On the Connexion of the Physical Sciences |
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Page 289
When the vacuum was made over a fusible alloy of tin and bismuth , the spark was yellowish and extremely pale . Sir Humphry thence concluded that electrical light principally depends upon some properties belonging to the ponderable ...
When the vacuum was made over a fusible alloy of tin and bismuth , the spark was yellowish and extremely pale . Sir Humphry thence concluded that electrical light principally depends upon some properties belonging to the ponderable ...
Page 302
For example , if a semicircle of bismuth be joined to a semicircle of antimony , an electric current in passing through it produces cold where it passes from the bismuth to the antimony by absorption , and heat where it passes from the ...
For example , if a semicircle of bismuth be joined to a semicircle of antimony , an electric current in passing through it produces cold where it passes from the bismuth to the antimony by absorption , and heat where it passes from the ...
Page 303
The light from zinc , cadmium , tin , bismuth , and lead , in a melted state , gives similar results ; but the number , position , and colour of the lines vary so much in each case , and the appearances are so different , that the ...
The light from zinc , cadmium , tin , bismuth , and lead , in a melted state , gives similar results ; but the number , position , and colour of the lines vary so much in each case , and the appearances are so different , that the ...
Page 332
For example , when a semicircle of bismuth , joined to a semicircle of antimony , so as to form a ring , is heated at one of the junctions by 332 Sect . XXXIII . ARAGO'S EXPERIMENT .
For example , when a semicircle of bismuth , joined to a semicircle of antimony , so as to form a ring , is heated at one of the junctions by 332 Sect . XXXIII . ARAGO'S EXPERIMENT .
Page 333
ring , is heated at one of the junctions by a lamp , a current of electricity flows through the circuit from the antimony to the bismuth ; and such thermo - electric currents produce all the electro - magnetic effects .
ring , is heated at one of the junctions by a lamp , a current of electricity flows through the circuit from the antimony to the bismuth ; and such thermo - electric currents produce all the electro - magnetic effects .
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Contents
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absorbed according action angle appears atmosphere attraction axis becomes bismuth blue bodies cause centre chemical colour comet consequently continually crystal dark depends determined diameter diminishes direction distance disturbing earth ecliptic effect electricity equal equator ether exist experiments extends extreme fall force give glass gravitation greater green heat increase instance intensity John known latitude length less light lines liquid magnetic mass matter mean measured medium metallic miles moon motion move nature nearly NOTE object observed opposite orbit particles passing periodic phenomena plane plate polarized pole position produced proportion proved quantity rays reflected refraction refrangible revolving rings rotation round satellites seen separated shows side similar solar sound space spectrum square stars substances surface temperature theory tion transmitted undulations varies vibrations visible waves whole wire