiment is that which is shown in the following figure . Place two large hollow BODIES ...
... strike them , but something more will happen after that . The sound when it has struck the cliffs , finding it can get ... strikes . A very curious experiment is that which is shown in the following figure . Place two large hollow BODIES ...
Página 58
... strike against the left - hand reflector , and are reflected from Fig . 22 . it in directions which bring them to the other reflector , from which they are then all reflected into the ear . All this is shown in the figure . This ...
... strike against the left - hand reflector , and are reflected from Fig . 22 . it in directions which bring them to the other reflector , from which they are then all reflected into the ear . All this is shown in the figure . This ...
Página 59
... strikes the air very often in one second , we have a shrill high note : what E D Fig . 23 is called the pitch or tone of the note depends there . fore upon the number of blows which is given to the air in one second . Now we can find ...
... strikes the air very often in one second , we have a shrill high note : what E D Fig . 23 is called the pitch or tone of the note depends there . fore upon the number of blows which is given to the air in one second . Now we can find ...
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acid air-pump attracted BALFOUR STEWART battery blow boiling-point bottom brass bright bulb bulk for bulk buoyancy burning-glass called cannon cold colours conductor convection copper cubic inches cylinder Describe an experiment E. A. FREEMAN earth elec electric machine electroscope excited glass excited sealing-wax expand experiment showing fact feet fill fire force gases Give an instance glass support grains gravity heated body hot body Illustrate your reply iron kinds of electricity knob latent heat lens Leyden jar liquid magnify means mercury metal mirror motion move needle nitric acid particles pass phosphorus piston pith ball plate platinum positive electricity pound weight pressure Price Primer prism ray of light rise rubbed scale-pan Sketch solid sound spark steam stoneware strikes substance sulphuric acid surface temperature thermometer thing told tricity tube valve vapour velocity vessel vibrating body weight wire zinc