appear that the correction for the open end or for a large hole in a cylindrical tube increases appreciably with the frequency of the note.' Boehm rightly gave as the remedy for this difficulty a constriction of the bore of the upper portion of the tube (that containing the mouth-hole) so that the bore diminishes gradually from its full dimensions at a quarter of the length from the top end to ni [...] 3. The length of the tube to produce a given note will differ from the half of the corresponding wave length by the sum of the corrections for the mouth-end of the flute and for the open end. [...] The average value of the absolute constant c as deduced from the experiments described above is about 7. From the expressions given above it is a simple matter to calculate the proportion of the energy that appears in the tranmitted light given the size of the particles the thickness of the layer and the dispersive powers of the media or vice versa. [...] The explanation of the variation of the colour of the halo in its different parts becomes evident on examining the spectrum of the light scattered by the powder. [...] (b) A theoretical treatment based on the principles of the wave-theory and the theory of probability has been given and it shows that the intensity of the transmited light is given by the expression I=c A / The influence of the size of the particles and the thicness of the medium on the intensity of the transmitted light has been confirmed experimentally and the value of the absolute cons
- Pages
- 105
- Published in
- India
- SARF Document ID
- sarf.147463
Segment | Pages | Author | Actions |
---|---|---|---|
Frontmatter
|
i-iv | unknown | view |
IX. The Theory of the Flute
|
113-120 | G.T. Walker | view |
X. On Wave-Propagation in Optically Heterogeneous Media and the Phenomena Observed in Christiansen’s Experiment
|
121-142 | Nihal Sethi | view |
XI. On the Production of Musical Sounds from Heated Metals
|
143-154 | B.N. Chuckerbutti | view |
XII. Some New Illustrations of Optical Theory by Ripple Motion
|
155-164 | Rajendra Ghosh | view |
XIII. The Theory of Impact on Elastic Plates
|
165-174 | S. Seshagiri Rao | view |
XIV. On Ripples of Finite Amplitude
|
175-194 | J.C. Rav | view |
XV. The Effects of a Magnetic Field on the General Spectrum
|
195-198 | H.P. Waran | view |
XVI. An Improved Type of Automatic Mercury Pump
|
199-204 | H.P. Waran | view |
Index
|
205-206 | unknown | view |