...broad knife with its edge parallel to the axis of the fork, and as m near to the fork as conveniently m may be without touching. If the plane of the obstacle...intermediate position, such as C, the sound becomes much stronger. LII. Notes on the Chemical Geology of the Gold-fields of California. By 3. ARTHUR PHILLIPS....

...near to the fork as may be without touching. If the obstacle be so placed that the section of it is A or B no effect is produced; but if it be placed at c, so as to prevent the reciprocating to and fro movement of the air, which tends to abolish the...

...II. 20 306 SOUNDING BOARDS. or, in terms of the ascending series, [341ikr\(kr L'r* TJ -jg^ kr .(21). These expressions are applied by Prof. Stokes to shew...(18) § 341 after introduction of the time factor e(kat by rejecting the imaginary part ; it is in which, as usual, two arbitrary constants may be inserted,...

...exhibited by a very simple experiment. Take a tuning-fork, and holding it in the fingers after it has been made to vibrate, place a sheet of paper or the blade...it be placed in an intermediate position, such as (7, the sound becomes much stronger. i ACCOUNT OF OBSERVATIONS OF THE TOTAL ECLIPSE OF THE SUN.......

...though the motion itself is small. The following experiment may be described in Stokes' own words. " The touching. If the plane of the obstacle coincide with...intermediate position, such as C, the sound becomes much stronger." increase of sound produced by the stoppage of lateral motion may be prettily exhibited by...

...though the motion itself is small. The following experiment may be described in Stokes' own words. " The touching. If the plane of the obstacle coincide with...it be placed in an intermediate position, such as (', the sound becomes much stronger." increase of sound produced by the stoppage of lateral motion...

...A by a very simple experiment. Take a tuning-fork, and holding it in the fingers after it has been made to vibrate, place a sheet of paper or the blade...intermediate position, such as C, the sound becomes much stronger. LII. Azotes on the Chemical Geology of the Gold-fields of California. By 3. ARTHUR PHILLIPS....

...341.] 8YMMETRICAL DIVERGENT WAVE8. 307 made to vibrate, place a sheet of paper, or the blade of a bruad knife, with its edge parallel to the axis of the fork,...intermediate position, such as C, the sound becomes much stronger'." 342. The real expression for the velocity- potential of symmetrical waves diverging in...